CATALYST DEACTIVATION DURING HYDROTREATING OF COAL-DERIVED LIQUID AND CATALYST DESIGN FOR LONG LIFE CATALYST.

被引：0

作者：

Nishijima, Akio ^{[1
]}

机构：

[1] Natl Chemical Lab for Industry, Jpn, Natl Chemical Lab for Industry, Jpn

来源：

Nenryo Kyokaishi | 1988年 / 67卷 / 04期

关键词：

CATALYSTS - Deactivation - MOLYBDENUM AND ALLOYS;

D O I：

10.3775/jie.67.210

中图分类号：

学科分类号：

摘要：

The deactivation behavior of molybdenum catalysts used for hydrotreating coal-derived liquids is reviewed to obtain information for the design concept for long-life catalysts. Causes for the catalyst deactivation are fundamentally similar to those for catalysts used in petroleum hydroprocessing. Characterization of spent catalysts revealed certain differences in features of metal and carbonaceous deposits resulting from the use of coal liquids and petroleum. The changes in physical and chemical properties of used hydroprocessing catalysts are discussed for coal liquids and petroleum, respectively. Changes in the local structure of active metals were found to decrease catalyst activity during coal liquid hydrotreating. Based on understanding of the catalyst deactivation, remedies for catalyst deactivation in connection with the development of new types of long-life catalysts are also discussed.

引用

页码：210 / 220