STABILITY OF THE SO-CALLED CO-MO-S PHASE IN A CARBON-SUPPORTED CO-MO SULFIDE CATALYST AT VERY LOW CO/MO RATIO

被引：6

作者：

CRAJE, MWJ ^{[1
]}

GERKEMA, E ^{[1
]}

DEBEER, VHJ ^{[1
]}

VANDERKRAAN, AM ^{[1
]}

机构：

[1] EINDHOVEN UNIV TECHNOL,INORGAN CHEM & CATALYSIS LAB,5600 MB EINDHOVEN,NETHERLANDS

来源：

HYPERFINE INTERACTIONS | 1990年 / 57卷 / 1-4期

关键词：

D O I：

10.1007/BF02405724

中图分类号：

O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];

学科分类号：

070203 ; 070304 ; 081704 ; 1406 ;

摘要：

Several aspects of the stability of the so-called "Co-Mo-S" phase in a fully sulfided Co(0.04)Mo(6.84)/C (wt%) catalyst have been examined by Mössbauer emission spectroscopy. The "Co-Mo-S" parameters turned out to be unchanged when the catalyst is exposed for 23 days to ambient air at room temperature. However, if this exposure to air is extended for over 100 days, the so-called "Co-Mo-S" phase was found to be oxidized to a high-spin Fe2+ phase which has no strong interaction with the "MoS2" particles. After resulfidation of the catalyst the so-called "Co-Mo-S" phase is formed again. © 1990 J.C. Baltzer A.G. Scientific Publishing Company.

引用

页码：1795 / 1800

页数：6

共 7 条

[1]

CANDIA R, 1984, 9TH P IB S CAT LISB, P211

[2]

Clausen B.S., 1976, J PHYS C SOLID STATE, V37, P249

[3]

CRAJE MWJ, IN PRESS

[4] ACTIVE-SITES AND SUPPORT EFFECTS IN HYDRODESULFURIZATION CATALYSTS [J].

TOPSOE, H ;

CLAUSEN, BS .

APPLIED CATALYSIS, 1986, 25 (1-2) :273-293

[5] SO-CALLED CO-MO-S PHASE OBSERVED IN CARBON-SUPPORTED COBALT SULFIDE CATALYST BY MOSSBAUER EMISSION-SPECTROSCOPY [J].

VANDERKRAAN, AM ;

CRAJE, MWJ ;

GERKEMA, E ;

RAMSELAAR, WLTM ;

DEBEER, VHJ .

APPLIED CATALYSIS, 1988, 39 (1-2) :L7-L10

[6] SO-CALLED CO-MO-S PHASE OBSERVED IN CARBON-SUPPORTED CO AND CO-MO SULFIDE CATALYSTS BY MOSSBAUER EMISSION-SPECTROSCOPY [J].

VANDERKRAAN, AM ;

CRAJE, MWJ ;

GERKEMA, E ;

RAMSELAAR, WLTM ;

DEBEER, VHJ .

HYPERFINE INTERACTIONS, 1989, 46 (1-4) :567-574

[7] MOSSBAUER-SPECTROSCOPY OF SMALL GOLD PARTICLES [J].

VIEGERS, MPA ;

TROOSTER, JM .

PHYSICAL REVIEW B, 1977, 15 (01) :72-83

← 1 →