CHARACTERIZATION OF SUPPORTED VANADIUM-OXIDE CATALYSTS BY LOW-TEMPERATURE OXYGEN-CHEMISORPTION TECHNIQUE .2. THE V2O5/SIO2 SYSTEM

被引：53

作者：

NAG, NK

CHARY, KVR

RAO, BR

SUBRAHMANYAM, VS

机构：

[1] UNIV UTAH, DEPT FUELS ENGN, SALT LAKE CITY, UT 84112 USA

[2] REG RES LAB, HYDERABAD 500009, ANDHRA PRADESH, INDIA

来源：

APPLIED CATALYSIS | 1987年 / 31卷 / 01期

关键词：

CATALYSIS; -; OXYGEN; Adsorption; SURFACES; Structure;

D O I：

10.1016/S0166-9834(00)80667-3

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：

Low Temperature Oxygen Chemisorption (LTOC) has been applied to characterize a series of silica-supported V-oxide catalysts containing up to 5 mu mol V m** minus **2. LTOC data, coupled with ancillary information obtained from ESR, IR, XRD, ESCA and surface area measurements, have thrown light on the nature of the dispersed vanadia which has been found to consist of two distinct highly dispersed V-oxide phases. Based on the experimental results, a model of the surface structure of the dispersed phases has been proposed.

引用

页码：73 / 85

页数：13

共 36 条

[1] CARRIER EFFECT ON NATURE OF V4+ AND ACTIVE OXYGEN SPECIES IN VAPOR-PHASE OXIDATION OF BUTADIENE OVER SUPPORTED DIVANADIUM PENTAOXIDE CATALYSTS [J].