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    • 23. 发明授权
    • Catalyst composition and method for selective dehydrogenation
    • 催化剂组合物和选择性脱氢方法
    • US4798911A
    • 1989-01-17
    • US75375
    • 1987-07-20
    • Carl M. LentzBruce L. GustafsonPaul S. Wehner
    • Carl M. LentzBruce L. GustafsonPaul S. Wehner
    • B01J23/89C07B35/04C07B61/00C07C5/00C07C5/32C07C5/333C07C11/02C07C37/06C07C39/15C07C41/18C07C43/215C07C45/65C07C47/548C07C49/794C07C51/347C07C63/64C07C69/76C07C69/94C07C317/14C07C5/367C07C39/12
    • C07C41/18B01J23/8926C07C37/001C07C37/06C07C5/325C07C5/3337C07C67/297C07C67/317C07C2101/14C07C2521/18C07C2523/44C07C2523/72C07C2523/89
    • A method for selective dehydrogenation of a compound, comprising contacting a compound of the formula ##STR1## wherein each R.sup.1, R.sup.2, R.sup.3 and R.sup.4 is independently selected from the group consisting of H, (C.sub.1 -C.sub.20) alkyl, (C.sub.3 -C.sub.20) cycloalkyl, (C.sub.6 -C.sub.20) aryl, (C.sub.7 -C.sub.20) alkylaryl, (C.sub.7 -C.sub.20) aralkyl groups, as well as substituted (C.sub.1 -C.sub.20) alkyl, (C.sub.3 -C.sub.20) cycloalkyl, (C.sub.6 -C.sub.20) aryl, (C.sub.7 -C.sub.20) aralkyl and (C.sub.7 -C.sub.20) arylalkyl moieties, optionally further substituted with --OR, wherein R is R.sup.1, R.sup.2, R.sup.3 or R.sup.4 ; and wherein R.sup.1 and R.sup.2 or R.sup.3 and R.sup.4 may be joined as part of a ring structure, at a dehydrogenation temperature in the presence of a catalyst comprising about 0.01 wt %-19.9 wt % Pd and about 0.01 wt %-19.9 wt % Cu on a carbon support, wherein the total amount of (Pd+Cu) on the support is about 0.02 wt % to 20 wt %, the weight ratio of Pd:Cu is about 1:1 to 10:1, and the carbon support has a surface area of at least about 100 m.sup.2 /g and is essentially free of reactive sulfur.A selective dehydrogenation catalyst having the composition described supra is disclosed as is a method of preparing the same. This catalyst is highly selective for dehydrogenating a variety of substrates while minimizing the formation of unwanted hydrogenolysis by-products.
    • 一种化合物的选择性脱氢的方法,包括使下式化合物与其中每个R 1,R 2,R 3和R 4独立地选自H,(C 1 -C 20)烷基,(C 3 -C 20) 环烷基,(C 6 -C 20)芳基,(C 7 -C 20)烷基芳基,(C 7 -C 20)芳烷基以及取代的(C 1 -C 20)烷基,(C 3 -C 20)环烷基,(C 6 -C 20) C7-C20)芳烷基和(C7-C20)芳烷基部分,任选进一步被-OR取代,其中R是R 1,R 2,R 3或R 4; 并且其中R 1和R 2或R 3和R 4可以作为环结构的一部分在脱氢温度下在催化剂存在下接合,所述催化剂包含约0.01重量%-19.9重量%的Pd和约0.01重量%-19.9重量%的Cu 碳载体,其中载体上的(Pd + Cu)的总量为约0.02重量%至20重量%,Pd:Cu的重量比为约1:1至10:1,并且碳载体具有 表面积至少约100m 2 / g,基本上不含活性硫。 作为其制备方法,公开了具有上述组成的选择性脱氢催化剂。 该催化剂对于使各种底物脱氢而具有高选择性,同时最小化不想要的氢解副产物的形成。
    • 25. 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。
    • 28. 发明申请
    • METHOD OF MANUFACTURING 4,4
    • US20150158800A1
    • 2015-06-11
    • US14401098
    • 2013-05-14
    • Honshu Chemical Industry Co., Ltd.
    • Kazuhito AshidaYuki HashimotoTomoya YamamotoXuwang Lu
    • C07C37/06C07C37/52C07C37/20
    • C07C37/06C07C37/20C07C37/52C07C39/15C07C39/23C07C39/17
    • To achieve the object of providing a new method of manufacturing 4,4″-dihydroxy-m-terphenyl, the present invention provides a method of manufacturing 4,4″-dihydroxy-m-terphenyl expressed by General Formula (4) below, characterized in that such method uses a 2-cyclohexene-1-one expressed by General Formula (1) below or 3-hydroxycyclohexane-1-one expressed by General Formula (2) below, and phenol expressed by General Formula (3) below as materials and implements Step (A), Step (B), and Step (C) below, in this order, or Step (D) and Step (C) below, in this order: (In the formulas, each R2 independently represents an alkyl group, alkoxy group, aromatic hydrocarbon group, or halogen atom, while m independently indicates 0 or an integer of 1 to 4, where R2 substitution does not occur in the third position when m is 1 or greater, and when m is 2 or greater, R2's may be identical or different, and R2 substitution does not occur in two positions of the same carbon atom. In addition, R2 and m in General Formula (1) may be identical to or different from R2 and m in General Formula (2), respectively.) (In the formula, each R1 independently represents an alkyl group, alkoxy group, aromatic hydrocarbon group, halogen atom, or hydroxyl group, while n indicates 0 or an integer of 1 to 4, where R1's may be identical or different when n is 2 or greater.) Step (A): Step to obtain a 1,1,3-trisphenol by causing the 2-cyclohexene-1-one or 3-hydroxycyclohexane-1-one and phenol to react with each other in the presence of a catalyst. Step (B): Step to obtain a bis(4-hydroxyphenyl)cyclohexene by causing the 1,1,3-trisphenol to undergo breakdown reaction. Step (C): Step to obtain a 4,4″-dihydroxy-m-terphenyl by dehydrogenating the bis(4-hydroxyphenyl)cyclohexene. Step (D): Step to obtain a bis(4-hydroxyphenyl)cyclohexene by causing the 2-cyclohexene-1-one or 3-hydroxycyclohexane-1-one and phenol to react with each other in the presence of a catalyst. (In the formula, each R1 and n is independently the same as the corresponding items in General Formula (3), respectively, while R2 and m are the same as the corresponding items in General Formula (1) or General Formula (2), respectively.)