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    • 49. 发明授权
    • Selective hydrogenation of vinyltoluene
    • 乙烯基甲苯的选择性氢化
    • US4379027A
    • 1983-04-05
    • US334346
    • 1981-12-24
    • John M. KlosekMargaret M. Wu
    • John M. KlosekMargaret M. Wu
    • C07C7/163B01D3/14C07C5/10C07C7/04
    • C07C7/163
    • This invention provides a process for obtaining m-methylstyrene from a mixture with p-methylstyrene that comprises hydrogenating a mixture of p-methylstyrene and m-methylstyrene in the presence of a zeolite having a Constraint Index of about 1 to about 12, a silica to alumina mole ratio of at least about 12, and a dried crystal density of not less than about 1.6 grams per cubic centimeter, modified with at least one element of Group IA, IIA, IVB, or VB of the Periodic Chart of the Elements and a metal of Group VIII of the Periodic Chart of the Elements; thereby obtaining a mixture of m-methylstyrene and p-ethyltoluene, and removing p-ethyltoluene by distillation.
    • 本发明提供从与对甲基苯乙烯的混合物中获得间甲基苯乙烯的方法,该方法包括在约1至约12的约束指数的沸石存在下氢化对甲基苯乙烯和间甲基苯乙烯的混合物, 氧化铝摩尔比为至少约12,干燥晶体密度不小于约1.6克/立方厘米,用元素周期表的IA,IIA,IVB或VB族元素的至少一种元素修饰, 元素周期表第八组金属; 从而获得间甲基苯乙烯和对乙基甲苯的混合物,并通过蒸馏除去对乙基甲苯。