An efficient Au catalyst supported on hollow carbon spheres for acetylene hydrochlorination |
| |
Authors: | Lihua Kang Mingyuan Zhu |
| |
Affiliation: | College of Chemistry and Chemical Engineering of Yantai University, Yantai Shandong 264005 PR China, +86-993-2057277 ; School of Chemistry and Chemical Engineering of Shihezi University, Shihezi Xinjiang 832000 PR China |
| |
Abstract: | Mesoporous hollow carbon spheres (HCSs) were prepared using SiO2 spheres as a hard template, and Au nanoparticles were then synthesized using NaBH4 as a reducing agent on the surface of the HCS support. Transmission electron microscopy characterization indicated that Au nanoparticles were much smaller on the HCS support than those on the active carbon (AC) support. HCl-TPD showed that the Au/HCS catalyst displayed a more active site than on Au/AC. The resulting Au/HCS catalyst showed excellent catalytic activity and stability for acetylene hydrochlorination. Acetylene conversion of Au/HCS can be maintained above 92% even after 500 h of lifetime. The excellent catalytic performance of Au/HCS was attributed to the presence of the HCS support, which limited the aggregation of Au nanoparticles.Mesoporous hollow carbon spheres (HCS) were prepared and applied as the support of Au catalyst for acetylene hydrochlorination. Au/HCS exhibited excellent stability for acetylene hydrochlorination. |
| |
Keywords: | |
|
|