CO reduction of calcined CrOx/SiO2 ethene polymerization catalysts

被引：6

作者：

Ruddick, VJ ^{[1
]}

Badyal, JPS ^{[1
]}

机构：

[1] UNIV DURHAM,DEPT CHEM,SCI LABS,DURHAM DH1 3LE,ENGLAND

来源：

LANGMUIR | 1997年 / 13卷 / 03期

关键词：

D O I：

10.1021/la960334v

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Chromium(III) acetate impregnated onto a high surface area silica support and chromium(III) acetylacetonate dry-blended with silica were calcined at 1053 K and cooled. CO reduction of the resultant CrOx/silica materials was monitored by quadrupole mass spectrometry and found to proceed via a Langmuir-Hinshelwood mechanism. Activation energies for CrOx/silica catalyst reduction by CO have been determined from the corresponding Arrhenius plots; these suggest the existence of two types of reactive chromium sites.

引用

页码：469 / 472

页数：4

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