| 可磁回收掺锑二氧化锡固体超强酸催化剂 |
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| 引用本文： | 钟辉,张学俊,李搏,周蓉,欧阳寒梅,张文坤.可磁回收掺锑二氧化锡固体超强酸催化剂[J].纳米科技,2012(2):59-66. |
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| 作者姓名： | 钟辉 张学俊 李搏 周蓉 欧阳寒梅 张文坤 |
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| 作者单位： | [1]贵州大学化学与化学工程学院,贵州贵阳550003 [2]贵州大学贵州省发酵工程与生物制药重点实验室,贵州贵阳550003 [3]黔西南康达生物能源科技有限公司,贵州兴义562400 |
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| 基金项目： | 国家教育部春晖计划资助项目（编号：S2005-2-52005）.贵州省科技攻关项目（（2000）1163号,黔科合SY字[2009]3096号）,贵州大学研究生创新基金项目（2010011号） |
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| 摘 要： | 对磁性掺锑二氧化锡纳米超强酸催化剂进行了合成研究，采用XRD、TEM、IR对纳米磁性固体催化剂样品进行表征，结果说明，该方法合成的纳米微粉具有十分完好的晶体结构，催化剂在波长1403、1154、1042和941cm-1处均有吸收峰出现，说明催化剂中形成了类似于硫酸盐中的S=O键和类似于有机硫酸酯中的高共价S=O键。利用Hammett指示剂法对固体超强酸进行了酸强度表征，酸强度H0〈-13．8，酯化率为93％。
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| 关 键 词： | 磁性 掺锑二氧化锡 纳米材料 固体超强酸 催化剂 |
Solid Superacid Catalyst Prepared by the Magnetic Stannic Oxide Doped with Antimony |
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| Authors: | ZHONG Hui ZHANG Xue-jun LI Bo ZHOU Rong OUYANG Han-mei ZHANG Wen-kun |
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| Affiliation: | 1. School of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550003, China)(2. Guizhou Province Key Laboratory of Fermentation Engineering ＆ Biological Pharmacy, Guiyang 550003, China)(3. Southwest Guizhou Kangda Bioenergy Technology Co.,Ltd, Xingyi 562400, China) |
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| Abstract: | The synthesis of a magnetic Sb-doped SnO2 superacid catalysts was investigated, and the corresponding prop- erties were characterized by XRD, TEM, IR and TG. XRD and TEM. The results showed that the nano-powder synthe- sized has a crystal structure which is very important to solid catalysts. The IR analysis indicated the absorption peak were at wavelengths 1403, 1154, 1042 and 941cm-1, suggesting that the catalyst loaded with sulfuric acid radicals contains S= O that was similar the high covalent bond S=O in organic compound sulfate, which is an important condition for the for- mation of superacid. The Hammett indicator law was employed to measure the acid strength of solid super acids, which was up to H0〈-13.8 and the ratio of esterification of the catalyst was more than 93%. |
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| Keywords: | magnetic Sb-doped SnO2 nanometer materials solid superacid catalyst |
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