Diverse Effects of SO2-Induced Pt-O-SO3 on the Catalytic Oxidation of C3H6 and C3H8

被引：1

作者：

Zhang, Baojian ^{[1
,2
,3
]}

Yang, Yuan ^{[1
,2
]}

Zheng, Juan ^{[1
,2
]}

Zhang, Dijierui ^{[1
,2
]}

Chen, Wei ^{[1
,2
]}

Yuan, Weidong ^{[1
,2
]}

Chen, Xiaoping ^{[1
,2
]}

Liu, Rui ^{[1
,2
]}

Chen, Bosheng ^{[1
,2
]}

Li, Liangwei ^{[1
,2
,3
]}

Shi, Limin ^{[1
,2
]}

Wang, Jinlong ^{[1
,2
,3
]}

Luo, Zhu ^{[1
,2
,3
]}

Guo, Yanbing ^{[1
,2
,3
]}

机构：

[1] Cent China Normal Univ, Inst Environm Appl Chem, Coll Chem, Wuhan 430079, Peoples R China

[2] Cent China Normal Univ, Engn Res Ctr Photoenergy Utilizat Pollut Control &, Minist Educ, Wuhan 430079, Peoples R China

[3] Wuhan Inst Photochem & Technol, Wuhan 430083, Peoples R China

来源：

ENVIRONMENTAL SCIENCE & TECHNOLOGY | 2024年 / 58卷 / 40期

基金：

中国国家自然科学基金;

关键词：

VOCs catalytic oxidation; SO2; sulfur-tolerantPt-based catalysts; Pt-O-SO3; activestructure; PROPANE; PERFORMANCE; PT/AL2O3; SULFATE; SUPPORT; PROPENE;

D O I：

10.1021/acs.est.4c04946

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The effects of sulfur dioxide (SO2) in the catalytic purification of short-chain hydrocarbons are still controversial, and the exact role of SO2 on adsorption and reaction pathways during the catalytic oxidation of different volatile organic compounds (VOCs) remains unclear. Herein, a three-dimensional ordered macroporous Ce0.8Zr0.2O2 supported Pt nanoparticle monolithic catalyst (Pt/OM CZO) was synthesized to investigate these effects. Our findings uncover the diverse effects of SO2: Upon SO2 treatment, the coupling between the S 3p and Pt 5d orbitals promotes the Pt-O-SO3 structure in situ formed on the catalyst surface. The propene (C3H6) molecule readily binds with the oxygen atom in Pt-O-SO3, resulting in the accumulation of acetone and carbon deposition, thereby hindering C3H6 oxidation. Conversely, a cleaved oxygen atom within the Pt-O-SO3 structure enhances propane (C3H8) adsorption and activates the C-H bond, facilitating C3H8 oxidation. These insights are pivotal for advancing the frontier of sulfur-tolerant catalysts, addressing both economic and environmental challenges.

引用

页码：18020 / 18032

页数：13

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