Synthesis, characterization and catalytic properties of Cr-containing silica gel

Yongxiao Bai; Weiwei Hu; Xinjun Hu

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Synthesis, characterization and catalytic properties of Cr-containing silica gel

机译：Synthesis, characterization and catalytic properties of Cr-containing silica gel

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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 Cr_2O_3. 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.

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《Indian journal of engineering and materials sciences》 |2012年第3期|209-214|共6页
作者
Yongxiao Bai; Weiwei Hu; Xinjun Hu;
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作者单位

Institute of Material Science and Engineering, Key Laboratory of Magnetism and Magnetic Materials of the Ministry of Education, Lanzhou University, Lanzhou 730000, China.;

Institute of Material Science and Engineering, Key Laboratory of Magnetism and Magnetic Materials of the Ministry of Education, Lanzhou University, Lanzhou 730000, China;

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原文格式 PDF
正文语种英语
中图分类工程材料学;
关键词
Silica gel; Cethyltriethylammonium bromide; Chromium nitrate nonahydrate; Framework; Coordination;

Synthesis, characterization and catalytic properties of Cr-containing silica gel

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