MCM-22 Zeolite Research Articles

Boron doped Mo/HMCM-22 catalyst for improving coke resistance in methane dehydroaromatization

Mo/HMCM-22 is one of the candidate catalysts for methane dehydroaromatization (MDA) reaction. However, serious coke deposition would deactivate the catalyst, resulting in a rapid decrease of aromatics yield. Here, we adjusted the acidity of MCM-22 zeolite by doping boron into the framework. Boron species replace some of framework aluminum and prompt aluminum to locate in sinusoidal channel. It optimizes the ratio of strong/weak Brønsted acid, as well as enhances the interaction between molybdenum and HMCM-22 to facilitate the dispersion of molybdenum species. After 10 h of MDA reaction, the yield of aromatics over Mo/H[B]MCM-22 (SBR 30) is 3.5 times higher than that of Mo/H[B]MCM-22 (SBR 5). It decreases by only 4.8 % in comparison to the initial yield. Meanwhile, Mo/H[B]MCM-22 (SBR 30) shows significantly better resistance to coke deposition. Therefore, the established structure–activity relationships provide valuable insights for future research on the modification of zeolite acidity in methane dehydroaromatization reaction.

Adsorption performance of 1,4-dioxane by MCM-22 and Beta zeolites and their bio-zeolite composite system in the presence of co-contaminants

Addressing the significant challenge of efficiently separating 1,4-dioxane from aquatic environments using traditional adsorbents is crucial. In this study, we evaluated the adsorption performance of MCM-22 and Beta zeolites. Both were identified as highly effective adsorbents. Equilibrium adsorption of 1,4-dioxane was achieved within 20 min for an initial concentration of 500 mg L-1 on both MCM-22 and Beta zeolites. At 288 K, the maximum adsorption capacities fitted by Langmuir isotherm were 79.66 mg g−1 for MCM-22 and 121.66 mg g−1 for Beta zeolite. Fixed-bed column studies demonstrated that the Yan model properly predicted the behavior of both zeolites under varying flow rates. Additionally, MCM-22 exhibited a wider pore size distribution compared to Beta zeolite, while Beta zeolite demonstrated a higher volume of ultra-micropores (<1 nm) than MCM-22. This highlights the importance of pore volume filling in facilitating excellent adsorption of 1,4-dioxane by both zeolites. Further analysis via FTIR and 1H NMR confirmed the significance of Brønsted acid sites in 1,4-dioxane adsorption. The adsorption performance of both zeolites remained unaffected by initial pH values ranging from 2 to 11, as well as variations in ionic strength or the presence of natural organic matter (NOM) for both zeolites. However, the co-existence of 1,1-dichloroethene (1,1-DCE) resulted in competitive adsorption with 1,4-dioxane, leading to a notable decrease in adsorption capacity of 1,4-dioxane. In contrast, the presence of metal ions Cu2+ and Ag+ did not compete for adsorption sites with 1,4-dioxane. Our study demonstrated the effectiveness of the bio-zeolite system in regenerating spent adsorbents, surpassing water and solvent regeneration methods in efficiency and recyclability. Although addressing the persistence of 1,1-DCE remains a challenge, bio-zeolites emerge as versatile tools for mitigating the bio-inhibition of heavy metals, such as Cu2+ and Ag+, while offering a sustainable solution for 1,4-dioxane bioremediation.

Synthesis of Granular MCM-22 Zeolite with a Hierarchical Porous Structure

Synthesis of Granular MCM-22 Zeolite with a Hierarchical Porous Structure

Mesoporous Co@MCM-41 catalyst for stable ethane dehydrogenation

Catalytic dehydrogenation of low-cost C2-C4 alkanes can be an alternative route to produce value-added olefins. To overcome the drawback of a microporous Co-based Co@MFI zeolite catalyst that is sensitive to coke deposition for its deactivation, herein, a mesoporous Co-incorporated MCM-41 catalyst was synthesized by hydrothermal synthesis successfully and tested for ethane dehydrogenation. Various characterizations suggested that Co species were also dispersed in an atomical level in the MCM-41 zeolite with a reduction-resistant –Coδ+–Oδ-– structure, which, therefore, ensures its high selectivity to ethylene (∼100 %). Thanks to the mesoporous characteristic of the MCM-41, the as-synthesized Co@MCM-41 catalyst showed excellent stability than the widely reported microporous Co@MFI catalysts, which can be attributed to the reason that the mesoporous channels are not sensitive to coke deposition and still allow reactant and products to diffuse in and out easily, This work demonstrates the importance of the diffusion of a zeolite-based catalyst and promotes the application of Co-based catalyst for alkane dehydrogenation.

Physical Grinding of Prefabricated Co3O4 and MCM-22 Zeolite for Fischer-Tropsch Synthesis: Impact of Pretreatment Procedure on the Dispersion and Catalytic Performance.

To improve the mess-specific activity of Co supported on zeolite catalysts in Fischer-Tropsch (FT) synthesis, the Co-MCM-22 catalyst was prepared by simply grinding the MCM-22 with nanosized Co3O4 prefabricated by the thermal decomposition of the Co(II)-glycine complex. It is found that this novel strategy is effective for improving the mess-specific activity of Co catalysts in FT synthesis compared to the impregnation method. Moreover, the ion exchange and calcination sequence of MCM-22 has a significant influence on the dispersion, particle size distribution, and reduction degree of Co. The Co-MCM-22 prepared by the physical grinding of prefabricated Co3O4 and H+-type MCM-22 without a further calcination process exhibits a moderate interaction between Co3O4 and MCM-22, which results in the higher reduction degree, higher dispersion, and higher mess-specific activity of Co. Thus, the newly developed method is more controllable and promising for the synthesis of metal-supported catalysts.

Construction of highly active layered zeolite MCM-22 loading Pt catalyst for toluene deep oxidation

Toluene, as a typical Volatile organic compound (VOC), is challenging to degrade at low temperatures due to its highly stable benzene ring. Herein, a novel layered zeolite MCM-22 loaded Pt (Pt@MCM-22) catalyst with excellent degradation performance for toluene was synthesized by one-pot method. The 0.5 %Pt@MCM-22 achieved 90 % toluene conversion at 159 °C (T90 = 159 °C), and the apparent activation energy value was only 77.2 kJ·mol−1 (Ea = 77.2 kJ·mol−1). The catalyst demonstrated outstanding long-term and cyclic stability. Moreover, high activity was maintained even after high-temperature treatment and in humid environments. In addition, the 0.5 %Pt@MCM-22 catalyst was rich in adsorbed oxygen (Oads) and possessed excellent oxygen mobility. The enrichment of Pt0 species provided a suitable active site for toluene oxidation. The catalytic oxidation of toluene was confirmed to follow the Mars-van Krevelen (MvK) mechanism by in situ diffuse reflectance infrared Fourier transform spectroscopy (in situ DRIFTS) measurements, and density functional theory (DFT) calculation implied that the hydroxyl groups on the catalyst can provide active oxygen for toluene oxidation. This work represents an innovative and efficient approach for the design and fabrication of highly active catalysts for toluene removal, providing a catalyst with excellent catalytic performance.

Microwave synthesis of amino-functionalized MCM-41 from coal gasification fine slag for efficient bidirectional adsorption of anionic and cationic dyes

Coal based solid waste has been recognized as a sustainable raw material for the preparation of high added value materials for wastewater treatment. In this paper, a preparation route was designed for the rapid, efficient, and low-cost preparation of MCM-41 zeolite using coal gasification fine slag as raw material. Functionalization modification of MCM-41 was carried out by grafting amino groups on its surface to improve its application performance. Moreover, the prepared functionalized material is used for bidirectional adsorption of anionic and cationic dyes. The experimental results indicate that MCM-41 zeolite with highly ordered pore structure was rapidly prepared using the advantages of fast heating and strong permeability of microwave synthesis method, with a specific surface area of up to 862.03 m2/g. Amine functionalized MCM-41 exhibits strong adsorption capacity for both cationic and anionic dyes, with maximum adsorption capacities for methylene blue and Congo red being 292.40 mg/g and 354.61 mg/g, respectively. The study of adsorption kinetics and adsorption mechanism indicate that the adsorption process is mainly controlled through chemical adsorption, including electrostatic attraction, hydrogen bonding, and π-π interactions. The results of this study will provide useful references for the use of coal based solid waste to prepare functional materials for the treatment of organic wastewater.

Recent modifications of MCM-22 and MOR zeolite in MTO reaction: A review

Since the discovery of the Methanol-to-Olefins (MTO) process as a sustainable and nonpetroleum method for generating light olefins, there has been a growing interest in the utilization of acidic zeolite catalysts. In this review, we highlighted the application and modification of MCM-22 and MOR zeolite catalysts, shedding light on their distinctive properties and the ongoing endeavors to optimize their catalytic performance. Notably, the choice of catalyst and specific modifications significantly influence the outcomes of light olefin selectivity, propylene-to-ethylene (P/E) ratios, and catalytic lifetime. This research offers insights into the current status of research on MCM-22 and MOR zeolites and imparts a valuable understanding of the developments of both catalysts in this crucial catalytic field.

Attapulgite-based MCM-41 zeolite supported Ni-Nb catalysts for hydrogen production by acetic acid steam reforming

Acetic acid steam reforming (AASR) was generally considered as one of the promising technologies for hydrogen production. In this work, the L-lysine-assisted attapulgite-based MCM-41 zeolite (LAMZ) was successfully synthesized by using attapulgite-derived silicon source and the LAMZ-supported Ni-Nb (xNi-yNb/LAMZ) catalysts were prepared via conventional impregnation method. The effects of LAMZ and Nb content on regulating the microstructures and properties of Ni-based catalysts were investigated by various characterizations. Results revealed that the addition of L-lysine could contribute to forming more void structures and increasing specific surface area of LAMZ support, which was beneficial for promoting the dispersion of active sites and enhancing the metal-support interaction. Additionally, Nb optimized the reduction of Ni, increased the concentration of surface-active Ni species, improved the strength of surface Lewis acid and promoted the formation of Ni-NbOx interfaces. Amongst, 5Ni-1Nb/LAMZ exhibited the highest surface Ni0 sites and Ni-NbOx interfaces, which further induces the generation of VO generation and the flow of lattice oxygen. Therefore, the 5Ni-1Nb/LAMZ catalyst presented the highest acetic acid conversion (82.1 %) and hydrogen yield (69.9 %) at reaction conditions of reaction temperature = 750 °C, S/C = 3, WHSV = 19.96 h−1, furthermore, it almost no any inactivation during 55 h of AASR. Additionally, the characterization results of spent catalysts confirmed that 5Ni-Nb/LAMZ possess high coke resistance and anti-sinter capability.

Conversion of methanol and ethanol into hydrocarbons over zeolites with different pore structure and acid properties

Methanol and ethanol are converted into hydrocarbons over zeolites with different pore structures and acid properties. It is an alternative technology for generating petrochemical feedstocks, particularly ethene and propene. Thus, the search for catalysts with physicochemical properties that maximize activity and selectivity to products of interest in the reaction has increased. In this study, ZSM-5 and MCM-22 zeolites in their acid form (HZSM-5 and HMCM-22), as well as ITQ-2, the delaminated form of MCM-22, were investigated as catalysts for methanol (MeOH) and ethanol (EtOH) conversion. All samples were characterized by X-ray diffractometry (XRD), X-ray fluorescence spectrometry (XRF), 27Al magic angle spinning nuclear magnetic resonance spectrometry (27Al MAS/NMR), N2 physisorption and temperature programmed desorption of ammonia (TPD of NH3). A comparison of the catalytic performance at 500 °C and atmospheric pressure showed that the product distribution and catalyst stability were significantly influenced by the studied alcohol, suggesting that these results reflected the differences in the mechanism for the formation of hydrocarbons.

Cerium Containing Siliceous MCM-22: Preparation, Characterization and its Potential Application towards Oxidation of Isoeugenol to Vanillin

Aim: Preparation of cerium containing silicious MCM-22 zeolite material and explore its application for biomass conversion. Background: Zeolites and zeolite like microporous materials are well known as potential heterogeneous acid catalysts, whose discovery has made a significant impact in the petroleum, petrochemical and fine chemical industries. In recent years, zeolite, zeolites like molecular sieves, and inorganic oxide-based heterogeneous catalysts played a significant role in biomass valorization to receive value-added chemicals. Thus we focused on utilization of zeolite for biomass transformation. Objective: Preparation of cerium containing aluminium-free siliceous MCM-22 (AF-CeMCM- 22) by the in-situ hydrothermal method and explore its importance on biomass transformation. Methods: Powder XRD, FTIR and BET surface area were used to study the microstructure of the samples. SEM and FE-SEM were used to study morphology, TGA was used to evaluate the thermal stability, and 29Si NMR and DR-UV-Vis were used to study the environment of the MCM-22 framework. The prepared and confirmed material was used for the oxidation of levulinic acid over the liquid phase setup. Gas chromatography was used to evaluate the catalytic study, such as conversion and selectivity; also, GCMS was used for the confirmation of products. Results: The powder XRD pattern showed well distinguish MCM-22 framework structure with a uniform dispersion of cerium ions in the MCM-22 framework. SEM image of the cerium AFCeMCM- 22 showed platelet structure having flaky spherical morphology and the surface area in the range of about 175 m2g−1. 29Si NMR and DR-UV-Vis studies confirmed the well-condensed nature of the MCM-22 silica framework and the cerium ions present in both tetrahedral and octahedral extra-framework environments. Conclusion: The catalyst developed in the present studies was found to be a promising catalyst for the conversion of iso-eugenol to vanillin at 60°C, using H2O2 oxidant with the vanillin selectivity of 71 %.

Liquid film coated porous sorbents to trap gaseous acetaldehyde

Acetaldehyde has been assigned as Group 2B carcinogen and it accounts for 70 % in aldehydes chemicals in the mainstream smoke that caused a serious environment pollution. To fabricate new effective capturer of acetaldehyde through physical rather than chemical modification, zeolites and other porous sorbents were assessed at first in the gaseous adsorption of acetaldehyde to select suitable carriers. Then MCM-22 zeolite, SBA-15 and activated carbon (AC), representing the sorbent with ordered microporous, mesoporous and gross porosity, were chosen for liquid film modification with glycerol to improve their adsorption capability through extending the contact between sorbent and adsorbate. MCM-22 among zeolites showed the best adsorptive quantity of acetaldehyde (1.3 mmol g−1), close to that of AC (1.4 mmol g−1) in gaseous phase, and the value increased about 60 % after the liquid film modification meanwhile a negative impact appeared on modified AC with the removal quantity of 1.0 mmol g−1. Similarly, the liquid film on the mesoporous sorbent SBA-15 made the adsorption capacity enhanced by 66 % (0.5 mmol g−1) than parent SBA-15 (0.3 mmol g−1), though this value is still inferior to that of AC and zeolite. Liquid film modified is proven to be efficient for zeolite to trap gaseous acetaldehyde, which offers an economic and eco-friendly strategy to control air pollution. Finally, these sorbents were tried to adsorb the acetaldehyde in cigarette smoke and among them SBA-15 showed a better performance than MCM-22 and AC, demonstrating the superior of mesopores in the face of hundreds of harmful substances.

Preparation and application of lanthanum-cobalt bimetallic modified composite ZSM-5/MCM-41 zeolite: Enhancing the stability of aromatic compounds produced by lignin cracking in catalytic pyrolysis of pine sawdust

Bimetallic modified (lanthanum and cobalt) micro-mesoporous composite ZSM-5/MCM-41 zeolite was prepared by recrystallization and impregnation to improve the aromatic compound yield during in-situ catalytic pyrolysis of pine sawdust. Monometallic modified catalysts were prepared for comparison. Catalytic pyrolysis was conducted in a fixed bed reactor at 550 °C for 15 min. The structure-function relationship of the catalysts was studied based on SEM, TEM, BET, XRD, XPS, H2-TPR, NH3-TPD, and Py-IR. The results showed that under the premise of ensuring the bio-oil yield, the catalyst simultaneously doped with lanthanum (16 wt%, La2O3) and cobalt (4 wt%, Co3O4) had the highest aromatic compound yield (79.92%), which was 23.79% higher than that of non-catalytic pyrolysis. In addition, the adjustment of pore structure and acid sites caused by modification and the interaction between doped metal atoms enhanced the aromatic compound stability during pyrolysis, thus leading to a high yield of phenols from lignin cracking.

Selective Cleavage of Methylene Linkage in Kraft Lignin over Commercial Zeolite in Isopropanol.

Lignin is an aromatic polymer that constitutes over 30 wt% of lignocellulosic biomass and is the most important source of renewable aromatics in nature. The global paper industry generates more than 70 million tons of Kraft lignin annually. Depolymerization of Kraft lignin to value-added monomers can significantly enhance the profitability of biorefinery. However, the method is impeded by the severe condensation of Kraft lignin during the pulping process, which forms robust C-C bonds and results in low monomer yields. In this study, we present a stepwise approach for producing valuable aromatic monomers from Kraft lignin through the cleavage of both C-O and C-C bonds. The approach initiated with complete cleavage of C-O bonds between lignin units within Kraft lignin through alcoholysis in isopropanol, resulting in a monomer yield of 8.9 %. Subsequently, the selective cleavage of methylene linkages present in the residual dimers and oligomers was achieved with commercial MCM-41 zeolite in the same pot, proceeding with an additional monomer yield of 4.0 %, thereby increasing the total monomer yield by 45 %. This work provides an avenue for increasing the depolymerization efficiency of Kraft lignin.

Ti3C2Tx MXene wrapped, carbon-coated porous Si sheets for improved lithium storage performance

Si-based materials have shown great potential as lithium-ion batteries (LIBs) anodes due to their natural reserves and high theoretical capacity. However, the large volume changes during cycles and poor conductivity of Si lead to rapid capacity decay and poor cycling stability, ultimately limiting their commercial applications. Herein, we have skillfully utilized the microporous MCM-22 zeolite as the unique silicon source to produce porous Si (pSi) sheets by a simple magnesiothermic reduction, followed by a carbon coating and further Ti3C2Tx MXene assembly, obtaining the ternary pSi@NC@TNSs composite. In the design, porous Si sheets provide more active sites and shorten Li-ion transport paths for electrochemical reactions. The N-doped carbon (NC) layer serves as a bonding layer to couple pSi and Ti3C2Tx. The conductive network formed by 2D Ti3C2Tx and medium NC layer effectively enhances the overall charge transport of the electrode material, and helps to stabilize the electrode structure. Therefore, the as-made pSi@NC@TNSs anode delivers an improved lithium storage performance, exhibiting a high reversible capacity of 925 mAh/g at 0.5 A/g after 100 cycles. This present strategy provides an effective way towards high-performance Si-based anodes for LIBs.

Catalytic conversion of n-Dodecane to lower olefins hydrogen carriers over bran-shaped modified MCM-22 zeolite catalyst: SiO2/Al2O3 ratio effects

The demand-supply gap for light olefins and aromatics has been enormous in recent years. This imbalance is anticipated to grow exponentially due to their extensive use in manufacturing plastics, textiles, pharmacological intermediates, climate-neutral synthetic fuels, and hydrogen carriers. Production of light olefins through the catalytic cracking of naphtha is widely regarded as one of the most prestigious methods. Despite this, selecting an effective and efficient catalyst is one of the most challenging aspects of the scaling-up process. In this study, a highly active, modified MCM-22 catalyst has been synthesized by a hydrothermal method. Various techniques are used for the characterization of catalysts, including scanning electron microscopy (SEM), X-ray diffraction (XRD), N2 adsorption-desorption, temperature-programmed desorption of ammonia (NH3-TPD), and solid-state nuclear magnetic resonance experiments (NMR) with Al and Si. The cracking of n-dodecane to lower olefins was performed, and it was found that the conversion rates were highly correlated with the SiO2/Al2O3 ratio of the MCM-22 samples. Sample Si0.5 (SiO2/Al2O3 ∼ 28.9) showed a typical photograph of the MWW phase with a bran or flake shape in a stacking mode. The Si0.5 sample has a superior external surface area than other samples (up to ca. 130 m2/g) caused by a smaller particle with an average crystal size of around 15 nm, resulting in maximum catalytic performance towards light olefins. It was discovered that Si0.5 had a diminishing tendency in the paraffinic selectivity but had a robust selectivity for olefins (propylene and butylene in particular). This research may provide academics and the industry with new prospects for improving the catalytic cracking of n-dodecane into light olefins.

Combination of natural silica and alumina sources for synthesis of MCM-22 zeolite

Zeolite has become a promising material that can potentially play a pivotal role in resolving environmental crises. Among zeolite families, MCM-22 zeolite shows outstanding intrinsic properties associated with the topology and porous structure, offering ion-exchange advantages for catalytic activity processes. The synthesis of MCM-22 zeolite becomes challenging when concerning the cost and catalytic performance. To overcome this bottleneck, we demonstrate a sustainable route of a hydrothermal process using natural resources as starting materials. Rice husk from agricultural waste was used as a silica source while natural clays (kaolin and bentonite) were applied as alumina sources. The products from natural sources were compared with the use of commercial starting materials, e.g., NaAlO2 (for alumina) and Na2SiO3 and TEOS (for silica), in points of crystal, compositional, and morphological views. We showed that the high purity of MCM-22 zeolite can be obtained from rice husk silica (RHS) and aluminosilicate gel (ASG) extracted from kaolin, while the use of ASG extracted from bentonite tended to be unsuitable to generate the zeolite formation. We also studied the effects of reaction time and the ratio of RHS/ASG on the crystallinity and surface area of MCM-22. The architecture and acidity of an optimal product were explored by Nuclear magnetic resonance spectroscopy and Temperature-programmed desorption of ammonia, demonstrating the success of achieving well acidity.

Conversion of low-density polyethylene into monocyclic aromatic hydrocarbons through continuous microwave pyrolysis with ex-situ dual-catalyst beds

The single-use of polyolefins-based individual protective equipment has led to the rapid generation of substantial plastic waste. This study aimed at cleaner disposal of the polyolefin waste, and carried out the continuous microwave pyrolysis (CMP) of low-density polyethylene (LDPE) over dual-catalyst beds of MCM-41 and HY. The dual-catalyzed trial was able to produce more condensate fractions with higher selectivity of monocyclic aromatic hydrocarbons (MAHs), compared with using only MCM-41 or HY zeolite. It was because the larger pore size of the MCM-41 catalyst (4.00 nm) could crack long-chain polyolefin intermediates into shorter chains. This alleviates steric and diffusional resistance while entering and exiting the micropores of the HY zeolite (0.74 × 0.74 nm). The maximum liquid yield (63.75 wt%) and MAHs selectivity (78.21%) were achieved at a catalysis temperature of 450 °C, feedstock to catalyst ratio of 8:3, and HY to MCM-41 ratio of 2:1. In addition, the performance of the CMP reactor was also compared favorably with the batch microwave pyrolysis (BMP) reactor under the same conditions. It has been found that the CMP reactor generated more MAHs products, whereas the BMP reactor was more selective for the generation of polycyclic aromatic hydrocarbons (PAHs) and gas products. The combination of CMP and the co-catalysis process offers new insight into sustainable management and value-added recovery of medical plastic waste.

A mechanistic study on the CO2 activation over Pd-containing MCM-22 zeolite based on DRIFT analysis: Impact of counter cations in the zeolite framework

Zeolites have been playing an important role in the field of so-called “Carbon dioxide Capture, Utilization, and Storage (CCUS)”. Catalytic activation of CO2 over zeolite-based catalysts has been extensively investigated, while many issues remain unsolved. In this study, the MWW-type zeolites impregnated with the Pd nanoparticles were used as the catalysts for CO2 activation. Furthermore, various amounts of charge balance cations (Na+ and H+) were added to the Pd-MWW with the intention of improving CO2 adsorption capacity. A fixed-bed reactor equipped with the Mass Spectrometer for effluent gas analysis was used to evaluate the steady-state conversion of the CO2 activation on these as-prepared catalysts from 50 to 650 °C. The compositions of the effluent gases and their associated quantities were monitored for each test. Finally, two infrared techniques (steady-state and dynamic measurements) were applied to identify the spectroscopic evidence of the heterogeneous catalysis reaction. In the first technique, the amount of chemisorbed CO2 was quantified by the infrared transmitted intensity across the samples from the vacuum to various levels of CO2 pressure at ambient temperature. The second technique investigates the hydrogenation mechanisms of adsorbates by the time-resolved FTIR with an in-situ diffusive reflectance airtight chamber. Both methods facilitated the infrared spectra of surface-adsorbed species during the hydrogenation. In combination with the temperature-programmed CO2 activation tests, this research prompted to reveal the kinetic mechanisms of CO2 activation.

MCM-22 zeolite-based system to produce jet fuel from the 1-hexene oligomerization

The oligomerization of light olefins is an alternative for generating clean liquid fuels. In this study, the MCM-22 zeolite featuring a partially disordered layered structure with framework combined 10 membered ring (10 MR) was discussed for 1-hexene oligomerization. MCM-22 and Y zeolite were compared to investigate the influences of the framework and acidity strength on the activity and yield in the 1-hexene oligomerization. The results indicated that the MCM-22 zeolite was an efficient catalyst for oligomerization compared to Y zeolite. The MCM-22 zeolite was characterized in detail by NMR, Py-FTIR, and TG analyses. The catalytic performance and deactivation properties of MCM-22 zeolite in the oligomerization reaction of 1-hexene were investigated. Structure–activity relationships were established through the kinetic study. Although the density of strong acid sites was essential for the oligomerization of 1-hexene, the presence of low pressure was also necessary for the formation of dimers. Thus, MCM-22 zeolite demonstrates a substantial improvement in initial conversion and catalyst lifespan for 1-hexene oligomerization.