LIGHT-INDUCED DECOMPOSITION OF SATURATED CARBOXYLIC-ACIDS ON IRON-OXIDE INCORPORATED CLAY SUSPENDED IN AQUEOUS-SOLUTIONS

被引：68
|
作者：
MIYOSHI, H
MORI, H
YONEYAMA, H
机构：
[1] OSAKA UNIV,FAC ENGN,DEPT APPL CHEM,YAMADAOKA 2-1,SUITA,OSAKA 565,JAPAN
[2] OSAKA UNIV,ULTRA HIGH VOLTAGE ELECTRON MICROSCOPY RES CTR,SUITA,OSAKA 565,JAPAN
来源：
LANGMUIR | 1991年 / 7卷 / 03期
关键词：
D O I：
10.1021/la00051a015
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Iron oxide prepared in sodium montmorillonite clay supports exhibited remarkable activities as photocatalysts for the decomposition of acetic acid, propionic acid, and n-butyric acid, being in marked contrast to alpha-ferric oxide bulk powder. The activities were greatly dependent on solution pH, and the highest activity was observed at a specified pH. The charged conditions of the photocatalysts were analyzed as a function of pH, based on potentiometric titration data of photocatalyst suspensions, and adsorption of acetate was evaluated to discuss the observed pH dependence. Slight reduction of the photocatalyst surfaces was noticed during the course of the decarboxylation reactions as in the cases of other iron oxide photocatalysts.
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页码：503 / 507
页数：5
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