作者
Pengfei Xie, Tiancheng Pu, Anmin Nie, Sooyeon Hwang, Stephen C Purdy, Wenjian Yu, Dong Su, Jeffrey T Miller, Chao Wang
发表日期
2018/4/3
期刊
ACS Catalysis
卷号
8
期号
5
页码范围
4044-4048
出版商
American Chemical Society
简介
Nanoceria-supported atomic Pt catalysts (denoted as Pt1@CeO2) have been synthesized and demonstrated with advanced catalytic performance for the nonoxidative, direct conversion of methane. These catalysts were synthesized by calcination of Pt-impregnated porous ceria nanoparticles at high temperature (ca. 1000 °C), with the atomic dispersion of Pt characterized by combining aberration-corrected high-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM), X-ray photoelectron spectroscopy (XPS), X-ray absorption spectroscopy (XAS), and diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) analyses. The Pt1@CeO2 catalysts exhibited much superior catalytic performance to its nanoparticulated counterpart, achieving 14.4% of methane conversion at 975 °C and 74.6% selectivity toward C2 products (ethane, ethylene, and acetylene). Comparative studies of …
学术搜索中的文章
P Xie, T Pu, A Nie, S Hwang, SC Purdy, W Yu, D Su… - Acs Catalysis, 2018