IMPROVED HYDROGENATION CATALYSTS FOR COAL-DERIVED LIQUIDS

被引：5

作者：

KOUSSATHANA, M

VAMVOUKA, N

VERYKIOS, X

机构：

[1] Institute of Chemical Engineering and High Temperature Chemical Processes, University of Patras

来源：

INTERNATIONAL JOURNAL OF ENERGY RESEARCH | 1994年 / 18卷 / 02期

关键词：

HYDROGENATION; CATALYSTS; BIMETALLIC; DOPING; COAL-LIQUIDS;

D O I：

10.1002/er.4440180222

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Benzene, naphthalene and biphenyl hydrogenation in a slurry-phase reactor were used as probe reactions to investigate the influence of bimetallic catalyst formulations and altervalent carrier doping on hydrogenation activity and sulphur-poisoning characteristics. It was found that addition of a secondary metal such as Pd, Ir or Re to primary metals such as Pt, Rh, or Ru, has a beneficial influence on these parameters. Significant enhancements in hydrogen adsorption capacity, hydrogenation activity and sulphur tolerance were observed when metals were dispersed on TiO2 doped with higher-valence cations. The enhancement factors were found to be a function of the dopant concentration in the carrier. Results related to altervalent carrier doping are explained in terms of long-range electronic interactions at the metal-support interface which alter the work function of surface metal atoms.

引用

页码：243 / 250

页数：8

共 10 条

[1]

Singhal G.H., Sobel J.E., Hydrodesulfurization of sulphur heterocyclic compounds’, J. Catal., 67, pp. 446-456, (1981)

[2]

Ramirez J., Fuentes S., Diaz G., Vrinat M., Breysse M., Lacroix M., Hydrodesulfurization activity and characterization of sulphided molybdenum and cobalt‐molybdenum catalysts: comparison of alumina, silica‐alumina and titania‐supported catalysts’, Appl. Catal., 52, pp. 211-224, (1989)

[3]

Ayo D.B., Susu A.A., Platinum‐rhenium/alumina catalyst: III—mechanism of C6‐ring hydrogenation/dehydrogenation reactions’, Appl. Catal., 40, pp. 1-16, (1988)

[4]

Van Der Steen P.J., Scholten J.J.F., Selectivity to cyclohexane in the gas phase hydrogenation of benzene over ruthenium, as influenced by reaction modifiers: II—Catalytic hydrogenation of benzene to cyclohexane and cyclohexene’, Appl. Catal., 58, pp. 291-304, (1990)

[5]

Ponec V., Catalysis by alloys in hydrocarbon reactions’, Adv. Catal., 32, pp. 149-159, (1983)

[6]

Sinfelt J.H., Bimetallic catalysts: discoveries, concepts and applications, (1986)

[7]

Akubuiro E.C., Verykios X.E., Dopant‐induced metal‐support interactions’. 1. Influence on chemisorptive behavior, J. Catal., 103, pp. 320-333, (1987)

[8]

Akubuiro E.C., Verykios X.E., Dopant induced metal‐support interactions’. 2. Further Characterization of Supports and Catalyst, J. Catal., 113, pp. 106-119, (1988)

[9]

Akubuiro E.C., Verykios X.E., Ioannides T., Effects of dopants on performance of metal crystallites. 3. Influence on kinetic Parameters in CO/H2 and CO/O2 Reactions, J. Catal., 116, pp. 590-594, (1989)

[10]

Sapre A.V., (1980)

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