Adsorptive Desulfurization Performance Research Articles

Diatomite supported highly-dispersed ZnO/Zn-co-embedded ZIF-8 derived porous carbon composites for adsorption desulfurization

The metal organic framework (MOFs)-derived porous carbon materials with highly dispersed metal active sites were of the exclusive application foreground in many field, such as catalyst, electrochemistry, adsorption desulfurization and so on. However, the loss issue of metal active sites in MOFs frame was indispensable during the high temperature carbonization because of the lower boiling point of many metals, thus fundamentally affecting the atom-scale uniform distribution merit of MOFs-derived porous carbon materials. This work was to provide a novel strategy to address the loss issue of the active metal volatilization in the fabrication of MOFs-derived porous carbon materials. The ZnO nanosheets were pre-grown on the surface of diatomite by using in-situ microwave-assisted preparation, and thereafter the Zn-containing ZIF-8 particles covered the surface of ZnO nanosheets by virtue of the ZnO-induced growth. The results affirmed that the high content Zn-doped porous carbon materials were achieved and the Zn volatilization in MOFs was restrained on account of the occurrence of ZnO on diatomite (DE) surface during the carbonization. The adsorption desulfurization performance of the ZnO/Zn-embedded porous carbon materials/DE (ZnO/Zn/C@DE) was examined by the sulfur-containing compounds in simulated oil. The adsorption desulfurization performance investigation indicated that the ZnO/Zn/C@DE had the optimum adsorption capacities of 45.3 mg/g for benzothiophene and 37.4 mg/g for thiophene. Nonetheless, the competitive adsorption desulfurization finding of toluene in simulated oil showed that the adsorption capacities of ZnO/Zn/C@DE for TH and BT were dramatically descended, suggesting the presence of S-M interaction, wherein S stood for the S atom in a thiophene molecule and their analogs, and M for Zn atoms in porous carbon materials.

Assessing the Efficacy of Graphene, Graphene Oxide, and Graphene Oxide Encrusted with Gold Nanoparticles for Sulfur Removal from Crude Oil: An Innovative Experimental Investigation

Crude oil, consisting of hydrocarbons, is the leading global energy source. Sulfur is the most abundant element after carbon and hydrogen in the structure of crude oil. Sulfur and sulfur compounds in the structure of petroleum are dangerous for both the environment and human health due to the SOx gases they produce after combustion. Removing sulfur from oil is a costly and difficult process. Therefore, the sulfur content of crude oil directly affects the price of oil. This study investigated the adsorptive desulfurization performance of graphene, graphene oxide, and graphene oxide functionalized with gold nanoparticles. The synthesized adsorbents were characterized by scanning electron microscopy, transmission electron microscopy, energy-dispersive X-ray analysis, reflection-absorption infrared spectroscopy, and X-ray photoelectron spectroscopy, and then 0.02 to 0.1 g adsorbents were taken separately and placed in a flask that included 50 ml of crude oil. Each flask was stirred at 400 rpm under ambient temperature for 1 h. After the reaction, the adsorbent was separated from the mixture with the help of a centrifuge, and the residual sulfur amount was checked. It was determined that the sulfur removal performance after 1 h contact time was between 2.09%–5.48% for Graphene, 1.91%–4.06% for GO, and 0.575%–6.471% for AuNPs/GO.

Synergistic Boosting Capture Ability of Thiophene Sulfur with a Novel Dual-Amino-Functionalized MOF-on-MOF Adsorbent.

A single metal-organic framework (MOF) exhibits some drawbacks in deep adsorptive desulfurization such as insufficient functional active sites, water instability, low surface area, etc. Herein, a dual-amino-functionalized (ZIF-8-NH2)-PVP-(Cu-BTC-NH2) core-shell dual MOF adsorbent was first synthesized by the hydrothermal growth method. The adsorption performance of thiophene sulfur (ThS) is systematically investigated and evaluated at mild temperatures through batch tests. The (ZIF-8-NH2)-PVP-(Cu-BTC-NH2) exhibits good adsorption ability toward ThS, which is attributed to the associative effects of dual MOFs with structure features such as hydrogen bond, open metal active sites, suitable pore sizes and π-π conjugation, etc. Meanwhile, the (ZIF-8-NH2)-PVP-(Cu-BTC-NH2) embedded 25 wt % water still remains crystal intact and good adsorption desulfurization performance, which is attributed to the NH2- functional groups. After five recycles, more than 90% ThS uptake onto (ZIF-8-NH2)-PVP-(Cu-BTC-NH2) could be recovered, exhibiting good reuse performance. This study presents a new strategy for grafting MOF-on-MOF with specific functional groups to improve the abilities of desulfurization and water resistance.

Electrospinning prepared nickel-based carbon fibers with enhanced adsorption capacity for adsorption desulfurization of fuels

Enhanced adsorption capacity of adsorbents with excellent regeneration properties always remained the focus of researchers in the adsorptive desulfurization (ADS) technology. In this paper, we report an electrospinning method to prepare nickel-based carbon fibers (NCF), and their adsorption desulfurization performance was compared with those of nickel-based carbon particles (NCP) obtained via traditional solid-state grinding method. The results demonstrated that compared with NCP, NCF contained more abundant mesoporous specific surface area and mesopore volume, well-distributed active metal sites, which would be beneficial to their enhanced adsorption desulfurization performance. As a result, the adsorption capacity of NCF was as high as 13.13 mg S/g in the ADS of thiophene, and its regeneration performance was also far better than that of NCP. In addition, the adsorption process of thiophene was briefly analyzed from the perspective of kinetics, which demonstrated that the adsorption of thiophene in NCF and NCP were both in accordance with the pseudo-second-order kinetic model.

Atomically Dispersed Aluminum Sites in Hexagonal Boron Nitride Nanofibers for Boosting Adsorptive Desulfurization Performance.

The exploitation of highly efficient and cost-effective selective adsorbents for adsorptive desulfurization (ADS) remains a challenge. Fortunately, single-atom adsorbents (SAAs) characterized by maximized atom utilization and atomically dispersed adsorption sites have great potential to solve this problem as an emerging class of adsorption materials. Herein, aiming at improving the efficiency of ADS performance via the economical and feasible strategy, the desirable SAAs have been fabricated by uniformly anchoring aluminum (Al) atoms on hexagonal boron nitride nanofibers (BNNF) via an in situ pyrolysis method. Remarkably, Al-BN-1.0 exhibited a superior adsorption capacity of 46.1 mg S/g adsorbent for dibenzothiophene, with a 45% increase in adsorption capacity compared to the pristine BNNF. Additionally, it demonstrated excellent adsorption of other thiophene sulfides. Moreover, the ADS mechanisms have been investigated through special adsorption experiments combined with density functional theory (DFT) calculations. It was demonstrated that the superior ADS performance and selectivity of Al-BN-1.0 originate from the sulfur-aluminum (S-Al) and π-π interactions cooperating synergistically. This work would cast light on a novel fabrication strategy for the SAAs based on the two-dimensional material with a tunable metal site configurations and densities for varied selective adsorption and separation.

3D printing of hierarchically porous lightweight activated carbon/alumina monolithic adsorbent for adsorptive desulfurization of hydrogenated diesel

Hierarchically porous materials have shown extensive applications in the domain of adsorbing environmental contaminants. Herein, a novel approach utilizing a 3D printing-freeze-drying strategy was presented to successfully design a hierarchically porous lightweight three-dimensional activated carbon/alumina (3D-AC/Al2O3) monolithic adsorbent for adsorptive desulfurization of hydrogenated diesel. 3D-AC/Al2O3 monolithic adsorbents can exhibit superior adsorptive desulfurization performance at room temperature, as well as good cycling performance, thermal and mechanical stability. With incorporating designed 3D-printed liquid redistributor to enhance mass transfer within fixed bed, 3D-AC/Al2O3 can achieve 96.6 % sulfur removal with the sulfur adsorption capacity of 10.13 mg-S/g-Ads for feed oil of high initial sulfur content. Benefited from the hierarchical porous structure to form micron-millimeter scale adsorption micro-channel, feed oil can enter the interior of the monolithic adsorbents and fully contact with the adsorptive active sites to enhance the mass transfer. Furthermore, through the design of the “adsorption-elution” reaction process, it becomes possible to accomplish both the removal of sulfides from feed oil through adsorption and the recovery of value-added sulfides that adsorbed onto the adsorbents. This simultaneous achievement highlights the practical potential for application in this context. Notably, the integrated 3D-AC/Al2O3 adsorbent exhibited promising desulfurization effects for application of real hydrogenated diesel.

Integrated oxidative-adsorptive desulfurization of model and real fuel oils over a Zn-impregnated hydroxyapatite-activated carbon (Zn/HA-AC) composite

Herein, a Zn-impregnated hydroxyapatite-activated carbon (Zn/HA-AC) composite catalyst was fabricated and was, in turn, applied for the desulfurization of a model and real oil samples via the integrated adsorptive-oxidative desulfurization strategy. Activity results revealed that Zn/HA and AC (25:75) realized 76.7% dibenzothiophene (DBT) adsorptive desulfurization at 50 °C in 60 min reaction time at an adsorbent dose of 0.14 g/20 mL of feed. Zn/HA-AC(25:75) composite catalyst was characterized by Fourier transform infrared spectroscopy, X-ray diffraction, energy-dispersive X-ray analysis, and scanning electron microscopy analysis. In the oxidative desulfurization (ODS) combined with adsorptive desulfurization experiments, under the optimum conditions of 45 oC temperature for 60 min and a catalyst dose of 0.1 g/20 mL of feed using H2O2 and HCOOH, Zn/HA-AC (25:75) achieved 93% DBT conversion. Under these optimized experimental parameters, the adsorptive desulfurization and catalytic ODS performance (% DBT conversion) of Zn/HA-AC (25:75) for real gasoline, kerosene, and diesel oil reached 18, 31 and 15%, and 31.66, 55.31 and 11.19%, respectively. Contrary to this, under the integrated catalytic-oxidative-adsorptive experiments, the desulfurization performance of Zn/HA-AC (25:75) for gasoline, kerosene, and diesel oil reached 61, 41, and 34%, respectively.

Enhancing Adsorption Desulfurization Performance Using Enriched Cu(I) Sites over Microenvironment-Modulated HKUST-1.

High-efficiency adsorption of aromatic sulfur-containing compounds from liquid hydrocarbon fuels over metal-organic frameworks (MOFs) is challenging because of inert metal sites. A new method, the Ce-enhanced modulation of MOFs' microenvironment, is proposed to modulate the -COO···Cu(II)- coordination microenvironment of Hong Kong University of Science and Technology (HKUST-1) using Ce(III) as a molecular scalpel for fabricating abundant high-efficiency Cu(I) and Cu-coordination-unsaturated sites and improving the pore structures around adsorptive sites. The optimal CH-250 thus exhibits adsorptive capacities for 20.2, 28.0, and 58.3mgSg-1 of thiophene, benzo-thiophene, and dibenzothiophene, respectively, which are superior to most reported MOFs, zeolites, and nanoporous carbons. The constructed Cu(I) sites show stronger affinity for dibenzothiophene (-0.86eV) than the initial Cu(II) (-0.74eV) for out-of-plane adsorption. Further, they are far stronger in-plane adsorption interactions in DBT/CH-250 (-0.90eV) than those in DBT/HKUST-1 (-0.37eV). Thus, molecular engineering for modulating the coordination microenvironment of MOFs shows great potential for adsorption desulfurization.

Insight into the relationship between effective active sites and ultra-deep adsorption desulfurization performance of CuCeY with different Cu precursors

Adsorption desulfurization processes employing zeolites as sorbents are considered to be prospective desulfurization methods owing to their cost-effectiveness.Y zeolites modified with Cu and Ce have excellent adsorption capacity and selectivity for adsorption desulfurization. However, the effect of using different metal precursors on the active sites of these sorbents and their adsorption desulfurization performance still remains ambiguous, which impedes the development of improved desulfurization adsorbents. Herein, Cu(NO3)2, Cu(Ac)2, and CuSO4 were selected as Cu precursors to prepare a series of CuCeY from CeY zeolite. Desulfurization experimental results indicate that outstanding breakthrough adsorption capacities for thiophene (ca. 6.25 mg·g−1) with benzene as the solvent were achieved by the CuCeYA. The interaction between the CuCe metals was beneficial for enhancing the electron transfer between Cu2++Ce3+/Ce4++Cu+. Moreover, using different copper precursors significantly changed the redox ability of the adsorbent surface. Changing the copper precursor also had a significant effect on the locations of Cu and Ce ions, and using Cu(Ac)2 as a metal precursor facilitated the migration of Cu+ (53.6%) and cerium species (35.9%) to the supercage. In situ infrared characterization showed that the oligomerization of thiophene on CuCeYA was significantly restricted due to the lowest B acid content (11.85%) in the CuCeYA.

Hierarchically porous N-doped carbon derived from ZIF-8 for adsorption desulfurization

Hierarchical N-decorated porous carbons (NC) have been successfully synthesized using the N-rich metal-organic framework ZIF-8 as a precursor, along with dicyandiamide as the secondary nitrogen sources. The synthesized NC materials demonstrated remarkable adsorption desulfurization capacities. Particularly, the NC-0.2 sample exhibited high surface areas and a large number of micropores, which facilitated rapid mass transfer of organic sulfide molecules. Furthermore, the presence of predominantly excellent graphitic nitrogen content in the NC materials provided enriched active sites, thereby improving the adsorption desulfurization performance.

High-efficiency desulfurization adsorbents loaded with uniformly dispersed nano-metal particles prepared from phytoremediation

Plants can absorb heavy metals from wastewater due to their biological characteristics, and can evenly disperse these metals into plants. Adsorbents prepared by pyrolysis of metal-rich plants have the advantage of uniform metal loading and small metal particles. Therefore, in this study, Pistia stratiotes was cultured in six monometallic solutions of the same concentration to obtain a monometallic desulfurization adsorbent (ACA-I); after screening, culture in three metal solutions of Ni-Co, Ni-Cu and Co-Cu to obtain bimetallic desulfurization adsorbent (ACA-II). The results of TEM and SEM showed that the diameter of metal nanoparticles supported by ACA-II was smaller and more uniform. The adsorption desulfurization performance of PSLAC-Co-Ni, PSLAC-Cu-Ni and PSLAC-Co-Cu was 87 mg g−1, 83 mg g−1 and 80 mg g−1, respectively, which were better than that of ACA-I. However, the physical structures as well as the adsorption desulfurization performance of ACA-II and ACA-I were better than those of adsorbents prepared by conventional methods. This simultaneously solves environmental problems such as heavy metal pollution of water bodies, treatment of metal-rich plants and excessive sulfur content in fuel oil. This study provides a new idea for the preparation and use of loaded adsorbents, and also provides some data support for further industrial applications.

Enhanced adsorption desulfurization performance over modified zeolite clinoptilolite for a model fuel in a competitive process

Enhanced adsorption desulfurization performance over modified zeolite clinoptilolite for a model fuel in a competitive process

3D printing of the multifunctional fixed-bed reactor and matched 3D-CeO2/ATP monolithic adsorbent for adsorption desulfurization

The construction of monolithic adsorbents can promote the potential industrial application for adsorption desulfurization of fuel. Herein, the 3D-CeO2/ATP monolithic adsorbents were successfully constructed through a 3D printing strategy, possessing superior adsorption desulfurization performance of more than 85 % sulfur removal under optimized adsorption reaction conditions at room temperature. Combined with the 3D-printed multifunctional fixed-bed reactor, the reaction process capable of adsorption-elution was designed for continuously realizing the deep adsorption of sulfide in fuel and the resource recovery of high-value sulfide products. The structure and physicochemical property of 3D-CeO2/ATP monolithic adsorbents were analyzed by series of characterizations, and the adsorption and elution mechanism were investigated in detail. The results reveal that the monolithic adsorbent with the internal staggered honeycomb structure was compared with that of the traditional in-line structure in terms of adsorption performance and computational fluid dynamics (CFD) fluid simulations, reflecting the advantages of 3D printing in structural forming to enhance mass transfer for promoting the adsorption process. Moreover, the 3D-printed monolithic adsorbents exhibit exceptional mechanical stability and good circulation performance, reaching the requirements for potential industrial application.

Examining the impact of different anions in Cu precursors on sulfur adsorption through zeolites with Cu ion-exchange

The majority of hydrogen is generated by converting hydrocarbons, with natural gas reforming accounting for over 50% of the total hydrogen production. However, the utilization of natural gas in generating hydrogen causes catalyst deactivation during the reforming process because of presence of sulfur compounds as odorants in commercial natural gas. Therefore, the removal of sulfur compounds from natural gas should be prioritized before its application in hydrogen production. Adsorption using Cu-ion-exchanged zeolites is an effective method for removing sulfur compounds from natural gas. In this study, the adsorptive desulfurization performance of tetrahydrothiophene (THT) was evaluated using pristine NaY and Cu-ion-exchanged Y zeolites. In particular, the effects of anions in the Cu compounds used for the ion exchange of zeolites were investigated using three Cu precursors (Cu(NO3)2, Cu(Ac)2, and CuSO4). Among the tested zeolite adsorbents, the NaY zeolite ion-exchanged with Cu(Ac)2 exhibited the highest adsorption uptake, whereas the NaY zeolite ion-exchanged with CuSO4 demonstrated the lowest adsorption uptake for THT. The analytical results indicated that following the exchange of Cu ions, a rearrangement of Si and Al was observed within the zeolite framework, resulting in the Si site distribution. The rearrangement of the framework and distribution of Si sites was influenced by the anions present in the Cu precursors. In addition, it was observed that Cu2+ primarily occupied two locations within the zeolite, namely the supercage and the sodalite cage, and the distribution of Cu2+ between these two sites varied amongst the Cu-ion-exchanged zeolites. This discrepancy was linked to the adsorption uptake for THT.

Open metal sites in bimetallic vanadium/chromium-organic framework for enhancing adsorptive desulfurization performance

Highly selective adsorption capacity is critical for meeting the challenge of deep removal of thiophene-based sulfurs from oil. How to regulate the active metal sites in metal organic frameworks (MOFs) to enhance the adsorption performance have been long sought after. Herein, the open metal sites with higher valence state are successfully constructed in bimetallic organic frameworks of MIL-47(xV/Cr)-Brs. The density function theory calculations and the spectra analysis reveal that not only the enhanced Metal-S and π-π interactions, but also the H-Bond between µ2-OH and S of thiophene synergistically improve the desulfurization performance, resulting in excellent capacity of 256 mgS g−1 and high selectivity of thiophene/aromatics. Even in a harsh operation condition of water presence in oil, MIL-47(2V/Cr)-Br maintains its superior capacity, exceeding all the reported works so far as we know. More significantly, the continue flow desulfurization from the commercial oil further demonstrate the advantages of bimetallic MOF in the practical adsorptive desulfurization, which may pave a way for understanding and designing novel hetero-metallic sorbents for adsorption and separation.

Adsorption performance of calcined coal gangue for ethyl mercaptan

ABSTRACT The modified coal gangue with different structures were used as the adsorbents which were prepared via the calcination process with the different temperature, time and atmosphere. The calcined coal gangues were characterized by XRD, FT-IR, TGA, SEM-Mapping, EDS, nitrogen adsorption-desorption isotherms and XPS. The adsorption performance of calcined coal gangue was evaluated via the adsorption of ethyl mercaptan in methane gas. The results show that the internal structures of coal gangue are affected by the calcination temperature and calcination time. The main components in the coal gangue are changed from kaolin to amorphous metakaolin, and the adsorption activity of coal gangue is greatly improved. The carbon content, especially the content of functional groups C-O and C=O in the coal gangue is changed in the difference of calcination atmosphere. When the calcination temperature, time and air content are set at 600°C, 3 h and 0.1 respectively, the breakthrough adsorption capacity of calcined coal gangue for ethyl mercaptan is 39.32 mg·g−1. The coal gangue modified by a simple calcination method has strong adsorption desulfurization performance and this is a typical example of treating waste by waste.

Adsorption desulfurization over porous carbons derived from ZIF-67 and AC

The ZIF/AC materials, produced from trace amounts of zeolite imidazole skeleton ZIF-67 loaded onto commercial activated carbon (AC) particles and subsequently calcined for 6 ​h at a series of temperatures, exhibit highly dispersed Co and N on its surface, especially showing the same specific surface area as the original activated carbon at 800 ​°C (Co/AC-800). The adsorption desulfurization performance of Co/AC-800 for dibenzothiophene (DBT) is better than that of the two matrix materials and still the same after 5 cycles, which is mainly ascribed to the acid-base interaction, π-π interaction and further demonstrated by the quasi-second-order kinetics and Langmuir model.

Facile fabrication of efficient Cu(I)–Y zeolite adsorbent towards the adsorption desulfurization

Herein, we fabricate cuprous oxides within the pores of zeolite Y by the ion exchange and liquid reduction (LR) strategy combined with the confined effect of micropores. First, Cu2+ ions are incorporated into the pores of zeolite Y through ion exchange, and then part of Cu2+ ions within the pores of zeolite Y are reduced to cuprous oxide by using sodium borohydride as reducing agent. As-fabricated cuprous oxides within the confined pore of zeolite Y (Cu(I)–Y) adsorbent exhibits excellent adsorption desulfurization performance such as large breakthrough adsorption sulfur capacity of DBT (20.0 mg S g−1) and superior regeneration (15 cycles). The outstanding adsorption desulfurization performance could be attributed to the unique pore structure, proper pore sizes and π-complexation interaction between Cu(I) sites and aromatic sulfur compounds such as DBT and TP. Besides, the confined effect of pore for Cu(I)–Y also plays an important role in stabilizing Cu(I) sites in the micropores. This facile fabrication strategy combined with the size and confined effect of micropore for Cu(I)-zeolite adsorbent provides a new way for the composite of porous materials with various active sites.

Construction of rational defective CPO-27-Ni using N, N-dimethyloctadecylamine as template towards enhanced adsorptive desulfurization from fuel

Deep desulfurization from fuel has gradually become a research hotspot with enhancing requirements of environmental protection. CPO-27-Ni was considered as one of promising adsorbents towards adsorption desulfurization by virtue of its prodigious high pore volume and high specific surface area. However, the dominant microporous channels in traditional CPO-27-Ni hinder the diffusion of thiophene sulfide and its derivatives with relatively large molecular size, which limits its desulfurization efficiency. Herein, we proposed a strategy to reasonably construct defective CPO-27-Ni with micro-mesoporous structure using N, N-dimethyloctadecylamine (DMA18) as a template, aim at improving the diffusion efficiency by introducing meso-pores. Different amounts of DMA18 were introduced to synthesize defective CPO-27-Ni (DMA18-C-X) by solvothermal method, and DMA18-C-0.5 (the mole ratio of added DMA18 to Ni2+ was 0.5) exhibited a satisfactory desulfurization performance. The dynamic breakthrough adsorption capacities of dibenzothiophene, benzothiophene and thiophene over the DMA18-C-0.5 were remarkably promoted, which were as high 3.79, 6.45 and 9.29 times as the traditional CPO-27-Ni, respectively. The crystal structure of CPO-27-Ni was not altered after adding template agent DMA18, while a uniform distribution of mesopores appeared. The largest mesopore attained a size of 2.8 nm, which effectively promoted the full exposure of more unsaturated Ni2+ active sites and enhanced the interaction between Ni2+ active sites and sulfides, resulting in strengthened adsorption desulfurization performance. This method of introducing proper defects to construct mesopores in MOFs provides some useful references for preparing high-efficiency desulfurization adsorbents.

Construction of novel super microporous silica adsorbents using pluronic triblock copolymer as template towards desulfurization from fuel

As an efficient fuel purification technique, adsorption desulphurization has attracted wide attention. Silicon oxide has been verified as a promising candidate for adsorption desulfurization reagent due to the advantages of stable structure, inexpensiveness and accessibility. However, its adsorption desulfurization performance is always weakened by the limited pore channel size leading to pore diffusion resistance over the traditional microporous silicon oxide, and it suffers from the poor shape selectivity of mesoporous silicon oxide as well. In this work, we successfully prepared a novel super microporous silica material (SMS) with a unique bimodal micro-mesoporous pore size distribution mainly around 1.2 nm, 1.6 nm and 1.8 ∼ 3.5 nm, using a pluronic triblock copolymer with approximately an average molecular weight of 3858 as template by hydrothermal synthesis. The SMS possessed the characteristics of Ia3d cubic phase and super microporous as well as mesoporous silica structure, according to the X-ray diffraction characterization as well as nitrogen adsorption isotherms. The SMS could effectively reduce the diffusion resistance and exhibit improved shape selectivity compared to microporous or mesoporous silicon oxide, respectively, by virtue of its bimodal micro-mesoporous pore size distribution. Under an optimized crystallization temperature of 100 °C for 24 h, the as-synthesized SMS displayed a notable desulfurization performance with a breakthrough capacity of 0.122 mmol S/g benzothiophene, which was significantly superior to that of traditional mesoporous silica KIT-6 (0.04 mmol S/g). Furthermore, the desulfurization performance of SMS adsorbent was not significantly reduced after three cycles of regeneration. The SMS exhibited high desulfurization capacity, easy regeneration and satisfactory regeneration performance, and it could be applied in adsorptive desulfurization technology.