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Indian Journal of Engineering and Materials Sciences (IJEMS) >
IJEMS Vol.19 [2012] >
IJEMS Vol.19(3) [June 2012] >
| Title: | Synthesis, characterization and catalytic properties of Cr-containing silica gel |
| Authors: | Bai, Yongxiao
Hu, Weiwei
Hu, Xinjun
Bao, Yan
Zhu, Bochao
Yao, Peihong
Jia, Junji |
| Keywords: | Silica gel
Cethyltriethylammonium bromide
Chromium nitrate nonahydrate
Framework
Coordination |
| Issue Date: | Jun-2012 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | Chromium-containing
silica gel with variable Si/Cr ratios has been synthesized at ambient
temperature by a sol-gel method with the addition of different amounts of Cr precursor. A combination of measurements is used to
characterize the chromium-containing silica gel. All the analysis indicates following this synthesis route, it is possible to prepare materials without forming extra wall Cr2O3.
And the results show that polychromate is absent in the silica gel materials,
while the Cr (VI) of calcined chromium-containing silica gel is present as a
monochromate species. Also, it has high activity for the selective oxidation of styrene, which is analyzed periodically by means of gas
chromatograph. |
| Page(s): | 209-214 |
| CC License: |  CC Attribution-Noncommercial-No Derivative Works 2.5 India |
| ISSN: | 0975-1017 (Online); 0971-4588 (Print) |
| Source: | IJEMS Vol.19(3) [June 2012]
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