The tuned selective catalytic reduction behaviors of NO over the Pt/CeO2 catalysts by preferentially exposing different facets of CeO2 supports

被引：3

作者：

Wang, Kaiqiang ^{[1
]}

Zhang, Roujia ^{[1
]}

Wu, Songze ^{[1
]}

Chen, Mengyin ^{[1
]}

Tang, Jie ^{[1
]}

Zhao, Liming ^{[2
]}

Liu, Yubing ^{[1
]}

Fan, Yining ^{[1
]}

机构：

[1] Nanjing Univ, Sch Chem & Chem Engn, Nanjing 210023, Peoples R China

[2] China Jiliang Univ, Coll Standardisat, Hangzhou 310018, Peoples R China

来源：

CATALYSIS COMMUNICATIONS | 2022年 / 172卷

基金：

中国国家自然科学基金;

关键词：

NO plus CO reaction; Pt catalyst; CeO2; support; Different exposed facet; Oxygen vacancy; PLATINUM SINGLE ATOMS; CO OXIDATION; CERIA; SHAPE; PERFORMANCE; REACTIVITY; STABILITY; KINETICS; WATER;

D O I：

10.1016/j.catcom.2022.106530

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

For the Pt catalysts supported on CeO2 nanosheet (NS), nanopolyhedron (NP) and nanorod (NR) with preferentially exposed {100}, {111} and {110} facets, respectively, the NO conversion and N-2 selectivity for NO + CO reaction at 100-250 degrees C exhibit the order as Pt/CeO2-NS{100} > Pt/CeO2-NP{111} > Pt/CeO2-NR{110}. The higher surface concentration of oxygen vacancies on CeO2 (NS) can promote the dissociation of NO and result in the highest performance of Pt/CeO2-NS{100} catalyst. Moreover, CO intensively chemisorbs on the Pt2+ ions on CeO2 (NR) support, suppressing the dissociative chemisorption of NO and leading to lower reaction performance of Pt/CeO2-NR{110} catalyst.

引用

页数：5

共 34 条

[1] Higher catalytic activity of nano-Ce1-x-yTixPdyO2-δ compared to nano-Ce1-x PdxO2-δ for CO oxidation and N2O and NO reduction by CO:: Role of oxide ion vacancy [J].

Baidya, Tinku ;

Marimuthu, A. ;

Hegde, M. S. ;

Ravishankar, N. ;

Madras, Giridhar .

JOURNAL OF PHYSICAL CHEMISTRY C, 2007, 111 (02) :830-839

[2] FT-IR study of CO adsorption on Pt/CeO2:: characterisation and structural rearrangement of small Pt particles [J].

Bazin, P ;

Saur, O ;

Lavalley, JC ;

Daturi, M ;

Blanchard, G .

PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2005, 7 (01) :187-194

[3] Maximum Noble-Metal Efficiency in Catalytic Materials: Atomically Dispersed Surface Platinum [J].

Bruix, Albert ;

Lykhach, Yaroslava ;

Matolinova, Iva ;

Neitzel, Armin ;

Skala, Tomas ;

Tsud, Nataliya ;

Vorokhta, Mykhailo ;

Stetsovych, Vitalii ;

Sevcikova, Klara ;

Myslivecek, Josef ;

Fiala, Roman ;

Vaclavu, Michal ;

Prince, Kevin C. ;

Bruyere, Stephanie ;

Potin, Valerie ;

Illas, Francesc ;

Matolin, Vladimir ;

Libuda, Joerg ;

Neyman, Konstantin M. .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2014, 53 (39) :10525-10530

[4] Structure of the catalytically active copper-ceria interfacial perimeter [J].

Chen, Aling ;

Yu, Xiaojuan ;

Zhou, Yan ;

Miao, Shu ;

Li, Yong ;

Kuld, Sebastian ;

Sehested, Jens ;

Liu, Jingyue ;

Aoki, Toshihiro ;

Hong, Song ;

Camellone, Matteo Farnesi ;

Fabris, Stefano ;

Ning, Jing ;

Jin, Chuanchuan ;

Yang, Chengwu ;

Nefedov, Alexei ;

Woell, Christof ;

Wang, Yuemin ;

Shen, Wenjie .

NATURE CATALYSIS, 2019, 2 (04) :334-341

[5] Surface Engineering Protocol To Obtain an Atomically Dispersed Pt/CeO2 Catalyst with High Activity and Stability for CO OxidationD [J].

Chen, Jiayu ;

Wanyan, Yongjin ;

Zeng, Jianxin ;

Fang, Huihuang ;

Li, Zejun ;

Dong, Yongdi ;

Qin, Ruixuan ;

Wu, Changzheng ;

Liu, Deyu ;

Wang, Mingzhi ;

Kuang, Qin ;

Xie, Zhaoxiong ;

Zheng, Lansun .

ACS SUSTAINABLE CHEMISTRY & ENGINEERING, 2018, 6 (11) :14054-14062

[6] A simple and effective method to synthesize Pt/CeO2 three-way catalysts with high activity and hydrothermal stability [J].

Fan, Jun ;

Chen, Yusheng ;

Jiang, Xue ;

Yao, Peng ;

Jiao, Yi ;

Wang, Jianli ;

Chen, Yaoqiang .

JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING, 2020, 8 (05)

[7] Reduction of NO by CO over Rh/CeO2-ZrO2 catalysts -: Evidence for a support-promoted catalytic activity [J].

Fornasiero, P ;

Rao, GR ;

Kaspar, J ;

L'Erario, F ;

Graziani, M .

JOURNAL OF CATALYSIS, 1998, 175 (02) :269-279

[8] Morphology Effect of CeO2 Support in the Preparation, Metal-Support Interaction, and Catalytic Performance of Pt/CeO2 Catalysts [J].

Gao, Yuxian ;

Wang, Wendong ;

Chang, Sujie ;

Huang, Weixin .

CHEMCATCHEM, 2013, 5 (12) :3610-3620

[9] Kinetics of the CO+NO reaction over bimetallic platinum-rhodium on alumina: Effect of ceria incorporation into noble metals [J].

Granger, P ;

Delannoy, L ;

Lecomte, JJ ;

Dathy, C ;

Praliaud, H ;

Leclercq, L ;

Leclercq, G .

JOURNAL OF CATALYSIS, 2002, 207 (02) :202-212

[10] Kinetics of the NO and CO reaction over platinum catalysts - I. Influence of the support [J].

Granger, P ;

Dathy, C ;

Lecomte, JJ ;

Leclercq, L ;

Prigent, M ;

Mabilon, G ;

Leclercq, G .

JOURNAL OF CATALYSIS, 1998, 173 (02) :304-314

← 1 2 3 4 →