Nanostructured supported Pt-, Ru- and Pt-Ru catalysts for oxidation of methane into synthesis-gas

被引：9
|
作者：
Tungatarova, S. A. [1 ]
Dossumov, K. [1 ]
Baizhumanova, T. S. [1 ]
Popova, N. M. [1 ]
机构：
[1] DV Sokolsky Inst Organ Catalysis & Electrochem, Alma Ata 050010, Kazakhstan
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2010年 / 504卷
关键词：
Clusters; Metals; Nanostructures; X-ray diffraction; Transmission electron microscopy; PURIFICATION; CO;
D O I：
10.1016/j.jallcom.2010.04.223
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：
Mono- and bimetallic Pt-, Ru- and Pt-Ru catalysts with various Pt to Ru ratio for process of selective catalytic oxidation of methane to synthesis-gas at short contact time are developed. Precious metals were supported on alumina which was modified by cerium to enhance dispersion over carrier. Pt-Ru/2%Ce/(theta + alpha)-Al(2)O(3), reduced by H(2) at 1023 K, presents a mixture of nano-particles of Pt(0) (7.5-15.0 nm), Ru(0) (5.0-30.0 nm), its alloy in the mixed catalysts and intermetallic compounds of Pt(13)Ru(27) (3.0 < d < 18.0 nm). Semi-transparent Ce(6)O(11) particles (3.0-10.0 nm) and CeAlO(3) (3.0-5.0 nm) are present on the surface of Al(2)O(3). Such phase composition provides for optimum selective oxidation of CH(4) to synthesis-gas. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：S349 / S352
页数：4
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