STUDIES OF CO DESORPTION AND REACTION WITH H-2 ON ALUMINA-SUPPORTED RU

被引:133
作者
LOW, GG
BELL, AT
机构
[1] UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,DIV MAT & MOLEC RES,BERKELEY,CA 94720
[2] UNIV CALIF BERKELEY,DEPT CHEM ENGN,BERKELEY,CA 94720
关键词
D O I
10.1016/0021-9517(79)90006-X
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 temperature-programmed desorption (TPD) of CO and temperature-programmed reaction (TPR) of chemisorbed CO in H2 have been studied on a Ru Al2O3 catalyst. Adsorption at 303 K occurs molecularly and leads to the observation of two peaks in the TPD spectrum. The activation energies associated with these peaks are 27 and 37 kcal/mole. Upon heating above 415 K CO disproportionation takes place, forming CO2 and carbon. The carbon deposited on the catalyst surface readily reacts with H2 at 303 K to produce methane and ethane. These products are also formed during TPR of chemisorbed CO. The mechanism of CO disproportionation, the effect of surface carbon on the bonding of chemisorbed CO, and the reactions of chemisorbed CO with H2 are discussed. © 1979.
引用
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页码:397 / 405
页数:9
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