Investigation of the mechanism of catalytic recyclization of furan to thiophene
Investigation of the mechanism of catalytic recyclization of furan to thiophene
复制标题
呋喃催化循环制噻吩机理研究
DOI：
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
A. V. Mashkina
中科院分区：
文献类型：
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作者：
A. V. Mashkina
在不同催化剂上由呋喃和硫化氢生成噻吩的研究表明，催化剂的活性随着刘易斯酸中心的强度和浓度的增加而增加。红外光谱分析表明，当硫化氢在氧化铝表面的覆盖度大于单层时，不会发生解离吸附。反应机理是通过形成表面中间体，包括呋喃环上的α-碳原子与刘易斯酸中心和硫化氢分子中的硫原子的配位作用。
Investigation of the formation of thiophene from furan and hydrogen sulfide at various catalysts showed that the activity of the catalysts increases with increase in the strength and concentration of Lewis acid centers. It was found by IR spectroscopy that if the degree of coverage of the aluminum oxide surface with hydrogen sulfide is higher than monolayer its dissociative chemisorption does not occur. Mechanism was postulated wich assume that the reaction takes place through stage with the formation of a surface intermediate, including coordination of the α-carbon atoms of the furan ring with the Lewis acid center and with the sulfur atom of molecular hydrogen sulfide.