In situ XAFS studies on the effects of the hydrophobic-hydrophilic properties of Ti-Beta zeolites in the photocatalytic reduction of CO2 with H2O

被引：86

作者：

Yamashita, H ^{[1
]}

Ikeue, K

Takewaki, T

Anpo, M

机构：

[1] Osaka Prefecture Univ, Grad Sch Engn, Dept Appl Chem, Osaka 5998531, Japan

[2] Mitsubishi Chem Corp, Yokohama Res Ctr, Aoba Ku, Yokohama, Kanagawa 2278502, Japan

来源：

TOPICS IN CATALYSIS | 2002年 / 18卷 / 1-2期

关键词：

photocatalysis; Ti-Beta zeolite; reduction of CO2 with H2O; in situ XAFS; hydrophobic-hydrophilic properties;

D O I：

10.1023/A:1013853618581

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The photocatalytic reduction of CO2 with H2O to produce CH4 and CH3OH was found to proceed in the gas phase at 323 K with different reactivities and selectivities on hydrophilic Ti-Beta(OH) and hydrophobic Ti-Beta(F) zeolites prepared in the OH- and F- media, respectively. In situ XAFS measurements have revealed that these differences are attributed to the differences in the affinity for the adsorption of H2O molecules on the highly dispersed tetrahedrally coordinated titanium oxide species depending on the hydrophobic-hydrophilic properties of zeolites.

引用

页码：95 / 100

页数：6

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