环己酮二聚物脱氢制邻苯基苯酚反应及催化剂研究

环己酮二聚物常压气相脱氢制邻苯基苯酚(OPP),贵金属为活性组份,η-Al_2O_3为载体,详细考察了不同活性组份含量及氢氧化物(A)、碳酸盐(B)和硫酸盐(C)分别作为助催化剂的反应结果。通过对催化剂金属表面积、表面酸度、碱度的测定,并与反应结果关联,明确了影响环己酮二聚物脱氢反应的因素。借助色谱-质谱技术,检测到一种新的反应中间物种,提出二聚物脱氢过程。

Study of Dehydrogenation of o-Cyelohexylcyclohexanone to o-Phenylphenol and Its Catalyst

A noble metal and η-alumina are selected as active component and support res-pectively and hydroxide(A),carbonate(B)and sulfate(C)as co-catalysts for dehyd-rogenation of o-cyclohexylcyclohexanone to produce o-phenylphenol under atmosph-eric pressure.The dehydrogenating activity is correlated with the amount of activecomponent,the specific co-catalyst employed,metal surface area,as well as acidityand basicity on the catalyst surface.A new reaction intermediate is detected byGC-MS and a new dehydrogenation mechanism is proposed.