Characterization and catalytic activity of unpromoted and alkali (earth)-promoted Au/Al2O3 catalysts for low-temperature CO oxidation

被引：77

作者：

Gluhoi, A. C.

Tang, X.

Marginean, P.

Nieuwenhuys, B. E.

机构：

[1] Leiden Univ, Leiden Inst Chem, Dept Heterogeneous Catalysis & Surface Chem, NL-2300 RA Leiden, Netherlands

[2] Natl Inst Res & Dev Isotop & Mol Technol, R-3400 Cluj Napoca 5, Romania

来源：

TOPICS IN CATALYSIS | 2006年 / 39卷 / 1-2期

关键词：

metallic gold; ionic gold; additives; alkali (earth) metal oxides; promoters; CO oxidation;

D O I：

10.1007/s11244-006-0043-4

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Various unpromoted and alkali (earth) promoted gold catalysts were characterized by means of XRD, HRTEM, DR/UV-Vis and TPR. Based on the results we conclude that metallic Au is the active species in CO oxidation and that the reduction of Au3+ to Au-0 proceeds below 200 degrees C. Pretreatment at mild temperatures, viz. 200 degrees C, results in the highest catalytic performance of Au/Al2O3 in low-temperature CO oxidation. Alkali (earth) metal oxide additives are most probably structural promoters. The best promoting effect is found for BaO.

引用

页码：101 / 110

页数：10

共 46 条

[1] Low temperature water gas shift over gold catalysts [J].

Andreeva, D .

GOLD BULLETIN, 2002, 35 (03) :82-88

[2] The influence of the preparation methods on the catalytic activity of platinum and gold supported on TiO2 for CO oxidation [J].

Bamwenda, GR ;

Tsubota, S ;

Nakamura, T ;

Haruta, M .

CATALYSIS LETTERS, 1997, 44 (1-2) :83-87

[3] THE OXIDATION AND SCRAMBLING OF CO WITH OXYGEN AT ROOM-TEMPERATURE ON AU/ZNO [J].

BOCCUZZI, F ;

CHIORINO, A ;

TSUBOTA, S ;

HARUTA, M .

CATALYSIS LETTERS, 1994, 29 (1-2) :225-234

[4] FTIR study of carbon monoxide oxidation and scrambling at room temperature over gold supported on ZnO and TiO2 .2. [J].

Boccuzzi, F ;

Chiorino, A ;

Tsubota, S ;

Haruta, M .

JOURNAL OF PHYSICAL CHEMISTRY, 1996, 100 (09) :3625-3631

[5] Au/TiO2 nanosized samples:: A catalytic, TEM, and FTIR study of the effect of calcination temperature on the CO oxidation [J].

Boccuzzi, F ;

Chiorino, A ;

Manzoli, M ;

Lu, P ;

Akita, T ;

Ichikawa, S ;

Haruta, M .

JOURNAL OF CATALYSIS, 2001, 202 (02) :256-267

[6] Catalysis by gold [J].

Bond, GC ;

Thompson, DT .

CATALYSIS REVIEWS-SCIENCE AND ENGINEERING, 1999, 41 (3-4) :319-388

[7] Comparison of substance P concentration in acupuncture points in different tissues in dogs [J].

Chan, WW ;

Weissensteiner, H ;

Rausch, WD ;

Chen, KY ;

Wu, LS ;

Lin, JH .

AMERICAN JOURNAL OF CHINESE MEDICINE, 1998, 26 (01) :13-18

[8] Supported gold nanoparticles from quantum dot to mesoscopic size scale:: Effect of electronic and structural properties on catalytic hydrogenation of conjugated functional groups [J].

Claus, P ;

Brückner, A ;

Mohr, C ;

Hofmeister, H .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2000, 122 (46) :11430-11439

[9] Nature of the active site for CO oxidation on highly active Au/γ-Al2O3 [J].

Costello, CK ;

Kung, MC ;

Oh, HS ;

Wang, Y ;

Kung, HH .

APPLIED CATALYSIS A-GENERAL, 2002, 232 (1-2) :159-168

[10] Alkali (earth)-doped Au/Al2O3 catalysts for the total oxidation of propene [J].

Gluhoi, AC ;

Bogdanchikova, N ;

Nieuwenhuys, BE .

JOURNAL OF CATALYSIS, 2005, 232 (01) :96-101

← 1 2 3 4 5 →