Effect of Metal Oxide Promoters on Low Temperature CO Oxidation over Water-Pretreated Pt/Alumina Catalysts

被引：15

作者：

Tomita, Atsuko ^{[1
]}

Shimizu, Ken-ichi ^{[2
]}

Tai, Yutaka ^{[1
]}

机构：

[1] Natl Inst Adv Ind Sci & Technol, Mat Res Inst Sustainable Dev, Nagoya, Aichi 4638560, Japan

[2] Hokkaido Univ, Catalysis Res Ctr, Sapporo, Hokkaido 0010021, Japan

来源：

CATALYSIS LETTERS | 2014年 / 144卷 / 10期

关键词：

Pt/Al2O3; CO oxidation; Promoter; Water-pretreatment; EXAFS; PT-FE/ZEOLITE CATALYSTS; PREFERENTIAL OXIDATION; CARBON-MONOXIDE; HYDROGEN; H-2; SPECTROSCOPY; GAMMA-AL2O3; MECHANISM; PT/AL2O3; FE;

D O I：

10.1007/s10562-014-1305-6

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：

Addition of oxides of transition metals such as Mn, Fe, Co, Ni, Cu, and Ce to Pt/Al2O3 catalysts followed by water-pretreatment enhanced its CO oxidation activity. Iron oxide was the most effective promoter between -40 and 150 degrees C among those examined. Below 120 degrees C, CO conversion was maximized at the Fe to Pt molar ratio of 1, whereas above 120 degrees C conversion increased monotonically with Fe content. Pt L-III extended X-ray absorption fine structure analyses suggested that the formation of Pt-Fe alloy enhanced CO oxidation activity at high temperatures but reduced it at low temperatures.

引用

页码：1689 / 1695

页数：7

共 24 条

[1] Theory of solid-state contributions to the x-ray elastic scattering amplitude [J].

Ankudinov, AL ;

Rehr, JJ .

PHYSICAL REVIEW B, 2000, 62 (04) :2437-2445

[2] Preparation of highly dispersed Pt particles in zeolite Y with a narrow particle size distribution: Characterization by hydrogen chemisorption, TEM, EXAFS spectroscopy, and particle modeling [J].

de Graaf, J ;

van Dillen, AJ ;

de Jong, KP ;

Koningsberger, DC .

JOURNAL OF CATALYSIS, 2001, 203 (02) :307-321

[3] Preferential oxidation of carbon monoxide catalyzed by platinum nanoparticles in mesoporous silica [J].

Fukuoka, Atsushi ;

Kimura, Jun-ichi ;

Oshio, Tadashi ;

Sakamoto, Yuzuru ;

Ichikawa, Masaru .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2007, 129 (33) :10120-10125

[4] LOW-TEMPERATURE OXIDATION OF CO OVER GOLD SUPPORTED ON TIO2, ALPHA-FE2O3, AND CO3O4 [J].

HARUTA, M ;

TSUBOTA, S ;

KOBAYASHI, T ;

KAGEYAMA, H ;

GENET, MJ ;

DELMON, B .

JOURNAL OF CATALYSIS, 1993, 144 (01) :175-192

[5] Carbon monoxide oxidation at room temperature on Pt/CeO2-ZrO2-Bi2O3 catalysts [J].

Imanaka, Nobuhito ;

Masui, Toshiyuki ;

Imadzu, Hayato ;

Yasuda, Keisuke .

CHEMICAL COMMUNICATIONS, 2011, 47 (39) :11032-11034

[6] Controlled modification of Pt/Al2O3 for the preferential oxidation of CO in hydrogen: A comparative study of modifying element [J].

Jain, Shailesh K. ;

Crabb, Eleanor M. ;

Smart, Lesley E. ;

Thompsett, David ;

Steele, Andrew M. .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2009, 89 (3-4) :349-355

[7] Kinetics of the selective CO oxidation in H-2-rich gas on Pt/Al2O3 [J].

Kahlich, MJ ;

Gasteiger, HA ;

Behm, RJ .

JOURNAL OF CATALYSIS, 1997, 171 (01) :93-105

[8] Selective catalytic oxidation of CO in H2:: Fuel cell applications [J].

Korotkikh, O ;

Farrauto, R .

CATALYSIS TODAY, 2000, 62 (2-3) :249-254

[9] Reaction mechanism of preferential oxidation of carbon monoxide on Pt, Fe, and Pt-Fe/mordenite catalysts [J].

Kotobuki, M ;

Watanabe, A ;

Uchida, H ;

Yamashita, H ;

Watanabe, M .

JOURNAL OF CATALYSIS, 2005, 236 (02) :262-269

[10] XAFS characterization of Pt-Fe/zeolite catalysts for preferential oxidation of CO in hydrogen fuel gases [J].

Kotobuki, M ;

Shido, T ;

Tada, M ;

Uchida, H ;

Yamashita, H ;

Iwasawa, Y ;

Watanabe, M .

CATALYSIS LETTERS, 2005, 103 (3-4) :263-269

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