Effect of metallic cobalt particles size on occurrence of CO disproportionation. Role of fluidized metallic cobalt-carbon solution in carbon nanotube formation

被引：22

作者：

Khassin, AA ^{[1
]}

Yurieva, TM ^{[1
]}

Zaikovskii, VI ^{[1
]}

Parmon, VN ^{[1
]}

机构：

[1] Boreskov Inst Catalysis, Novosibirsk 630090, Russia

来源：

REACTION KINETICS AND CATALYSIS LETTERS | 1998年 / 64卷 / 01期

关键词：

carbon monoxide; disproportionation; cobalt; carbon nanotubes; fluidization;

D O I：

10.1007/BF02475371

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：

The behavior of Co-MgO catalysts in the reaction of CO disproportionation was studied in the temperature range up to 800 degrees C. Two temperature regions that differ by the morphology of graphite produced ("egg-shells" or nanotubes) were detected. The experimental data obtained were analyzed in terms of the phase equilibria "amorphous carbon" - "carbon solution in metallic Co" and "graphite" - "carbon solution in metallic Co". Under certain assumptions, the Co degrees particles are considered to dissolve amorphous carbon under the reaction conditions and transform to oversaturated fluidized carbon-cobalt solution, these fluidized particles being responsible for the formation of carbon nanotubes.

引用

页码：63 / 71

页数：9

共 9 条

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[2]

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[3]

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[4]

KRIVORUCHKO OP, 1993, DOKL AKAD NAUK+, V329, P744