Effects of Cl- on Cu2O nanocubes for direct epoxidation of propylene by molecular oxygen

被引：16

作者：

Wang, Qiuxiang ^{[1
]}

Zhan, Chao ^{[1
]}

Zhou, Lingyun ^{[1
]}

Fu, Gang ^{[1
]}

Xie, Zhaoxiong ^{[1
]}

机构：

[1] Xiamen Univ, Coll Chem & Chem Engn, Dept Chem, State Key Lab Phys Chem Solid Surfaces, Xiamen 361005, Peoples R China

来源：

CATALYSIS COMMUNICATIONS | 2020年 / 135卷

基金：

中国国家自然科学基金;

关键词：

Promoter; Model catalyst; Propylene epoxidation; Cu2O; Cl-; promotion; ETHYLENE EPOXIDATION; CATALYSTS; OXIDATION; COPPER; SURFACE; SELECTIVITY; SITE;

D O I：

10.1016/j.catcom.2019.105897

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：

Promoters have been widely used in industrial catalysis but understanding the mechanism behind their function is still a challenging subject. As ideal model catalysts, nanocrystal catalysts with well - defined exposing facets and relatively large specific surface have attracted intense attention. We explored the effect of Cl- loading on Cu2O nanocubes enclosed by (100) facets for the direct epoxidation of propylene by molecular oxygen. Interestingly, a volcano-type curve was obtained when the selectivity and conversion are plotted as a function of the loading amount of Cl-, indicating that optimal surface O/Cl- ratio is critical for desirable catalytic performance.

引用

页数：5

共 24 条

[1] A density functional theory study of partial oxidation of propylene on Cu2O(001) and CuO(001) surfaces [J].

Duzenli, Derya ;

Atmaca, Deniz Onay ;

Gezer, Miray Gulbiter ;

Onal, Isik .

APPLIED SURFACE SCIENCE, 2015, 355 :660-666

[2] Active site and reaction mechanism for the epoxidation of propylene by oxygen over CuOx/SiO2 catalysts with and without Cs+ modification [J].

He, Jieli ;

Zhai, Qingge ;

Zhang, Qinghong ;

Deng, Weiping ;

Wang, Ye .

JOURNAL OF CATALYSIS, 2013, 299 :53-66

[3] Crystal-Plane-Controlled Selectivity of Cu2O Catalysts in Propylene Oxidation with Molecular Oxygen [J].

Hua, Qing ;

Cao, Tian ;

Gu, Xiang-Kui ;

Lu, Jiqing ;

Jiang, Zhiquan ;

Pan, Xiaorong ;

Luo, Liangfeng ;

Li, Wei-Xue ;

Huang, Weixin .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2014, 53 (19) :4856-4861

[4] Gas-phase propene epoxidation over coinage metal catalysts [J].

Huang, Jiahui ;

Haruta, Masatake .

RESEARCH ON CHEMICAL INTERMEDIATES, 2012, 38 (01) :1-24

[5] Dipole effect on ethylene epoxidation: Influence of alkali metals and chlorine [J].

Hus, Matej ;

Hellman, Anders .

JOURNAL OF CATALYSIS, 2018, 363 :18-25

[6] Theoretical Studies on the Direct Propylene Epoxidation Using Gold-Based Catalysts: A Mini-Review [J].

Ji, Jingjing ;

Lu, Zheng ;

Lei, Yu ;

Turner, C. Heath .

CATALYSTS, 2018, 8 (10)

[7] Direct Oxidation of Propylene to Propylene Oxide with Molecular Oxygen: A Review [J].

Khatib, Sheima J. ;

Oyama, S. T. .

CATALYSIS REVIEWS-SCIENCE AND ENGINEERING, 2015, 57 (03) :306-344

[8] Direct epoxidation of propylene to propylene oxide with molecular oxygen over Ag-Mo-W/ZrO2 catalysts [J].

Lee, Eo Jin ;

Lee, Joongwon ;

Seo, Young-Jong ;

Lee, Jong Won ;

Ro, Youngsoo ;

Yi, Jongheop ;

Song, In Kyu .

CATALYSIS COMMUNICATIONS, 2017, 89 :156-160

[9] Increased Silver Activity for Direct Propylene Epoxidation via Subnanometer Size Effects [J].

Lei, Y. ;

Mehmood, F. ;

Lee, S. ;

Greeley, J. ;

Lee, B. ;

Seifert, S. ;

Winans, R. E. ;

Elam, J. W. ;

Meyer, R. J. ;

Redfern, P. C. ;

Teschner, D. ;

Schlogl, R. ;

Pellin, M. J. ;

Curtiss, L. A. ;

Vajda, S. .

SCIENCE, 2010, 328 (5975) :224-228

[10] Epoxidation of propylene over Ag-CuCl catalysts using air as the oxidant [J].

Luo, MF ;

Lu, JQ ;

Li, C .

CATALYSIS LETTERS, 2003, 86 (1-3) :43-49

← 1 2 3 →