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《Chinese Journal of Catalysis》 1987-03
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IN-SITU LASER RAMAN SPECTROSCOPIC STUDY ON THE ACTIVE PHASES AND CHEMICAL STATES OF SULFIDIZED Ni-W/γ-Al_2O_3 CATALYST

Yang Xian-chun and Zhang Xin-wei (Research Institute of Petroleum Processing, P. O. Box 914, Beijing)  
Laser Raman technique is highly sensitive to the analysis and determination of surface composition and structure of tungsten catalyst. In this paper, the conversion of oxidized state to sulfidized state of Ni-W/r-Al2O3 catalyst was studied by in-situ Raman spectroscopy combined with Auger spectroscopy and ESCA. The chemical states of the same tungsten compounds under different sulfuration conditions were studied. Ammonium metatungstate is easier to be sulfidized to WS2;H2WO4 is first dehydrated to WO3 and then converted to oxysulfurtungstate, but no pure WS2 is observed; WO3- is very hard to be sulfidized. The activity for hydrodenitrogenation of Ni-W/r-Al2O3 catalyst with different tungsten loadings and commercial Ni-W/r-Al2O3 catalyst under various sulfuration conditions was determined in a bench-scale unit. Both oxysulfurtungstate and WS2 are tentatively suggested as the active components in the catalytic hydrodenitrogenation process.
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【References】
Chinese Journal Full-text Database 1 Hits
1 Zhu Jianjun Lin Xiping(Department of Chemical Engineering, Jiangsu Institute of Petro-chemical Technology, Changzhou 213016);STUDIES ON STATES OF ACTIVE AGENTS OF NiO-WO_3/F-Al_2O_3-SiO_2 CATALYST[J];Acta Petrolei Sinica (Petroleum Processing Section);1996-04
【Citations】
Chinese Journal Full-text Database 2 Hits
1 Yang Xian-chun, Cui Jian-wen and Li Da-dong (Research Institute of Petroleum Processing, P. O. Box 914, Beijing);LASER RAMAN SPECTROSCOPIC STUDY OF THE CHEMICAL BEHAVIOR OF NO_3~- ION IN THE IMPREGNATION SOLUTION AND ITS EFFECT ON THE STRUCTURE AND HDN ACTIVITY OF WO_3/γ-Al_2O_3[J];Chinese Journal of Catalysis;1987-01
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【Co-citations】
Chinese Journal Full-text Database 7 Hits
1 LIANG Jun-fang~(1)(1.Department of Chemistry,Jiaying University,Meizhou 514015 China);Studies on Dispersion State and Catalytic Activities of WO_(3)/(TiO_(2)-SiO_(2))[J];Journal of Molecular Catalysis;2006-05
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5 Yang Xianchun (Research Institute of Petroleum Processing);STUDY OF SULFIDING CATALYSTS BY IN SITU LASER RAMAN SPECTROSCOPY Ⅱ. THE CHEMICAL STATE AND CHARACTERIZATION OF SURFACE SPECTROSCOPIC PROPERTIES OF ACTIVATED PHASE ON W/γ-Al_2O_3 CATALYST[J];Acta Petrolei Sinica(Petroleum Processing Section);1987-04
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【Co-references】
Chinese Journal Full-text Database 10 Hits
1 Luo Xi-hui, Sun Wan-fu, Song Chun-fan and Li Ting-yu (Fushun Research Institute of Petroleum and Petrochemicals);STUDIES OF WO_3/γ-ALUMINA SYSTEM BY USING PASCA AND MAGNETIC MEASUREMENTS[J];Chinese Journal of Catalysis;1990-02
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【Secondary References】
Chinese Journal Full-text Database 1 Hits
1 ZHANG Quan xin,LIU Xi yao (Research Institute of Yanshan Petrochemical Corp,Beijing 102550,China);Hydrocracking of polycyclic aromatic hydrocarbons[J];Gongye Cuihua (Industrial Catalysis);2001-02
【Secondary Citations】
Chinese Journal Full-text Database 2 Hits
1 Li Dadong, Zhuang Fucheng, Sun Lianxia and Xu Xiaoluo(Research Institute of Petroleum Protessing, Beijing);THE EFFECT OF METHOD OF PREPARATION OF NiO-WO_3/Al_2O_3 CATALYSTS UPON THE INTERACTION OF NiO WITH Al_2O_3 AND THE PYRIDINE HYDROGENATION ACTIVITY[J];Chinese Journal of Catalysis;1981-04
2 Yang Xian-chun, Cui Jian-wen and Li Da-donag(Research Institute of Petroleum Processing, Beijing);LASER RAMAN SPECTROSCOPIC STUDY OF Mo/TiO_2 (ANATASE) CATALYST[J];Chinese Journal of Catalysis;1984-03
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