THE PREPARATION AND USE OF HIGH SURFACE-AREA SILICON-CARBIDE CATALYST SUPPORTS

被引：58

作者：

VANNICE, MA ^{[1
]}

CHAO, YL ^{[1
]}

FRIEDMAN, RM ^{[1
]}

机构：

[1] MONSANTO CO, ST LOUIS, MO 63167 USA

来源：

APPLIED CATALYSIS | 1986年 / 20卷 / 1-2期

关键词：

CARBON MONOXIDE - Hydrogenation - CATALYSTS - Nickel Compounds - METHANE - POWDERS - SILICON CARBIDE;

D O I：

10.1016/0166-9834(86)80008-2

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：

High surface area SiC has been prepared in a tubular reactor by the high-temperature, vapor phase decomposition of Si-containing compounds such as tetramethylsilane. Surface areas near 50 m**2 g** minus **1 for beta -phase SiC were obtained in these initial experiments. These powders did not sinter during heating to 1173 K. even in the presence of oxygen, and surface areas actually increased somewhat due to burnoff of residual elemental carbon. Using these SiC powders as a support resulted in well-dispersed Pt/SiC catalysts which possessed normal kinetic behavior for methanation. However, Ni/SiC catalysts exhibited unusual chemisorption behavior, a range of activity for CO hydrogenation, and selectivity only to methane.

引用

页码：91 / 107

页数：17

共 17 条

[1] SUPPORT AND CRYSTALLITE SIZE EFFECTS IN CO HYDROGENATION ON NICKEL [J].