Insight into the Metal-Support Interaction of Pt and β-MnO2 in CO Oxidation

被引：5

作者：

Zhang, Tiantian ^{[1
]}

Xu, Jiacheng ^{[1
,2
]}

Sun, Yan ^{[1
]}

Fang, Shiyu ^{[1
]}

Wu, Zuliang ^{[1
,3
]}

Gao, Erhao ^{[1
,3
]}

Zhu, Jiali ^{[1
,3
]}

Wang, Wei ^{[1
,3
]}

Yao, Shuiliang ^{[1
,2
,3
]}

Li, Jing ^{[1
,3
]}

机构：

[1] Changzhou Univ, Sch Environm Sci & Engn, Changzhou 213164, Peoples R China

[2] Changzhou Univ, Sch Mat Sci & Engn, Changzhou 213164, Peoples R China

[3] Key Lab Adv Plasma Catalysis Engn China Petrochem, Changzhou 213164, Peoples R China

来源：

MOLECULES | 2023年 / 28卷 / 19期

基金：

中国国家自然科学基金;

关键词：

metal-support interaction; CO oxidation; terminal-type oxygen; bridge-type oxygen; Pt; MnO2; REACTION-MECHANISM; CATALYST; FORMALDEHYDE; COOXIDATION; DRIFTS;

D O I：

10.3390/molecules28196879

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Pt-based catalysts exhibit unique catalytic properties in many chemical reactions. In particular, metal-support interactions (MSI) greatly improve catalytic activity. However, the current MSI mechanism between platinum (Pt) and the support is not clear enough. In this paper, the interaction of 1 wt% Pt nanoparticles (NPs) on beta-MnO2 in carbon monoxide (CO) oxidation was studied. The Pt on beta-MnO2 inhibited CO oxidation below 210 degrees C but promoted it above 210 degrees C. A Pt/beta-MnO2 catalyst contains more Pt4+ and less Pt2+. The results of operando DRIFTS-MS show that surface-terminal-type oxygen (M=O) plays an important role in CO oxidation. When the temperature was below 210 degrees C, Mn=O consumption on Pt/beta-MnO2 was less than beta-MnO2 due to Pt4+ inhibition on CO oxidation. When the temperature was above 210 degrees C, Pt4+ was reduced to Pt2+, and Mn=O consumption due to CO oxidation was greater than beta-MnO2. The interaction of Pt and beta-MnO2 is proposed.

引用

页数：15

共 43 条

[1] Simple strategy for the construction of oxygen vacancies on α-MnO2 catalyst to improve toluene catalytic oxidation [J].

Chen, Lingzhu ;

Liu, Yongjun ;

Fang, Xue ;

Cheng, Yan .

JOURNAL OF HAZARDOUS MATERIALS, 2021, 409

[2] Pt supported on octahedral Fe3O4 microcrystals as a catalyst for removal of formaldehyde under ambient conditions [J].

Cui, Weiyi ;

Xue, Dan ;

Tan, Naidi ;

Zheng, Bin ;

Jia, Mingjun ;

Zhang, Wenxiang .

CHINESE JOURNAL OF CATALYSIS, 2018, 39 (09) :1534-1542

[3] Selection of Manganese oxide catalysts for catalytic oxidation of Carbon monoxide at ambient conditions [J].

Dey, S. ;

Mehta, N. S. .

RESOURCES ENVIRONMENT AND SUSTAINABILITY, 2020, 1

[4]

Dey S., 2020, Polytechnica, V3, P1, DOI [10.1007/s41050-019-00018-x, DOI 10.1007/S41050-019-00018-X]

[5] Enhanced catalytic and supercapacitor activities of DNA encapsulated β-MnO2 nanomaterials [J].

Ede, Sivasankara Rao ;

Ramadoss, Ananthakumar ;

Anantharaj, S. ;

Nithiyanantham, U. ;

Kundu, Subrata .

PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2014, 16 (39) :21846-21859

[6] Modulate the metal support interactions to optimize the surface-interface features of Pt/CeO2 catalysts for enhancing the toluene oxidation [J].

Fan, Jie ;

Sun, Yuhang ;

Fu, Mingli ;

Li, Jiaqi ;

Ye, Daiqi .

JOURNAL OF HAZARDOUS MATERIALS, 2022, 424

[7] Unraveling the promotional effects of K-doping on the mobility of surface oxygen species of CoCr2O4 for improved formaldehyde catalytic oxidation: The weakened metal-oxygen bond strength [J].

Gao, Erhao ;

Jin, Qi ;

Zhang, Tiantian ;

Han, Li ;

Li, Ning ;

Xu, Jiacheng ;

Yao, Shuiliang ;

Wu, Zuliang ;

Li, Jing ;

Zhu, Jiali ;

Wang, Wei .

CHEMICAL ENGINEERING JOURNAL, 2023, 474

[8] In-situ DRIFTS for the mechanistic studies of NO oxidation over α-MnO2, β-MnO2 and γ-MnO2 catalysts [J].

Gao, Fengyu ;

Tang, Xiaolong ;

Yi, Honghong ;

Chu, Chao ;

Li, Na ;

Li, Jingying ;

Zhao, Shunzheng .

CHEMICAL ENGINEERING JOURNAL, 2017, 322 :525-537

[9] Facile fabrication of flower-like MnO2 hollow microspheres as high-performance catalysts for toluene oxidation [J].

Gu, Wenxiu ;

Li, Chenqi ;

Qiu, Jianhao ;

Yao, Jianfeng .

JOURNAL OF HAZARDOUS MATERIALS, 2021, 408

[10] Highly efficient and selective Ru and Ce modified ZSM-5 catalysts for catalytic oxidation of toluene [J].

Guo, Na ;

Zhang, Jinyao ;

Jiang, Luxiang ;

Wang, Dengtai ;

Wang, Zuwu .

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 2022, 651

← 1 2 3 4 5 →