HYDROGEN CONTROL OF CARBON DEPOSIT MORPHOLOGY

被引:108
作者
NOLAN, PE [1 ]
SCHABEL, MJ [1 ]
LYNCH, DC [1 ]
CUTLER, AH [1 ]
机构
[1] MINERVA LABS,TUCSON,AZ 85719
关键词
NI; CATALYST; CARBON MORPHOLOGY; CO DISPROPORTIONATION; NANOTUBES;
D O I
10.1016/0008-6223(94)00122-G
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
Carbon deposit morphology during catalytic disproportionation of CO is dependent on a number of variables. Hydrogen has a significant effect on the form of carbon deposited. It is proposed that the effect of hydrogen is to cause (or allow) open forms of carbon such as filaments to be produced. Hydrogen atoms serve to satisfy valences at the free edges of graphite planes. Without hydrogen, carbon will deposit in closed forms such as shells and nanotubes.
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页码:79 / 85
页数:7
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