Grafting SnCl4 catalyst as a novel solid acid for the synthesis of 3-methylbut-3-en-1-ol
Grafting SnCl4 catalyst as a novel solid acid for the synthesis of 3-methylbut-3-en-1-ol
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DOI：
10.1016/j.cattod.2011.05.019
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发表时间：
2011-09
期刊：
影响因子：
5.3
通讯作者：
Min Ji;Liu Xuefeng;Junhu Wang;Jia-Nan Zhu;Liming Zhou
中科院分区：
文献类型：
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作者：
Min Ji;Liu Xuefeng;Junhu Wang;Jia-Nan Zhu;Liming Zhou
采用无机载体接枝sncl4作为新型固体酸催化剂，催化异丁烯与甲醛的Prins缩合反应生成3-甲基丁-3-烯-1-醇（MBOH）。采用SiO2、SiO2 - al2o3和γ- al2o3三种载体制备催化剂，研究了在不同载体上形成的氯化锡的结构和酸性质。结果表明，在100℃的低反应温度下，接枝sncl4在sio2上表现出较高的活性和选择性，甲醛转化率为55%，MBOH选择性为92%。snclx - sio2催化剂的优异性能归因于其锡核的低电子密度和较强的路易斯酸度。
Grafting SnCl4on inorganic support as a novel solid acid catalyst was used to catalyze the Prins condensation reaction of isobutene with formaldehyde to produce 3-methylbut-3-en-1-ol (MBOH). Three supports of SiO2, SiO2–Al2O3and γ-Al2O3were used to prepare the catalysts, and the structure and acid property of the tin chloride species formed over different supports was investigated. It was found that the SnCl4grafted on SiO2exhibited high activity and selectivity at a low reaction temperature of 100°C, with formaldehyde conversion of 55% and MBOH selectivity of 92%. The superior performance of SnClx–SiO2catalyst was attributed to its low electron density of tin nucleus and strong Lewis acidity.