OLIGOMERIZATION OF OLEFINS ON ALUMINA MOLYBDENUM CATALYST .2. STRUCTURE AND PATHWAYS OF FORMATION OF ETHYLENE POLYMERS WITH LOW DEGREES OF CATALYST SURFACE REDUCTION BY HYDROGEN

被引：0
|
作者：
ANSHITS, AG
VERESHCHAGIN, SN
MAKSIMOV, NG
HALL, WK
机构：
来源：
KINETICS AND CATALYSIS | 1990年 / 31卷 / 03期
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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：
Chromatography/mass spectrometry has been used to investigate the composition and structure of ethylene polymers formed on the surface of Mo/gamma-Al2O3 with low degrees of reduction of the catalyst by H-2. A scheme is proposed for the formation of oligomers with the participation of surface carbenes and strong protic centers. DPR spectroscopy has been used to study the state of the Mo5+ ions that are formed as a result of interaction of the catalyst with C2H4, H-2, and CO. It has been established that the state of the surface is determined by conversion of polymolybdate formations under the influence of various types of reducing agents.
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页码：556 / 563
页数：8
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