Author:
Wang Junwen,Ma Lichao,Ding Chuanmin,Xue Yanan,Zhang Yongkang,Gao Zhiting
Abstract
Highly dispersed ultra-small Pt nanoparticles limited in nanosized silicalite-1 zeolite were prepared by in situ encapsulation strategy using H2PtCl6·6H2O as a precursor and tetrapropylammonium hydroxide as a template. The prepared Pt@S-1 catalyst was characterized by X-ray diffraction (XRD), inductively coupled plasma (ICP), transmission electron microscopy (TEM), scanning transmission electron microscopy (STEM), N2 adsorption-desorption, CO adsorption, and TGA techniques and exhibited unmatched catalytic activity and sintering resistance in the partial oxidation of methane to syngas. Strikingly, Pt@S-1 catalyst with further reduced size and increased dispersibility of Pt nanoparticles showed enhanced catalytic activity after low-temperature oxygen calcination. However, for Pt/S-1 catalyst, low-temperature oxygen calcination did not improve its catalytic activity.
Funder
National Natural Science Foundation of China
Natural Science Foundation of Shanxi Province
China Postdoctoral Science Foundation
Subject
Physical and Theoretical Chemistry,Catalysis
Cited by
6 articles.
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