Infrared study of benzene hydrogenation on Pt/SiO2 catalyst by co-adsorption of CO and benzene

被引：11
|
作者：
Chen, CS
Lin, JH
Chen, HW
Wang, CY
机构：
[1] Chang Gung Univ, Ctr Gen Educ, Taoyuan 33302, Taiwan
[2] Tzu Hui Inst Technol, Ctr Res & Technol, Nanjou Shiang 92641, Ping Tung, Taiwan
[3] Natl Sun Yat Sen Univ, Dept Chem, Kaohsiung 80424, Taiwan
来源：
CATALYSIS LETTERS | 2005年 / 105卷 / 3-4期
关键词：
benzene hydrogenation; CO adsorption; FTIR; Pt/SiO2;
D O I：
10.1007/s10562-005-8684-7
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：
FT-IR spectra of the co-adsorption of benzene and CO have been performed to identify the preferred adsorption sites of hydrogen and benzene on a Pt/SiO2 catalyst for hydrogenation of benzene. Results of CO adsorbed on atop sites on Pt/SiO2 includes: an alpha peak at 2091 cm(-1), a beta peak at 2080 cm(-1) and a gamma peak at 2067 cm(-1) indicating three kinds of adsorption sites for dissociative hydrogen on Pt/SiO2. The site of lowest CO stretching frequency offers stronger adsorbates-metal interaction for benzene and hydrogen. Hydrogen binding on the site of lowest CO stretching frequency before benzene adsorption significantly enhances the reaction rate of benzene hydrogenation.
引用
收藏
页码：149 / 155
页数：7
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