CATALYTIC PERFORMANCE TESTS AND DEACTIVATION BEHAVIOR OF NI-W/AL2O3 CATALYSTS DEVELOPED FOR UPGRADING COAL-DERIVED LIQUIDS

被引：12

作者：

KAMEOKA, T

YANASE, H

NISHIJIMA, A

SATO, T

YOSHIMURA, Y

SHIMADA, H

MATSUBAYASHI, N

机构：

[1] NATL INST MAT & CHEM RES,TSUKUBA,IBARAKI 305,JAPAN

[2] CATALYST & CHEM IND CO LTD,TOKYO 100,JAPAN

来源：

APPLIED CATALYSIS A-GENERAL | 1995年 / 123卷 / 02期

关键词：

CATALYST CHARACTERIZATION (EXAFS/TEM); DEACTIVATION; EXTENDED X-RAY ABSORPTION FINE STRUCTURE; NICKEL-TUNGSTEN; PERFORMANCE; TRANSMISSION ELECTRON MICROSCOPY;

D O I：

10.1016/0926-860X(94)00244-4

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A NI-W catalyst designed and developed for upgrading coal-derived liquids was used in 500 and 1000 h catalyst performance rests using coal-derived kerosene and gas oil, respectively. The catalyst showed considerable improvement in hydrodenitrogenation (HDN) and hydrogenation (HY) activities and less initial deactivation as compared to commercial catalysts. The catalysts used for the catalyst performance tests were characterized to clarify catalyst deactivation behavior. Precise characterization of the used catalysts by means of X-ray photoelectron spectroscopy, X-ray absorption fine structure (EXAFS and XANES), and transmission electron microscopy revealed that crystal growth of WS2-like structures and changes in the sulfided states and in the local structure of tungsten on the catalysts occurred during the upgrading reaction. These findings gave new insights for improving catalytic activity and the life of the newly developed catalyst.

引用

页码：217 / 228

页数：12

共 8 条

[1] Topsoe, Clausen, Appl. Catal., 17, (1986)
[2] Ledoux, Michaux, Agostini, Panissod, J. Catal., 96, (1985)
[3] Craje, Louwers, de Beer, Prins, van der Kraan, An EXAFS study on the so-called "cobalt-molybdenum-sulfur" phase in cobalt/carbon and cobalt-molybdenum/carbon, compared with a Moessbauer emission spectroscopy study, The Journal of Physical Chemistry, 96, (1992)
[4] Nishijima, Shimada, Yoshimura, Sato, Matsubayashi, Stud. Surf. Sci. Catal., 34, (1987)
[5] Nishijima, Yoshitomi, Sato, Yoshimura, Shimada, Matsubayashi, Gamas, Proc. Intern. Conf. Coal Science, (1987)
[6] Shimada, Kameoka, Yanase, Watanabe, Kinoshita, Sato, Yoshimura, Matsubayashi, Nishijima, Stud. Surf. Sci. Catal., 75, (1992)
[7] Nishijima, Shimada, Sato, Yoshimura, Matsubayashi, Kameoka, Control of hydrogenation and hydrocracking activities of molybdenum sulfide catalysts supported on alumina. Effect of preparation condition of alumina on functionalities of catalysts., Journal of The Japan Petroleum Institute, 31, (1988)
[8] Louwers, Prins, Ni and W EXAFS of Ni-WS2/C Hydrotreating Catalysts, Japanese Journal of Applied Physics, 32, (1993)

← 1 →