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MONOLAYER DISPERSION OF MOLYBDENUM ON SILICA

被引：60
作者：
ROARK, RD
KOHLER, SD
EKERDT, JG
KIM, DS
WACHS, IE
机构：
[1] UNIV TEXAS,DEPT CHEM ENGN,AUSTIN,TX 78712
[2] LEHIGH UNIV,DEPT CHEM ENGN,ZETTLEMOYER CTR SURFACE STUDIES,BETHLEHEM,PA 18015
[3] LEHIGH UNIV,DEPT CHEM,BETHLEHEM,PA 18015
来源：
CATALYSIS LETTERS | 1992年 / 16卷 / 1-2期
关键词：
SPREADING; DEHYDRATION; MOLYBDENUM OXIDE; SILICA; INFRARED SPECTROSCOPY; RAMAN SPECTROSCOPY; PREPARATION OF OXIDES;
D O I：
10.1007/BF00764357
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：
Laser Raman spectroscopy (LRS) was used to characterize the hydrated and dehydrated states of surface-supported Mo6+ on Davison 952 silica gel. Silica-supported Mo samples were prepared from MO2(eta3-C3H5)4 and (eta5-C5H5)2Mo2(CO)4. Metal loadings of 5.1-7.8 wt% Mo were studied. Crystallites of MoO3 were not observed at these high loadings. An upper limit for dispersing dehydrated, isolated Mo6+ was found at about 1 Mo atom/nm2, which corresponds to the isolated silanol density of silica.
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页码：77 / 83
页数：7
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