Chlorine promotion of styrene epoxidation on au(111)

被引：39

作者：

Pinnaduwage, Dilini S.

Zhou, Ling

Gao, Weiwei

Friend, Cynthia M.

机构：

[1] Harvard Univ, Div Engn & Appl Sci, Cambridge, MA 02138 USA

[2] Harvard Univ, Dept Chem & Biol Chem, Cambridge, MA 02138 USA

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2007年 / 129卷 / 07期

关键词：

D O I：

10.1021/ja068245k

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

For the first time, we show that chlorine has a dramatic effect on the selectivity for olefin epoxidation promoted by Au. Chlorine coadsorbed with oxygen on Au(111) inhibits combustion, formation of organic acids, and deposition of residual carbon. The temperature required for formation of styrene oxide is also lowered relative to O-covered Au(111), indicating faster kinetics for epoxidation. This work provides strong evidence that chlorine would be an effective promoter for enhancing the performance of Au-based selective oxidation catalysts.

引用

收藏

页码：1872 / +

页数：3

相关论文

共 15 条

[1] All that glitters is not Au0 [J].

Davis, RJ .

SCIENCE, 2003, 301 (5635) :926-927

[2] Selective oxidation of styrene on an oxygen-covered Au(111) [J].

Deng, XY ;

Friend, CM .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2005, 127 (49) :17178-17179

[3] Synthesis, structure, and reactions of stable oxametallacycles from styrene oxide on Ag(111) [J].

Enever, M ;

Linic, S ;

Uffalussy, K ;

Vohs, JM ;

Barteau, MA .

JOURNAL OF PHYSICAL CHEMISTRY B, 2005, 109 (06) :2227-2233

[4] Size- and support-dependency in the catalysis of gold [J].

Haruta, M .

CATALYSIS TODAY, 1997, 36 (01) :153-166

[5] Selective vapor-phase epoxidation of propylene over Au/TiO2 catalysts in the presence of oxygen and hydrogen [J].

Hayashi, T ;

Tanaka, K ;

Haruta, M .

JOURNAL OF CATALYSIS, 1998, 178 (02) :566-575

[6] Tunable gold catalysts for selective hydrocarbon oxidation under mild conditions [J].

Hughes, MD ;

Xu, YJ ;

Jenkins, P ;

McMorn, P ;

Landon, P ;

Enache, DI ;

Carley, AF ;

Attard, GA ;

Hutchings, GJ ;

King, F ;

Stitt, EH ;

Johnston, P ;

Griffin, K ;

Kiely, CJ .

NATURE, 2005, 437 (7062) :1132-1135

[7] INTERACTION OF CL-2 WITH THE AU(111) SURFACE IN THE TEMPERATURE-RANGE OF 120-K TO 1000-K [J].

KASTANAS, GN ;

KOEL, BE .

APPLIED SURFACE SCIENCE, 1993, 64 (03) :235-249

[8] Selectivity limitations in the heterogeneous epoxidation of olefins: Branching reactions of the oxametallacycle intermediate in the partial oxidation of styrene [J].

Klust, A ;

Madix, RJ .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2006, 128 (04) :1034-1035

[9] Heterogeneous alkene epoxidation: past, present and future [J].

Lambert, RM ;

Williams, FJ ;

Cropley, RL ;

Palermo, A .

JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL, 2005, 228 (1-2) :27-33

[10] Halogen-induced selectivity in heterogeneous epoxidation is an electronic effect - fluorine, chlorine, bromine and iodine in the Ag-catalysed selective oxidation of ethene [J].

Lambert, RM ;

Cropley, RL ;

Husain, A ;

Tikhov, MS .

CHEMICAL COMMUNICATIONS, 2003, (10) :1184-1185