CHARACTERIZATION OF SILICA-SUPPORTED MOLYBDENUM CATALYSTS BY ESR, XPS AND THIOPHENE HYDRODESULFURIZATION

被引：7

作者：

KOSTOVA, NG

SPOJAKINA, AA

机构：

[1] Institute of Kinetics and Catalysis, Bulgarian Academy of Sciences, Sofia

来源：

REACTION KINETICS AND CATALYSIS LETTERS | 1995年 / 54卷 / 02期

关键词：

D O I：

10.1007/BF02071025

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：

Two Mo/SiO2 samples have been prepared by impregnation of silica gel with aqueous solution of molybdophosphoric heteropoly acid or ammonium heptamolybdate. The catalysts were studied by ESR and TR spectroscopy, X-ray diffraction, and XPS. Their activity was measured in the reaction of thiophene hydrodesulfurization. The silica-supported. P-Mo heteropoly acid, with a preserved Keggin structure of the heteropoly anion and sulfided by H2S, exhibited two times higher steady conversion in comparison with ammonium heptamolybdate supported on silica at pH=11 and calcined and sulfided at 500 degrees C.

引用

页码：313 / 321

页数：9

共 27 条

[1] INFRARED AND RAMAN STUDIES OF AMORPHOUS MOS3 AND POORLY CRYSTALLINE MOS2 [J].