Interaction of formic acid with Fe2O3 powders under different atmospheres:: an XPS and FTIR study

被引:38
作者
Glisenti, A [1 ]
机构
[1] Univ Padua, Dipartimento Chim Inorgan Met Organ & Analit, I-35131 Padua, Italy
来源
JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS | 1998年 / 94卷 / 24期
关键词
D O I
10.1039/a806080k
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 interaction between haematite powder and formic acid has been studied at atmospheric pressure by FTIR and under high-vacuum conditions by X-ray photoelectron spectroscopy (XPS) and mass spectroscopy (MS). At room temperature formic acid is adsorbed mainly molecularly whereas dissociative chemisorption is prevalent at higher temperatures. Heating to >500 K causes decomposition of the formate with the formation of carbon monoxide, carbon dioxide, hydrogen and water. Suggestions are made concerning the surface acid sites in connection with the chemisorption and the reaction pathway. The results obtained are compared with those previously achieved by the chemisorption of methanol on iron oxide.
引用
收藏
页码:3671 / 3676
页数:6
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