Propylene epoxidation over biogenic Au/TS-1 catalysts by Cinnamomum camphora extract in the presence of H-2 and O-2
Propylene epoxidation over biogenic Au/TS-1 catalysts by Cinnamomum camphora extract in the presence of H-2 and O-2
复制标题
H-2 和 O-2 存在下，樟脑提取物在生物 Au/TS-1 催化剂上进行丙烯环氧化
DOI：
10.1016/j.apsusc.2016.01.086
复制
发表时间：
2016
影响因子：
6.7
通讯作者：
Huang JL
中科院分区：
文献类型：
--
作者：
Du Mingming;Huang Jiale;Sun Daohua;Li Qingbiao;Huang JL
以香樟（CC）提取物为原料，制备了尺寸为3.1 ~ 8.4 nm、负载量为0.5 wt%的Au纳米颗粒Au/TS-1催化剂，并用于丙烯环氧化反应。结果表明，Au与TS-1载体表面的相互作用对丙烯环氧化反应起重要作用，较小的Au NPs （<3 nm）是丙烯环氧化反应的主要活性位点。反应100 h后，Au/TS-1催化剂的活性和PO选择性均未下降，反应后催化剂表面仅有1.8 wt%的碳质沉积，说明修饰后的催化剂表面产物更容易被残留的生物分子解吸。
The Au/TS-1 catalysts with different Au nanoparticles (NPs) sizes ranging from 3.1 to 8.4 nm but the same Au loading of 0.5 wt% were prepared byCinnamomum camphora(CC) extract, and were used for propylene epoxidation. The results showed that the interaction between Au and TS-1 support surface is important for propylene epoxidation and much smaller Au NPs (<3 nm) are the dominant active sites. After reaction of 100 h, there is no decreasing in both the activity and the PO selectivity for the Au/TS-1 catalysts, and only 1.8 wt% of the carbonaceous deposits on the surface of the catalyst after reaction, suggesting that the desorption of the product from the modified catalysts surface by residual biomolecules is much easier.