现代化工

现代化工 ›› 2022, Vol. 42 ›› Issue (9) : 120-124. DOI: 10.16606/j.cnki.issn0253-4320.2022.09.024

科研与开发

耐高温Pt@TiO₂催化剂的制备及其催化燃烧丙烷、丙烯性能研究

马静, 方子昂, 林静, 马子然, 王红妍, 王宝冬, 刘爽

作者信息 +

Preparation of Pt@TiO₂ catalysts with high temperature resistance and study on its catalytic performances in combustion of propane and propylene

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文章历史 +

Received		Published
2021-09-23		2022-09-20
Issue Date	Revised Date
2022-09-13	2021-09-23

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摘要

采用三聚氰胺诱导的"金属-载体强相互作用"工艺合成了具有Pt@TiO_x包覆结构的新型铂催化剂(Pt@TiO₂),并利用XRD、TEM、XPS和EPR对其进行表征分析。结果表明,Pt@TiO₂催化剂表现出强于传统Pt/TiO₂催化剂的热稳定性和丙烷、丙烯氧化活性。即使经过800℃高温处理,Pt@TiO₂仍能在较低温度实现丙烷(T₅₀=312℃)、丙烯(T₅₀=237℃)的催化燃烧,在煤化工尾气挥发性有机物(VOCs)净化领域展现出较强的应用潜力。

Abstract

Pt@TiO₂ catalysts with core-shell like Pt@TiO_x structure are synthesized through a melamine-induced SMSI-related strategy,and analyzed by XRD,TEM,XPS and EPR.Results show Pt@TiO₂ exhibits significantly better thermal stability and activities for the combustion of propane and propylene than conventional Pt/TiO₂ catalysts.Although Pt@TiO₂ has been treated at 800℃,it still ignites propane and propylene at 312℃ and 237℃ respectively,indicating its high practical potential in the VOCs elimination of the coal chemical industry.