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Effect of Reduction Temperature on Hydrofining Performance of Supported Molybdenum Phosphide Catalyst

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Journal of Natural Gas Chemistry 2005年第4期14卷 233-237页

作者： Fengyan Li Zhifang Zhao Qingjie Li Tianbo Zhao Cuiqing Li Guida Sun Department of Applied Chemistry Beijing Institute of Petrochemical Technology Beijing 102617 China School of Science Beijing Institute of Technology Beijing 100081 China

A series of supported molybdenum phosphide catalysts were prepared by impregnation method. XRD, TG-DTG, XPS and BET were used to study the phase, compositions and surface areas of the prepared catalysts. A model reactant containing thiophene, pyridine and cyclohexene was used for the measurements of catalytic activities. The effect of reduction temperature on catalytic activities was investigated. The analysis results by XRD and BET are very different when the reduction temperature is changed from 400 to 900 ℃. MoP/γ-Al2O3 catalysts and CoMoP/γ-Al2O3 catalysts prepared at the reduction temperature of 500 ℃ are the most active ones.

关键词： molybdenum phosphide reduction temperature hydrodenitrogenation hydrodesulfurization supported catalyst

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镍钼杂多酸制备NiMo/γ-Al_2O_3催化剂及硼、钴或镍改性氧化铝的影响(英文)

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催化学报 2012年第6期33卷 952-961页

作者： Radostina PALCHEVA Luděk KALUZA Alla SPOJAKINA Květue JIRTOV Georgi TYULIEV Institute of Catalysis Bulgarian Academy of SciencesG.Bonchev str.bldg.111113 SofiaBulgaria Institute of Chemical Process Fundamentals of the Academy of Sciences of the Czech Republic v.v.i.165 02 Prague 6Czech Republic

A hydrotreating NiMo/γ-Al2O3 catalyst(12 wt% Mo and 1.1 wt% Ni) was prepared by impregnation of the support with the Anderson-type heteropolyoxomolybdate(NH4)4Ni(OH)6Mo6O18.Before impregnation of the support,it was modified with an aqueous solution of H3BO3,Co(NO3)2,or Ni(NO3)2.The catalysts were investigated using N2 adsorption,O2 chemisorption,X-ray diffraction,UV-Vis spectroscopy,Fourier transform infrared spectroscopy,temperature-programmed reduction,temperature-programmed desorption,and X-ray photoelectron spectroscopy.The addition of Co,Ni,or B influenced the Al2O3 phase composition and gave increased catalytic activity for 1-benzothiophene hydrodesulfurization(HDS).X-ray photoelectron spectroscopy confirmed that the prior loading of Ni,Co or B increased the degree of sulfidation of the NiMo/γ-Al2O3 catalysts.The highest HDS activity was observed with the NiMo/γ-Al2O3 catalyst with prior loaded Ni.

关键词： nickel cobalt boron nickel heteropolyoxomolybdate hydrodesulfurization

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DETECTION OF SULFHYDRYL GROUPS ON SULFIDED MOLYBDENUM BASED CATALYSTS BY THE REACTION OF THIOLATION OF CYCLOPENTANONE

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Chinese Journal of Catalysis 1997年第3期 2-3页

作者： Wang Jun, Li Wenzhao * (Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023) Guy Perot, Jean Louis Lemberton (Laboratoire de Catalyse en Chimie Organique, URA CNRS 350, Universite de Poitiers, 40 Avenue du Recteur Pine

ＤＥＴＥＣＴＩＯＮＯＦＳＵＬＦＨＹＤＲＹＬＧＲＯＵＰＳＯＮＳＵＬＦＩＤＥＤＭＯＬＹＢＤＥＮＵＭＢＡＳＥＤＣＡＴＡＬＹＳＴＳＢＹＴＨＥＲＥＡＣＴＩＯＮＯＦＴＨＩＯＬＡＴＩＯＮＯＦＣＹＣＬＯＰＥＮＴＡＮＯＮＥＷａｎｇＪｕ... 详细信息

ＤＥＴＥＣＴＩＯＮＯＦＳＵＬＦＨＹＤＲＹＬＧＲＯＵＰＳＯＮＳＵＬＦＩＤＥＤＭＯＬＹＢＤＥＮＵＭＢＡＳＥＤＣＡＴＡＬＹＳＴＳＢＹＴＨＥＲＥＡＣＴＩＯＮＯＦＴＨＩＯＬＡＴＩＯＮＯＦＣＹＣＬＯＰＥＮＴＡＮＯＮＥＷａｎｇＪｕｎ，ＬｉＷｅｎｚｈａｏ＊（Ｄａｌｉ...

关键词： Sulfhydryl hydrodesulfurization Cyclopentanone Thiolation

通过噻吩吸附制备可控表面形貌的MoS_2及其HDS和HER催化活性研究（英文）

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Science China Materials 2016年第12期59卷 1051-1061页

作者：刘思嘉张鑫张傑雷志刚梁鑫陈标华 State Key Laboratory of Chemical Resource Engineering Beijing University of Chemical TechnologyBeijing 100029China

本文报道了一种通过简单水热合成反应,以噻吩作为导向剂,诱导合成具有较大比表面积和更多活性位点的MoS_2催化剂的方法.相比于普通MoS_2,添加噻吩合成的MoS_2,特别是添加200μL噻吩的MoS_2,其特殊的表面结构使得其具有较大比表面积和更... 详细信息

本文报道了一种通过简单水热合成反应,以噻吩作为导向剂,诱导合成具有较大比表面积和更多活性位点的MoS_2催化剂的方法.相比于普通MoS_2,添加噻吩合成的MoS_2,特别是添加200μL噻吩的MoS_2,其特殊的表面结构使得其具有较大比表面积和更多活性位点,因而其对于加氢脱硫反应和析氢反应都具有更好的催化活性.本工作提供了一种有效制备高活性MoS_2催化剂的方法,同时也为调控类似MoS_2的层状结构材料提供了思路.

关键词： MoS2 catalyst hydrodesulfurization hydrogen evolution reaction

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Experimental and Theoretical Properties of MoS<sub>2+x</sub>Nanoplatelets

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Modern Research in Catalysis 2013年第4期2卷 164-171页

作者： D. H. Galvan A. Posada Amarillas N. Elizondo M. José-Yacamán Departamento de Investigación en Física Universidad de Sonora Hermosillo México Department of Chemical Engineering and International Center for Nanotechnology & Advanced Materials University of Texas at Austin Austin USA Department of Physics and Astronomy University of Texas at San Antonio One UTSA Circle San Antonio USA On Sabbatical from Centro de Nanociencias y Nanotecnología Universidad Nacional Autónoma de México Ensenada México

The synthesis and the catalysis in the HDS of DBT reaction of nanostructured self-supported catalyst containing MoS2+x nanoplatelets have been investigated. Enhancement of higher activity observed in sulfide catalyst sample (d) with respect to the ex situ and in situ references is more closely related to the morphology change of particles (nanoplatelets). In this work, we suggest that certain structures present in model catalysts maybe related to low dimensional structures and present a theoretical study of two MoS2 clusters (one made of 34 atoms/cluster and the second one made of 41 atoms/cluster), to these clusters seven sulfur atoms were randomly located at the surface of the sulfur layer, in order to simulate certain structures resembling arrow shaped nanoplatelets that were found in a High Resolution TEM analysis performed in some MoS2 samples. Additionally, one of the goals is to enquire about the electronic properties presented in such structures when the clusters terminated as Moor S-edge and if it could be correlated to the catalyst behavior of these compounds. To the 34 atoms/cluster Mo-edge yielded metallic behavior while the second cluster the 41 atoms/ cluster S-edge yielded a semiconductor behavior with a forbidden energy gap Eg of the order of @ 3.6 eV between the Valence and Conductions bands respectively. Moreover, to the same clusters enunciated formerly, when the sulfur atoms were located at the surface of the S-layer, for the first cluster (34 atoms/cluster) yielded a more metallic behavior, while the second one (41 atoms/cluster) yielded an isolator behavior. Our results agree with the experimental and theoretical results presented by several groups in different laboratories arriving to the conclusion that the S-Mo-S Mo-edge arrow heads structures could be responsible to the enhancement of the catalytic activity on the MoS2 studied samples.

关键词： hydrodesulfurization Tight-Binding Catalyst Tem Clusters

Preparation of the Natural Zeolite Based Catalyst for Hydrocracking Process of Petroleum Derived Atmospheric Residue

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Journal of Materials Science and Chemical Engineering 2017年第11期5卷 14-22页

作者： Tserendorj Tugsuu Yoshikazu Sugimoto Byambajav Enkhsaruul Department of Chemical and Biological Engineering School of Engineering and Applied Science National University of Mongolia (NUM) Ulaanbaatar Mongolia Energy Technology Research Institute Advanced Industrial Science and Technology (AIST) Tsukuba Japan Department of Chemistry School of Art and Science National University of Mongolia (NUM) Ulaanbaatar Mongolia

This research focused on preparation catalysts by natural zeolite for hydrocracking and to compare their catalytic reactivity with commercial catalyst. Clinoptilolite type natural zeolite of Tsagaantsav and paraffinic atmospheric residue of Tamsagbulag crude oil were used in this research. The Ni or Fe ion was loaded into the zeolite sample which was enriched and calcined previously, by ion exchange method. It is determined by X-ray diffraction analysis that structure of natural zeolite was not broken down during metal loading. The conversion of feedstock in hydrocracking, in with modified zeolite was used, was 22.5% higher than none catalytic process and 8.9% higher than commercial catalyst. It is proved that both of modified zeolite catalysts worked effectively as a catalyst in hydrocracking of atmospheric residue. Even so the contents of sulfur in middle and heavy fraction were 490 - 615 ppm, after hydrocracking with Ni/zeolite, Fe/zeolite catalysts. This result showed that the Ni/zeolite, Fe/zeolite catalysts were inactive at hydrodesulfurization, because the contents of sulfur in middle and heavy fraction were 370 - 478 ppmafter hydrocracking without catalyst. Process for sulfur removal is needed after hydrocracking with Ni/zeolite orFe/zeolite catalyst.

关键词： Zeolite Catalyst Hydrocracking Catalytic Reactivity hydrodesulfurization

铂对硫芴加氢脱硫钼催化剂的促进作用(英文)

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Chinese Journal of Catalysis 1997年第2期18卷 2-3页

作者：王军李文钊张盈珍中科院大连化学物理所辽宁大连 Universite de Poitiers 法国

铂对硫芴加氢脱硫钼催化剂的促进作用王军李文钊张盈珍ＴＨＥＰＲＯＭＯＴＩＯＮＥＦＦＥＣＴＯＦＰＬＡＴＩＮＵＭＯＮＭＯＬＹＢＤＥＮＵＭＣＡＴＡＬＹＳＴＦＯＲＨＹＤＲＯＤＥＳＵＬＦＵＲＩＺＡＴＩＯＮＯＦＤＩＢＥＮＺＯＴＨＩ... 详细信息

铂对硫芴加氢脱硫钼催化剂的促进作用王军李文钊张盈珍ＴＨＥＰＲＯＭＯＴＩＯＮＥＦＦＥＣＴＯＦＰＬＡＴＩＮＵＭＯＮＭＯＬＹＢＤＥＮＵＭＣＡＴＡＬＹＳＴＦＯＲＨＹＤＲＯＤＥＳＵＬＦＵＲＩＺＡＴＩＯＮＯＦＤＩＢＥＮＺＯＴＨＩＯＰＨＥＮＥＷａｎｇＪｕｎ，ＬｉＷ...

关键词： hydrodesulfurization dibenzothiophene Platinum Molybdenum Alumina supported catalyst

原子精确的Ni6S12催化剂催化噻吩加氢脱硫（英文）

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原子精确的Ni6S12催化剂催化噻吩加氢脱硫（英文）