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    • 82. 发明授权
    • Process for the production of o-phenylphenol
    • 邻苯基苯酚生产工艺
    • US4080390A
    • 1978-03-21
    • US695039
    • 1976-06-11
    • Juichi Imamura
    • Juichi Imamura
    • B01J23/00C07B61/00C07C27/00C07C37/06C07C37/07C07C39/15C07C67/00
    • C07C37/06B01J21/04B01J21/08B01J21/12B01J23/745B01J23/8906B01J23/8946B01J35/023B01J35/1019B01J35/1042B01J37/0201B01J37/18
    • A process for the production of o-phenylphenol in the presence of a catal composed of a .gamma.-alumina or silica-alumina support having a BET surface area of 150 - 300 m.sup.2 /g, a pore capacity of 0.50 - 0.85 ml/g and an iron content of at most 0.1 % by weight in terms of Fe.sub.2 O.sub.3 and an alumina content of at least 90 %, the support carrying thereon platinum in an amount of 0.1 - 5.0 % by weight based on the support, iridium in an amount of 0.1 - 0.4 times that of the platinum and an alkali metal oxide in an amount of 0.5 - 8.0 % by weight of the support. o-Phenylphenol is prepared at a high selectivity over a long period of time by supplying onto the catalyst maintained at 300.degree. - 420.degree. C o-cyclohexylphenol or a dehydrodimerized condensate obtained by aldol condensation of cyclohexanone together with gaseous hydrogen in an amount per hour in terms of liquid volume of 0.1 - 1.5 times the volume of the catalyst, and elevating the reaction temperature stepwise or continuously with the lapse of the reaction time, while slowing down, if necessary, the rate of supplying the starting materials, to effect a dehydrogenation reaction.
    • 在由γ-氧化铝或二氧化硅 - 氧化铝载体组成的催化剂存在下制备邻苯基苯酚的方法,所述催化剂的BET表面积为150-300m2 / g,孔容为0.50〜0.85ml / g, 铁含量以Fe 2 O 3为最多0.1重量%,氧化铝含量为至少90%,载体上载持量为0.1-5.0重量%的载体,铱的量为0.1 - 铂的量的0.4倍,碱金属氧化物的量为载体重量的0.5〜8.0%。 通过向保持在300-420℃邻苯二酚的催化剂供应邻苯二酚,通过将环己酮与气态氢醇缩合得到的脱氢二聚缩合物以每小时的量 在液体体积为催化剂体积的0.1〜1.5倍的范围内,随着反应时间的延长逐步或连续地升高反应温度,同时如果需要,可以减缓原料的供给速度, 脱氢反应。