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微生物还原制备高分散度负载型钯催化剂
Authors
傅锦坤
刘月英
+3 more
周朝晖
李仁忠
林种玉
Publication date
18 April 2000
Publisher
Abstract
用地衣形芽孢杆菌 ( Bacillus licheniformis) R0 8菌体还原、制备高分散度负载型钯催化剂。透射电镜观察表明 ,R0 8菌体能够吸附还原 Pd2 +成 Pd0 颗粒。IR谱分析发现 ,细胞壁上的 - COO- 和 - HPO42 - 基团可能与菌体吸附 Pd2 +的过程有关。XPS测定结果表明 ,在载体 γ- Al2 O3上的 Pd2 +离子被 R0 8菌体还原成 Pd0。所形成的 Pd0 γ- Al2 O3催化剂经加热处理后 ,载体 γ- Al2 O3上的 Pd0 颗粒高度分散 ,其平均粒径为 5nm。该催化剂能够高效地催化一氧化碳的氧化反应
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Last time updated on 10/06/2020