Catalysts For Hydroisomerization Research Articles

Regulating the location relationship between Cu nanoparticles and Pt atoms to enhance the catalytic hydroisomerization performance: Together or apart?

Single atom catalysts have been recently reported as the efficient catalysts for hydroisomerization compared to the conventional nanoparticle catalyst. Despite the fascinating advantage in enhancing the metal activity or reducing the catalyst cost, the long-term stability of the single atom catalyst seemed not that satisfactory, especially when reacting under atmospheric pressure. Herein, Pt single atom catalysts were combined with Cu nanoparticles by different means to explore a new way to improve the catalytic performance. Cu nanoparticles were located away from Pt sites to form a binary catalyst, or acted as the support of Pt atoms to form a single atom alloy (SAA) catalyst. With the binary catalyst Pt1–0.1Cu@CS, the conversion of the n-heptane after time on stream of 50 h increased to 70.3 %, higher than Pt1@CS (47.3 %). Besides, excessive Cu nanoparticles in the binary catalyst were found rather harmful to the catalysis instead. However, the SAA catalyst Pt1Cu@SAPO-11 showed a poor activity in hydroisomerization compared to Pt1@CS, indicating that the alloy structure should go against the activation of reactant. The roles of Pt atoms and Cu nanoparticles in different catalysts were discussed in detail. The reaction mechanism of hydroisomerization was refined with the different functions of the dual metal sites. This work might be instructive for the design of single atom catalysts combined with metal nanoparticles.

Direct synthesis of low-silica ZSM-48 zeolite via seed-assisted hydrothermal synthesis with 1,6-hexanediamine as template

ZSM-48 zeolite is characteristic of 10-member ring (10-MR) one-dimensional tubular channel structure and finds extensive applications in catalytic hydroisomerization reactions. Here we developed an efficient synthetic strategy for low-silica ZSM-48 zeolite with a SiO2/Al2O3 ratio at 30∼176 via a seed-assisted hydrothermal synthesis method, overcoming the limit that 1,6-hexanediamine (HDA) template can only be used to synthesize high-silica (i.e., SiO2/Al2O3 ratio >200) zeolites. A two-step crystallization procedure coupled with zeolite seed-assisted synthesis strategy was enrolled to realize well crystallized ZSM-48 zeolites, in which the zeolite nuclei are sufficiently produced at the nucleation temperature at 100 °C for 24 h with the aid of zeolite seeds, and the zeolite growth is proceeded at the crystallization temperature at 160 °C for 48 h. The morphology and particle size of low-silica ZSM-48 have been manipulated by adjusting the synthetic parameters, such as the alkalinity and silicon source of aluminosilicate gel for zeolite, the crystallization manner (static or dynamic crystallization), as well as the presence of additive (i.e., sodium chloride). The as-synthesized ZSM-48 zeolite exhibits a significantly high acid content of 0.194 mmol/g, highlighting its potential as an excellent acidic support for hydroisomerization catalysts. The cost-effective and environmentally friendly synthesis strategy, which is anticipated to expand the application of alkylamine organic templates in the synthesis of low-silica ZSM-48 zeolite.

Bifunctional Ni2P/SAPO-11 catalyst for simultaneous hydroisomerization of 1-hexene and hydrodesulfurization of thiophene

A bifunctional Ni2P/SAPO-11 catalyst for the upgrading of fluidized catalytic cracking (FCC) gasoline was constructed to achieve the simultaneous removal of sulfur and prevention of octane number loss. In the preparation of Ni2P/SAPO-11, a modification with an ammonia post-treatment led to improved dispersion and high catalytic performance. Adsorption and kinetic study demonstrated that thiophene preferentially and more strongly occupied the Ni2P sites, so as to inhibit the undesired saturation of 1-hexene and facilitate the parallel skeletal isomerization on Ni2P/SAPO-11. The concerted synergy of Ni2P crystallites for hydrodesulfurization and moderate Brønsted acid sites of SAPO-11 for isomerization led to full conversion of thiophene and 1-hexene with 74 % selectivity to branched isomers at 320 °C and 1.5 MPa.

Highly effective Pt-Pd/ZSM-22 catalysts prepared by the room temperature electron reduction method for the n-hexadecane hydroisomerization

The development of highly effective bifunctional catalysts for n-hexadecane hydroisomerization is still essential to produce second-generation biodiesel. Herein, a Pt-Pd/ZSM-22-G (abbreviated as Pt-Pd/Z22-G) bimetallic catalyst was prepared by employing a room temperature electron reduction (RTER) method with glow discharge as the electron source. As a contrast, a series of Pt/Z22-H, Pd/Z22-H and Pt-Pd/Z22-H catalysts were prepared by the conventional hydrogen reduction method. The Pt-Pd/Z22-G catalyst reveals more exposed metal sites, larger CMe/CH+ values and an enhanced distribution of Pt-Pd(111) facets compared with the Pt/Z22-H, Pd/Z22-H and Pt-Pd/Z22-H catalysts. These modifications are originated from the stronger electron interactions and the smaller metal nanoparticles because of the effects of highly energetic reducing electrons. The n-hexadecane hydroisomerization results show that the iso-hexadecane yield over the Pt-Pd/Z22-G catalyst is 82.9%, which is the highest among four investigated catalysts in this work. This phenomenon occurs because more exposed Pt-Pd(111) facets and larger CMe/CH+ ratios are beneficial for the adsorption and hydrogenation of iso-alkene intermediates at metal sites to increase the iso-alkanes yield based on density functional theory (DFT) calculations. Furthermore, the iso-alkanes yield over the Pt-Pd/Z22-G catalyst also keeps steady after long-term tests for 120 h because of the limited metal aggregation and carbon deposition.

In situ synthesis of nanosized ZSM-12 zeolite isomorphously substituted by gallium for the n-hexadecane hydroisomerization

The ZSM-12 zeolite has attracted attention as the promising acid component of bifunctional catalysts for the n -alkane hydroisomerization because of its large size of micropore openings (0.57 nm × 0.61 nm) with 12-membered-ring and one-dimensional channels. However, the larger crystal size and stronger Brønsted acid strength of microsized ZSM-12 zeolite will lead to cracking of iso -olefin intermediates and decrease the iso -alkane yield. In this study, ZSM-12 zeolite samples partially and completely isomorphously substituted with gallium ([Ga,Al]Z12 and GaZ12) were in situ synthesized. The characteristic results indicate that isomorphous substitution by Ga can effectively reduce the crystal size to increase the mesoporosity and weaken the Brønsted acidity of the [Ga,Al]Z12 and GaZ12 samples. In addition, bifunctional catalysts with more appropriate metal-acid proximity for n -hexadecane hydroisomerization were prepared by mixing the 0.6Pd/A sample with 0.6 wt.% Pd loaded on γ-Al2O3 and the ZSM-12, [Ga,Al]Z12 and GaZ12 samples, respectively. The 0.3Pd/A-[Ga,Al]Z12 and 0.3Pd/A-GaZ12 catalysts both promote the maximum iso -hexadecane yield and distribution of multi-branched iso -hexadecane products due to their enhanced mesoporosity, reduced Brønsted acid strength, increased CPd/CH+ ratios and improved metal-acid balance. Especially for the 0.3Pd/A-GaZ12 catalyst, when the n -hexadecane conversion is 93.5%, the maximum iso -hexadecane yield reaches 80.6%, and the proportion of multi-branched iso -hexadecane products is 64.6%, which are both the highest among all investigated catalysts. Accordingly, Ga isomorphous substitution is an effective strategy to develop the efficient bifunctional catalysts for hydroisomerization.

Deactivation mechanism of NiWS/SAPO-11 catalyst in hydroisomerization of n-hexadecane: Insights into coke deposition behavior and active phase migration

The application of non-noble metal supported catalysts in the hydroisomerization of long-chain n-alkanes is a novel field, and there is currently not any research available on the deactivation process of these catalysts. We investigated into the deactivation mechanism of NiWS/SAPO-11 catalyst in the hydroisomerization of n-hexadecane in this work for the first time. Specifically, coke deposition behavior and active phase migration were investigated. The reduction of catalytic efficiency of the catalyst was partially aided by the decrease in specific surface area, pore volume, and acid density. From the perspective of the active phase, the clusters of NiWS active phase migrated as the reaction time increased, mostly resulting in an increase in both the stacking number and the length of active phase slabs. The migration of active phase increased the distance between active phase clusters and metal sites, and decreased the utilization ratio of active metal atoms. From the perspective of coke deposition, the coke formed on the catalyst includes soft coke and hard coke. The formation and evolution of coke on the catalyst were investigated. The soft coke (aliphatic compounds) progressively transformed into hard coke (polycyclic aromatic hydrocarbons and graphite-like), and the coke gradually migrated from the external surface of the catalyst to the pore channels as the reaction time increased. It is expected to provide theoretical basis and reference value for the deactivation research and design of non-noble metal supported hydroisomerization catalyst.

Synthesis, Modification, and Performance Regulation of SAPO-11 Molecular Sieve and Development of n-Alkane Hydroisomerization Catalyst: A Mini-Review

Synthesis, Modification, and Performance Regulation of SAPO-11 Molecular Sieve and Development of <i>n</i>-Alkane Hydroisomerization Catalyst: A Mini-Review

Synergistic Catalytic Performance of Pt-Au Bimetallic Catalysts on High-Crystallinity ZSM-23 Zeolite for Hexadecane Hydroisomerization: Metal-Acid Balance and Enhanced Isomerization Selectivity.

Highly crystalline ZSM-23 zeolite, exhibiting a distinctive dumbbell morphology, was synthesized via a hydrothermal method. Bifunctional catalysts, comprising single metals (Pt or Au) and bimetals (Pt-Au), were successfully prepared by using a positional precipitation method. The hydroisomerization of hexadecane served as a model reaction to assess the catalytic performance arising from the synergistic effects of bimetallic active sites. In comparison to single-metal catalysts, 0.3Au0.7Pt/ZSM-23 demonstrated increased n-C16 conversion, while 0.5Au0.5Pt/ZSM-23 exhibited enhanced i-C16 selectivity, achieving the highest i-C16 yield. The bimetallic catalyst not only finely tuned the metal site activity through bimetallic synergy but also achieved a superior balance between metal and acid catalysis, resulting in improved catalytic performance in the n-C16 hydroisomerization. The Pt-Au bimetallic catalyst approached the ideal requirements for a hydroisomerization catalyst, achieving a harmonious balance of metal and acid catalysis.

Hydroisomerization catalysts with enhanced metal charge density prepared by a novel low temperature loading method

Bifunctional catalysts, consisting of metal and acid sites, can be applied in the alkane hydroisomerization reaction, and the process of dehydrogenation and hydrogenation at the metal sites can balance the isomerization and cracking routes, carbocation rearrangement at acidic sites affecting the hydroisomerization performance. Metals are traditionally prepared at high temperature which results in metal agglomeration. To address this drawback, a low-temperature method for catalyst loading is proposed. The method provides catalysts with smaller particle sizes and higher dispersion to prevent metal agglomeration. Specifically, when the loading capacity of metal Pt is 0.3 wt%, this method results in both single atoms and metal clusters within the catalyst. And the catalyst shows a balanced metal-acid function once capacity for Pt loading increased to 0.5 wt%. Moreover, the electron density of Pt following metal loading on g-C3N4 support increased, and the turnover frequency (TOF) of each metal site also increased with the rise of nPt/nA. Furthermore, it is noted that the catalyst prepared by low-temperature loading shows significant increased hydroisomerization activity and selectivity compared to those prepared with the traditional method, with an isomer yield of up to 68.2 %.

Metal-containing zeolite composites with separated phases as catalysts for hydroisomerization of linear hexane

Metal-containing zeolite composites with separated phases as catalysts for hydroisomerization of linear hexane

Unusual roles of ceria as the support of a single-atom catalyst in hydroisomerization of n-heptane: Phase boundary acts as transport channels between different active centers

Hydroisomerization of n-alkanes plays an important role in fuel and lubricants processing. Bifunctional catalysts with ultralow platinum loading have recently been reported successively for hydroisomerisation. Herein, the catalysts were prepared successfully with different methods to improve the catalytic performance. The conversion of 0.01%Pt1@CeOx/SAPO-11 prepared by co-calcination method (0.01%Pt1@CS-c) is 71.4%, 25% higher than the other prepared by precipitation method. The turnover frequency per active surface platinum site (TOFPt) of 0.01%Pt1@CS-c is as high as 13115 h–1. Revealed by the X-ray photoelectron spectroscopy (XPS) results, the quality of phase boundary/intersurface between ceria and zeolite is found significantly different. The conjunction quality of phase boundary directly affects the spillover rate of intermediate species, which further leads to an apparent activity difference. In addition, the possible role of ceria in the reaction is discussed, rather than just as a carrier for the active metal atoms.

Optimizing hydrogen-driven n-pentane isomerization over Pt-doped fibrous ZSM-5

This study focuses on developing and optimizing Pt-doped fibrous ZSM-5 catalysts for n-pentane hydroisomerization. The catalysts demonstrated improved Pt dispersion and surface area through comprehensive characterization, particularly in Pt/HFZSM-5. Catalytic evaluations revealed that Pt/HFZSM-5 exhibited remarkable hydroisomerization performance (91.9 % of conversion), surpassing commercial ZSM-5, attributed to the enhancement in physicochemical attributes like high surface area, moderate acid sites and active Pt dispersion. Notably, under optimized conditions (reaction temperature: 323.6 °C, treatment temperature: 453.7 °C, F/W ratio: 498.7 mL/g.min), Pt/HFZSM-5 achieved an impressive 92.6 % isomerization yield, signifying a substantial enhancement in catalytic activity. Mechanistic insights highlighted the pivotal role of acid sites along with hydrogen activation in hydroisomerization. The utilization of statistical modeling, response surface analysis, and experimental validation underscored the accuracy of the predictive model and its alignment with the observed outcomes (with 2.1 % variance). This work contributes to developing high-performance hydroisomerization catalysts and advances understanding of the underlying reaction mechanisms.

Effect of synthesis medium and synthesis conditions on physicochemical properties of hierarchical SAPO‐11 molecular sieve synthesized via fractional crystallization method

AbstractSAPO‐11 molecular sieve has been widely used as the support of bifunctional catalyst for hydroisomerization of n‐alkanes because of its mild acidity and unique one‐dimensional pore structure, and has been widely used in industry. However, how to further improve and improve the physicochemical properties of SAPO‐11 molecular sieve is still worth studying. In this work, fractional crystallization method was used to synthesize graded SAPO‐11 molecular sieve. The effects of medium system, feed SiO2/Al2O3, crystallization time and crystallization temperature of the second crystallization process on the physicochemical properties of SAPO‐11 molecular sieve were investigated from the perspectives of crystallinity, textural properties and acidity. The suitable synthesis medium and the best synthesis conditions were determined. It is expected to provide reference for the fractional crystallization synthesis of high performance SAPO‐11 molecular sieve.

Tailored synthesis of plate-like SAPO-11 molecular sieve and its application in non-noble metal-supported catalyst for efficient hydroisomerization of long-chain n-alkanes

The tailored synthesis of plate-like SAPO-11 molecular sieve was achieved by introducing seed-surfactant directing agent into the synthesis system for the first time. The effects of morphological change of SAPO-11 molecular sieve on the physicochemical properties of SAPO-11 and the active phase properties of the catalyst were analyzed via a series of characterization techniques. The hydroisomerization of n-hexadecane was used as the model reaction to evaluate the catalytic performance of NiWS supported catalysts based on SAPO-11 molecular sieve with different morphologies. The plate-like SAPO-11 possessed better textural properties and acidity than pseudo-spherical SAPO-11. Meanwhile, the stacking number, dispersion and metal sulfidation degree of the active phase of sulfided NiW/SAPO-11-P were improved, and its high proportion of type II active phase optimized the metal–acid synergistic catalytic mechanism. Through tracking and analyzing the crystallization process of plate-like SAPO-11, the formation mechanism of plate-like SAPO-11 was investigated and revealed. The adsorption kinetics, diffusion behavior and catalytic kinetics of n-hexadecane on the catalysts were emphatically investigated. The optimized support structure and active phase properties improved the intrinsic catalytic activity and hydroisomerization reaction path priority of NiW/SAPO-11-P. It was found that the hydroisomerization reaction on NiW/SAPO-11-P was carried out under the reaction-limiting conditions, while the hydroisomerization reaction on NiW/SAPO-11-C was carried out under the reaction-controlling conditions. The effects of plate-like SAPO-11 on the activity stability of the catalyst was investigated, and the essential reasons for the differences in activity stability of the catalysts were revealed through comprehensively analyzing the coke formation difference and diffusion behavior difference. It is expected to provide reference for the tailored design of SAPO-11 molecular sieve with special morphology and the preparation of efficient hydroisomerization catalyst.

The Preparation of Nanosized Pd/ZSM-23 Bifunctional Catalysts for n-Hexadecane Hydroisomerization by Employing PHMB as the Growth Modifier

The development of highly effective metal–zeolite bifunctional catalysts for the hydroisomerization of n-alkanes is a paramount strategy to produce second-generation biofuels with high quality. In this study, polyhexamethylene biguanide hydrochloride (PHMB) is precisely added to the initial gel to synthesize nanosized ZSM-23 zeolites (Z23-xPH). Due to orientation adsorption and steric hindrance effects of PHMB, each sample of Z23-xPH demonstrates enhanced mesoporosity in comparison with the conventional Z23-C zeolite. Furthermore, the Brønsted acid density of the Z23-xPH samples is also significantly reduced due to a reduction in the distribution of framework Al at T2–T5 sites. The corresponding Pd/23-C and Pd/Z23-xPH bifunctional catalysts with 0.5 wt% Pd loading for n-hexadecane hydroisomerization are prepared by incorporating ZSM-23 zeolites as acid supports. According to the catalytic test results, the suitable addition of PHMB can effectively promote the iso-hexadecane yield. The Pd/Z23-2PH catalyst with an nPHMB/nSi molar ratio of 0.002 demonstrates the highest maximum iso-hexadecane yield of 74.1% at an n-hexadecane conversion of 88.3%. Therefore, the employment of PHMB has provided a simple route for the development of highly effective Pd/ZSM-23 catalysts for n-alkane hydroisomerization.

Sustainable aviation fuel – Comprehensive study on highly selective isomerization route towards HEFA based bioadditives

This paper presents the results of a biofuel production process conducted using a cutting-edge, highly selective hydroisomerization catalyst. Rapeseed oil was used as a basic raw material for the synthesis of sustainable aviation fuel. The objective was to verify the catalysts hydroisomerization activity by comparison the effectiveness of obtained biofuel using a miniature jet engine and its compliance with current standards. The developed two-stage process by Łukasiewicz - ICSO involves the conversion of rapeseed oil into a C15–C18 hydrocarbon fraction through hydrodeoxygenation and subsequent hydroisomerization using the Pt/(SAPO-11 + Al2O3) catalyst. The overall average final yield of the aviation fuel fraction (C9–C18) after 500 h of testing was (60 ± 3)% based on the initial rapeseed oil used.In comparison to 100% petrochemical JET A-1 fraction, a BIO50 blend (mixture of biocomponent and JET A-1) is characterized by a more preferable crystallization temperature (−64 °C) and a 50% lower content of aromatic compounds fulfilling all the requirements of ASTM D-7566 standard. Additionally, tests conducted on a miniature jet engine have shown, that the BIO50 mixture has a higher calorific value compared to standard petrochemical fuel, what allows to reduce the overall fuel consumption and slightly lower CO2 and NOx emissions.

The Synthesis of a Pt/SAPO-11 Composite with Trace Pt Loading and Its Catalytic Application in n-Heptane Hydroisomerization

n-Alkane hydroisomerization over bifunctional catalysts is an effective approach for clean fuel production. However, achieving metal–acid synergy and enhancing the catalytic performance by the preparation of bifunctional catalysts with suitable proximity between the metal sites and Brønsted acid sites are still challenging. In this work, a series of Pt/SAPO-11 catalysts with different Pt loading applied in n-heptane hydroisomerization was synthesized. SAPO-11 was synthesized by the Instant Exactness Synthesis (IES) method, which, with unique morphology and pore structure, was chosen as support for the hydroisomerization catalysts; Pt/SAPO-11 was synthesized with the impregnation method, Pt nanoclusters with trace loading were fabricated over the SAPO-11 support, and the as-synthesized catalysts with different Pt loading were labeled as xPt/SAPO-11 (x = 0.1, 0.3, 0.5, 0.8 and 1.0). Various characterizations, including XRD, nitrogen adsorption–desorption, SEM, TEM, NH3-TPD and XPS, were carried out on catalysts to obtain deep insights into the microstructure and valence states of xPt/SAPO-11. The catalytic performance of xPt/SAPO-11, including catalytic selectivity and conversion, was investigated in the n-heptane hydroisomerization in detail. Pt loading affected the catalytic properties of xPt/SAPO-11 in the hydroisomerization of n-heptane. The selectivity of 0.5Pt/SAPO-11 toward isomers was about 65% with a conversion of 77% at 310 °C, which was obviously higher than other xPt/SAPO-11 catalysts.

Novel construction and synthesis mechanism of b-axis oriented flower-like SAPO-11 molecular sieve in OSC-containing system for efficient hydroisomerization of long-chain n-alkanes

In view of the fact that different kinds of flower-like zeolites and materials have been synthesized for catalysis, but there are few reports on the construction of flower-like SAPO-11 molecular sieve. In this work, we successfully synthesized b-axis oriented flower-like SAPO-11 molecular sieve with multi-layered structure in the organosilicon compounds (OSC)-containing system for the first time. The morphology and b-axis thickness of SAPO-11 flakes were controlled and the tailored synthesis of b-axis oriented flower-like SAPO-11 with multi-layered structure was realized by adding [3-(trimethoxysilyl) propyl] octadecyl dimethyl ammonium chloride (DMC) into the synthesis system. The NiWS supported catalyst for hydroisomerization of n-hexadecane was prepared by using the synthesized flower-like SAPO-11 as support. Through a series of characterization techniques, the effects of morphological changes of SAPO-11 molecular sieve on the textural properties, acidity, element composition and silicon distribution of SAPO-11 molecular sieve were investigated, and the influence mechanism of morphological changes of the support on the active phase properties of the catalyst was studied. The formation mechanism of multi-layered flower-like SAPO-11 was proposed, the influence mechanism of the morphological change of the support on the catalytic performance of the catalyst and the catalytic reaction kinetics was investigated, and the structure–activity relationship between flower-like SAPO-11 and NiWS supported catalyst was systematically expounded. It provides a reference for enriching the morphological types of SAPO-11 molecular sieve and preparing catalyst for high-efficiency hydroisomerization of long-chain n-alkanes.

Ni catalyst on ZSM-22 nanofibers bundles with good catalytic performance in the hydroisomerization of n-dodecane

Developing non-noble catalyst with high performance is significant in the hydroisomerization of long-chain n-alkane to iso-alkanes. In this study, nanofiber-bundled ZSM-22 without any additives was successfully synthesized and used to prepare Ni catalyst (Ni/NB-HZSM-22, Ni loading 1.0 wt%) for hydroisomerization of n-dodecane (n-C12). The obtained Ni/NB-HZSM-22 catalyst exhibited much higher intrinsic catalytic activity (TOF = 0.077 s−1) than a conventional needle-shaped ZSM-22 supported Ni catalyst (Ni/C-HZSM-22, 0.026 s−1), especially higher isomerization selectivity (TOFiso, 0.071 s−1) than the Ni/C-HZSM-22 catalyst (0.021 s−1). Additionally, the Ni/NB-HZSM-22 catalyst had lower cracking/iso-dodecanes (iso-C12, 0.08) and di-branched/mono-branched (0) ratios than the Ni/C-HZSM-22 catalyst (0.25 and 0.07) after extrapolation of the n-C12 conversion to zero. This is mainly attributed to the nanofiber–bundled NB-HZSM-22 with well-crystallized structures and suitable acidity, leading to good synergistic catalysis between metal and acidic function for the Ni/NB-HZSM-22 catalyst. Although the Ni catalyst on the parent NB-ZSM-22 was less active, it had a similar optimal iso-C12 yield compared to the Ni/NB-HZSM-22 catalyst. In addition, the Ni/NB-HZSM-22 catalyst showed a maximum iso-C12 yield of 74.8%, which was much better than the Ni/C-HZSM-22 catalyst (58.7%), and showed comparable performance to a Pt catalyst on the NB-HZSM-22 (76.7%). These results suggested that the Ni catalyst on the NB-HZSM-22 was a promising candidate for the hydroisomerization catalyst.

Pd–Pt promoted HPMo/UiO-66 acid catalyst for n-hexane hydroisomerization for higher quality and cleaner fuel production: Catalytic activity and kinetic modeling

The preparation of catalysts with adequate stability for the n-hexane hydroisomerization reaction is always a challenge in refineries. Therefore, in this work, the metal-organic framework UiO-66, heteropoly phosphomolybdic acid (HPMo), and bifunctional (Pd + Pt)/HPMo/UiO-66 samples were synthesized, characterized by experimental techniques, and tested in the n-hexane hydroisomerization reaction. As a result, the microporous (0.2%Pd+0.3%Pt)/30%HPMo/UiO-66 bifunctional catalyst exhibited an iso-hexane selectivity of 86% and n-hexane conversion of 72.1% after 36 h of reaction time. In addition, the Langmuir-Hinshelwood model was used to examine the kinetics of this reaction due to the inhibitory effect of hydrogen. The results provided an acceptable fit to the experimental data and allowed the determination of the kinetic parameters. Accordingly, the apparent activation energy of this bifunctional catalyst and the adsorption heats of hydrogen and n-hexane were calculated at 26.27, −16.12, and −7.82 kJ mol−1, respectively.