STUDY OF SURFACE-STRUCTURE OF MGF2-SUPPORTED CHROMIUM-OXIDE

被引：7
作者：
WOJCIECHOWSKA, M [1 ]
LOMNICKI, S [1 ]
GOSLAR, J [1 ]
机构：
[1] POLISH ACAD SCI,INST MOLEC PHYS,POZNAN,POLAND
来源：
ZEITSCHRIFT FUR PHYSIKALISCHE CHEMIE-INTERNATIONAL JOURNAL OF RESEARCH IN PHYSICAL CHEMISTRY & CHEMICAL PHYSICS | 1995年 / 189卷
关键词：
CHROMIUM OXIDE; MAGNESIUM FLUORIDE; IR; EPR; SURFACE COMPLEXES;
D O I：
10.1524/zpch.1995.189.Part_1.113
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：
The IR and EPR results of MgF2-supported chromium oxide catalysts revealed the presence of ''chromate like'' tetrahedral surface species and CrO6 clusters of Cr2O3 structure. Changes of the state of the magnesium fluoride hydroxylation after introduction of chromium oxide to the system were observed with IR spectroscopy. Determination of acidic properties by means of pyridine as probe molecule enabled the origin of the acid centres to be explained.
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页码：113 / 122
页数：10
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