Synthesis of micro-mesoporous materials ZSM-5/FDU-12 and the performance of dibenzothiophene hydrodesulfurization

Zhang, Honglei; Han, Lupeng; Duan, Aijun; Chen, Xu; Zhao, Zhen; Wei, Yuechang; Jiang, Guiyuan; Liu, Jian; Wang, Dong; Xia, Zesheng

doi:10.1039/c7ra03679e

Cited by 33 publications

(25 citation statements)

References 54 publications

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“…FDU-12 is a type of 3D mesoporous material with a cage-like face-centered cubic mesostructure which has been attracted increasing attention as supports for HDS in recent years (Hu et al 2020;Meng et al 2018;Wu et al 2018b;Li et al 2018bLi et al , 2019Liu et al 2016Liu et al , 2017Wang et al 2017;Zhang et al 2017;Du et al 2016). For example, FDU-12based micro-and mesoporous composites (Wu et al 2018b;Li et al 2018b;Du et al 2016), Ti-or Zr-modified FDU-12 (Meng et al 2018;Cao et al 2014), etc.…”

Section: Introductionmentioning

confidence: 99%

Effects of pore size, mesostructure and aluminum modification on FDU-12 supported NiMo catalysts for hydrodesulfurization

et al. 2020

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A series of NiMo/FDU-12 catalysts with tunable pore diameters and mesostructures have been controllably synthesized by adjusting the synthetic hydrothermal temperature and applied for the hydrodesulfurization of dibenzothiophene and its derivative. The state-of-the-art electron tomography revealed that the pore sizes of FDU-12 supports were enlarged with the increase in the hydrothermal temperature and the mesostructures were transformed from ordered cage-type pores to locally disordered channels. Meanwhile, the MoS 2 morphology altered from small straight bar to semibending arc to spherical shape and finally to larger straight bar with the change of support structures. Among them, FDU-12 hydrothermally treated at 150 °C possessed appropriate pore diameter and connected pore structure and was favorable for the formation of highly active MoS 2 with curved morphology; thus, its corresponding catalyst exhibited the best HDS activity. Furthermore, it was indicated that the isomerization pathway could be significantly improved for HDS of 4,6-dimethyldibenzothiophene after the addition of aluminum, which was expected to be applied to the removal of the macromolecular sulfur compounds. Our study sheds lights on the relationship between support effect, active sites morphology and HDS performance, and also provides a guidance for the development of highly active HDS catalysts.

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Section: Introductionmentioning

confidence: 99%

Effects of pore size, mesostructure and aluminum modification on FDU-12 supported NiMo catalysts for hydrodesulfurization

et al. 2020

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“…Wang et al illustrated that a series of Ni-Mo/ZSM-5-SBA-16 composites, which synthesized by hydrothermal crystallization method, showed high TOF values of 4,6-DMDBT for HDS reaction [10]. Zhang et al concluded that NiMo/ZSM-5-FDU-12 exhibited better performance than NiMo/FDU-12 [11]. The reason for adding zeolite as a second component of the substrate is not only to increase the specific surface area of the catalysts but also to enhance the access of acidic/basic sites due to the useful role of these properties in catalytic activity [12].…”

Section: Introductionmentioning

confidence: 99%

Activity Evaluation of CoMo Nanoparticles Supported on Meso-microporous Composites in Dibenzothiophene Hydrodesulphurization

Parsafard

Peyrovi

Mohammadian

et al. 2019

Bull. Chem. React. Eng. Catal.

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CoMo-supported mesoporous catalysts were synthesized by 50 wt% of HZSM-5 and 50 wt% of FSM-16, KIT-6, and MCM-48. These catalysts were prepared by the wet-impregnation method and pre-sulfided with CS2. The catalytic performance was evaluated for HDS reaction of dibenzothiophene over a temperature range of 250-400 °C in a micro fixed-bed reactor under atmospheric pressure. The supported CoMo bimetallic catalysts were characterized by XRD, XRF, FT-IR, N2 adsorption-desorption, and SEM. The CoMo/KIT-6/HZSM-5 indicate higher activity than other catalysts at 400 °C for dibenzothiophene hydrodesulphurization. Also, the best selectivity to cyclohexylbenzene (CHB) is related to CoMo/FSM-16/HZSM-5. The activation energy was also calculated for all prepared catalysts for the conversions of less than 10%; according to which, the activation energy for CoMo/KIT-6/HZSM-5 is less than other catalysts (~21 kJ/mol) which can be related to the appropriate pore size and high surface area of the support. Copyright © 2020 BCREC Group. All rights reserved

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“…Those strategies mainly focused on modulating the composition of the active/additive components or modulating the dispersion of the modified metal components . There are also some reports that micromesoporous materials have excellent sulfur tolerance, but it has not been further studied by the mechanism of sulfur tolerance due to the limitations of traditional experimental methods.…”

Section: Introductionmentioning

confidence: 99%

Molecular simulation of hydrodesulfurization of coal tar using Pd/ZSM‐5/γ‐Al₂O₃ catalyst

Chu

Wang

Meng

et al. 2019

Asia-Pacific J Chem Eng

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In this study, all‐atom model of Pd/ZSM‐5/γ‐Al2O3 was developed and validated by comparing the experimental results of nitrogen adsorption isotherm, pore structure parameters, and powder X‐ray diffraction to our simulation results. Coal tar was simulated using dibenzothiophene (DBT), and tetralin (THN) in our study, and the product of coal tar hydrodesulfurization was modeled by H2S and n‐hexane (Hex). The adsorption and diffusion of the DBT, THN, and Hex on Pd/ZSM‐5/γ‐Al2O3 were investigated, and the simulation results were verified by differential thermogravimetric and X‐ray photoelectron spectroscopy results. The results demonstrated that DBT and THN mainly adsorbed to mesopores, and part of THN could also adsorb to micropores. Note that the mesopores allow the reactions of DBT, THN, and Hex to take place as they have large enough size, and micropores limit those reactions as those model molecules hardly adsorbed to micropores. In addition the acidity of the carrier weakens the heat of adsorption of H2S, making it easier to diffuse out of the catalyst and protect the active site. And our simulation results also show that the diffusion coefficient of H2S was much higher than other chemicals. As a consequence, the multichannel design and the choice of acidic carrier improved the sulfur tolerance of the catalyst.

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Synthesis of micro-mesoporous materials ZSM-5/FDU-12 and the performance of dibenzothiophene hydrodesulfurization

Abstract: The micro-mesoporous materials ZF-x (ZSM-5-FDU-12, x = SiO2/Al2O3) with different molar ratios of SiO2/Al2O3 were synthesized by an in situ nano-assembly method with the ZSM-5 precursor serving as the silica source.

Cited by 33 publications

References 54 publications

Effects of pore size, mesostructure and aluminum modification on FDU-12 supported NiMo catalysts for hydrodesulfurization

Effects of pore size, mesostructure and aluminum modification on FDU-12 supported NiMo catalysts for hydrodesulfurization

Activity Evaluation of CoMo Nanoparticles Supported on Meso-microporous Composites in Dibenzothiophene Hydrodesulphurization

Molecular simulation of hydrodesulfurization of coal tar using Pd/ZSM‐5/γ‐Al₂O₃ catalyst

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Synthesis of micro-mesoporous materials ZSM-5/FDU-12 and the performance of dibenzothiophene hydrodesulfurization

Abstract: The micro-mesoporous materials ZF-x (ZSM-5-FDU-12, x = SiO2/Al2O3) with different molar ratios of SiO2/Al2O3 were synthesized by an in situ nano-assembly method with the ZSM-5 precursor serving as the silica source.

Cited by 33 publications

References 54 publications

Effects of pore size, mesostructure and aluminum modification on FDU-12 supported NiMo catalysts for hydrodesulfurization

Effects of pore size, mesostructure and aluminum modification on FDU-12 supported NiMo catalysts for hydrodesulfurization

Activity Evaluation of CoMo Nanoparticles Supported on Meso-microporous Composites in Dibenzothiophene Hydrodesulphurization

Molecular simulation of hydrodesulfurization of coal tar using Pd/ZSM‐5/γ‐Al2O3 catalyst

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Molecular simulation of hydrodesulfurization of coal tar using Pd/ZSM‐5/γ‐Al₂O₃ catalyst