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一种负载在空心碳球上用于乙炔氢氯化反应的高效金催化剂。

An efficient Au catalyst supported on hollow carbon spheres for acetylene hydrochlorination.

作者信息

Kang Lihua, Zhu Mingyuan

机构信息

College of Chemistry and Chemical Engineering of Yantai University Yantai Shandong 264005 PR China

School of Chemistry and Chemical Engineering of Shihezi University Shihezi Xinjiang 832000 PR China.

出版信息

RSC Adv. 2019 Oct 7;9(55):31812-31818. doi: 10.1039/c9ra06989e.

DOI:10.1039/c9ra06989e
PMID:35530780
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9072647/
Abstract

Mesoporous hollow carbon spheres (HCSs) were prepared using SiO spheres as a hard template, and Au nanoparticles were then synthesized using NaBH 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.

摘要

以SiO球为硬模板制备了介孔空心碳球（HCSs），然后以NaBH为还原剂在HCS载体表面合成了金纳米颗粒。透射电子显微镜表征表明，HCS载体上的金纳米颗粒比活性炭（AC）载体上的金纳米颗粒小得多。HCl-TPD表明，Au/HCS催化剂比Au/AC具有更多的活性位点。所得的Au/HCS催化剂对乙炔氢氯化反应表现出优异的催化活性和稳定性。即使在500小时的寿命后，Au/HCS的乙炔转化率仍可保持在92%以上。Au/HCS优异的催化性能归因于HCS载体的存在，它限制了金纳米颗粒的聚集。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1905/9072647/3f91380bc3ed/c9ra06989e-f9.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1905/9072647/a85142ac794b/c9ra06989e-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1905/9072647/08cedd24b060/c9ra06989e-f5.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1905/9072647/fe15dd141db4/c9ra06989e-f7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1905/9072647/57641d3c9138/c9ra06989e-f8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1905/9072647/3f91380bc3ed/c9ra06989e-f9.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1905/9072647/c4c96b32f8c0/c9ra06989e-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1905/9072647/cf6bdc2682b3/c9ra06989e-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1905/9072647/0e313cd4db03/c9ra06989e-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1905/9072647/a85142ac794b/c9ra06989e-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1905/9072647/08cedd24b060/c9ra06989e-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1905/9072647/4b5c81af264d/c9ra06989e-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1905/9072647/fe15dd141db4/c9ra06989e-f7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1905/9072647/57641d3c9138/c9ra06989e-f8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1905/9072647/3f91380bc3ed/c9ra06989e-f9.jpg

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