In Situ Encapsulated Pt Nanoparticles Dispersed in Low Temperature Oxygen for Partial Oxidation of Methane to Syngas

Autor: Junwen Wang, Lichao Ma, Chuanmin Ding, Yanan Xue, Yongkang Zhang, Zhiting Gao
Jazyk: angličtina
Rok vydání: 2019
Předmět:
Zdroj: Catalysts, Vol 9, Iss 9, p 720 (2019)
Druh dokumentu: article
ISSN: 2073-4344
73020559
DOI: 10.3390/catal9090720
Popis: 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.
Databáze: Directory of Open Access Journals
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