Process for production of aromatic polyethers with alkali metal
carbonate/bicarbonate/fluoride cocatalyst
    21.
    发明授权
    Process for production of aromatic polyethers with alkali metal carbonate/bicarbonate/fluoride cocatalyst 失效
    用碱金属碳酸盐/碳酸氢盐/氟化物助催化剂生产芳香族聚醚的方法

    公开(公告)号:US4952665A

    公开(公告)日:1990-08-28

    申请号:US234793

    申请日:1988-08-22

    IPC分类号: C08G65/38 C08G65/40 C08L81/06

    摘要: An improved process for producing aromatic polyethers by condensation polymerizing aromatic dihydroxy compounds represented by the general formula: HO--Ar--OH and aromatic dichloro compounds represented by the general formula: Cl--Ar.sup.1 --Y--Ar.sup.2 --Cl, or condensation polymerizing monohydroxymonochloro aromatic compounds represented by the general formula: HO--Ar.sup.1 --Y--Ar.sup.2 --Cl (in the above formulae, Ar, Ar.sup.1, Ar.sup.2 are as defined in the specification) in the presence of alkali metal compounds comprising a combination of alkali metal carbonates comprising carbonate and/or hydrogencarbonate of an alkali metal, e.g., potassium, and alkali metal fluorides.In accordance with the present process, high molecular weight aromatic polyethers can be efficiently produced from aromatic chloro compounds which are inexpensive and easily available.

    High-selective production method of di(aminomethyl)-substituted aromatic compound
    22.
    发明申请
    High-selective production method of di(aminomethyl)-substituted aromatic compound 有权
    二(氨基甲基)取代芳族化合物的高选择性生产方法

    公开(公告)号:US20050277790A1

    公开(公告)日:2005-12-15

    申请号:US10781884

    申请日:2004-02-20

    摘要: A di(aminomethyl)-substituted aromatic compound is produced by a two-stage hydrogenation. In the first stage, an aromatic dinitrile is hydrogenated into a cyano(aminomethyl)-substituted aromatic compound in the presence of a Pd-containing catalyst. The resultant cyano(aminomethyl)-substituted aromatic compound is then hydrogenated in the second stage into the target di(aminomethyl)-substituted aromatic compound in the presence of a Ni- and/or Co-containing catalyst. By the above method, the di(aminomethyl)-substituted aromatic compound is produced in a high selectivity and a sufficiently high yield without reducing the catalyst life.

    摘要翻译: 二(氨基甲基)取代的芳族化合物是通过两阶段氢化制备的。 在第一阶段中,在含Pd催化剂的存在下,将芳族二腈氢化为氰基(氨基甲基)取代的芳族化合物。 然后将所得的氰基(氨基甲基)取代的芳香族化合物在Ni-和/或含Co催化剂存在下,在第二阶段中氢化成目标二(氨基甲基) - 取代的芳族化合物。 通过上述方法,在不降低催化剂寿命的情况下以高选择性和足够高的产率制备二(氨基甲基)取代的芳族化合物。

    Process for producing a nitrile compound
    23.
    发明申请
    Process for producing a nitrile compound 有权
    腈化合物的制造方法

    公开(公告)号:US20050014944A1

    公开(公告)日:2005-01-20

    申请号:US10865824

    申请日:2004-06-14

    CPC分类号: C07C253/28 C07C255/51

    摘要: In a process for producing a nitrile compound comprising introducing a carbon ring or heterocyclic compound having organic substituents, ammonia and the air into a reactor and reacting the introduced compounds in the presence of a catalyst, during the reaction, a residual gas obtained after the formed nitrile compound is separated from a reaction gas discharged from the reactor is recycled to the reactor in an amount of 10 to 60% by volume based on the amount of the fresh raw material gas supplied to the reactor and the ratio of the amount by mole of molecular oxygen to the amount by mole of the organic substituent in the carbon ring or heterocyclic compound having organic substituents supplied to the reactor (O2/organic substituent) is kept within 1.5 to 7. The reaction is achieved under an advantageous condition and the nitrile compound can be produced industrially advantageously at a higher yield.

    摘要翻译: 在制备腈化合物的方法中,包括将具有有机取代基的碳环或杂环化合物,氨和空气引入反应器中并在催化剂存在下使引入的化合物反应,在反应过程中获得的残余气体 将从反应器排出的反应气体中分离的腈化合物以供给反应器的新鲜原料气体的量为基准,以10〜60体积%的量循环至反应器, 分子氧与提供给反应器的有机取代基的碳环或杂环化合物(O 2 /有机取代基)中的有机取代基的摩尔比保持在1.5〜7的范围内。在有利条件下进行反应,并且腈化合物 可以以较高的产率在工业上有利地生产。

    Process for producing nitrile compound and catalyst used therefor
    24.
    发明授权
    Process for producing nitrile compound and catalyst used therefor 有权
    制备腈化合物的方法和用于其的催化剂

    公开(公告)号:US6107510A

    公开(公告)日:2000-08-22

    申请号:US225553

    申请日:1999-01-05

    IPC分类号: C07C253/28 C07C253/00

    CPC分类号: C07C253/28 C07D213/85

    摘要: There are disclosed a process for producing a nitrile compound which comprises catalytically reacting an alkyl group-substituted aromatic compound or an alkyl group-substituted heterocyclic compound with a mixed gas containing ammonia and oxygen in the presence of 1 a catalyst comprising a vanadium oxide, a chromium oxide, a boron oxide, a molybdenum oxide, and an oxide of an alkali metal or an alkaline earth metal or 2 a catalyst comprising a vanadium oxide, a chromium oxide, a boron oxide, an alkali metal oxide, and a heteropolyacid. According to the above process and by virtue of the specific catalyst, it is made possible to produce a nitrile compound having an aromatic ring or a heterocyclic ring in an extremely advantageous manner, that is, in high yield at high selectivity to the objective product.

    摘要翻译: 公开了一种制备腈化合物的方法,该方法包括在+ E,crc 1 + EE催化剂存在下使烷基取代的芳族化合物或烷基取代的杂环化合物与含有氨和氧的混合气体催化反应 包括氧化钒,氧化铬,氧化硼,氧化钼和碱金属或碱土金属的氧化物,或+ E,crc 2 + EE,包含氧化钒,氧化铬,硼 氧化物,碱金属氧化物和杂多酸。 根据上述方法,通过具体的催化剂,可以非常有利地制备具有芳香环或杂环的腈化合物,即高目标产物的高选择性。

    Method for heat recovery and utilization by use of chemical energy of
synthesis and decomposition of methyl formate
    25.
    发明授权
    Method for heat recovery and utilization by use of chemical energy of synthesis and decomposition of methyl formate 失效
    通过使用甲酸甲酯的合成和分解的化学能来回收和利用热的方法

    公开(公告)号:US5965769A

    公开(公告)日:1999-10-12

    申请号:US4101

    申请日:1998-01-07

    摘要: There are herein disclosed a method for heat recovery and heat utilization by the use of chemical energy which comprises the steps of doing the heat recovery by the following formula (I), and doing the heat utilization by the following formula (I'):HCOOCH.sub.3 .fwdarw.CH.sub.3 OH+CO (I)CH.sub.3 OH+CO.fwdarw.HCOOCH.sub.3 (I')the reaction of the formula (I') being carried out in the presence of an alkali fluoride and zinc oxide. According to the present invention, steam or hot water can be generated at a high temperature of 100.degree. C. or more by the use of a factory waste heat or a river water at a low temperature of 100.degree. C. or less as a heat source from which heat has scarcely been utilized so far, and the thus generated steam or hot water can effectively be used as a heat source or be used in an air conditioner. The catalyst which comprises the alkali fluoride and zinc oxide is used for preparing methyl formate or CO gas according to the formula (I) or (I').

    摘要翻译: 本文公开了通过使用化学能进行热回收和热利用的方法,其包括以下步骤:通过下式(I)进行热回收,并通过下式(I')进行热利用:HCOOCH 3 - > CH 3 OH + CO(I)CH 3 OH + CO-> HCOOCH 3(I')式(I')的反应是在碱金属氟化物和氧化锌的存在下进行的。 根据本发明,可以在100℃以下的高温下使用工业废热或在100℃以下的低温的河水中作为热量,在100℃以上的高温下产生蒸汽或热水 迄今为止几乎没有使用热量的源头,因此产生的蒸汽或热水可以有效地用作热源或用于空调。 包含碱金属氟化物和氧化锌的催化剂用于制备式(I)或(I')的甲酸甲酯或CO气体。

    Process for producing methyl methacrylate
    26.
    发明授权
    Process for producing methyl methacrylate 失效
    生产甲基丙烯酸甲酯的方法

    公开(公告)号:US5739379A

    公开(公告)日:1998-04-14

    申请号:US575640

    申请日:1995-12-20

    CPC分类号: C07C67/327

    摘要: A process for producing methyl methacrylate through gas-phase catalytic reaction of methyl .alpha.-hydroxyisobutyrate as the starting raw material which process comprises feeding methanol in an amount by weight of 0.1 to 3.0 times the amount of the methyl .alpha.-hydroxyisobutyrate in a reaction system and proceeding with the gas-phase catalytic reaction in the presence of a catalyst comprising a synthetic faujasite zeolite having a free alkali content of at most 0.1 milliequivalent/g or a catalyst comprising a molded product which is formed by molding a synthetic faujasite zeolite and a clay in an aqueous solution or suspension having a pH of less than 9. According to the above process, it is possible to produce methyl methacrylate in high yield over a long period of time by the use of methyl .alpha.-hydroxyisobutyrate as the starting raw material.

    摘要翻译: 通过甲基α-羟基异丁酸甲酯作为起始原料的气相催化反应生产甲基丙烯酸甲酯的方法,该方法包括在反应体系中加入甲基量为α-反丁烯酸甲酯的量的0.1至3.0倍, 在包含游离碱含量至多为0.1毫当量/ g的合成八面沸石的催化剂存在下进行气相催化反应,或包含通过模制合成八面沸石和粘土形成的模制产品的催化剂 在pH小于9的水溶液或悬浮液中。根据上述方法,可以通过使用α-羟基异丁酸甲酯作为起始原料,以高产率长时间生产甲基丙烯酸甲酯。

    Preparation of improved catalyst composition
    27.
    发明授权
    Preparation of improved catalyst composition 失效
    改进的催化剂组合物的制备

    公开(公告)号:US4305842A

    公开(公告)日:1981-12-15

    申请号:US119778

    申请日:1980-02-08

    摘要: A process for preparing a catalyst composition containing a copper oxide, a zinc oxide and an aluminum oxide as essential components and, if desired, containing a boron oxide, which comprises the following steps:(a) a step of precipitating from an aqueous solution of a water-soluble copper salt, which solution, if desired, may contain a water-soluble boron compound, a copper component, together with a boron component if the boron compound is present, with the use of ammonium carbonate or ammonium bicarbonate as a precipitant;(b) a step of precipitating from an aqueous solution of a water-soluble zinc salt, which solution, if desired, may contain a water-soluble boron compound, a copper component, together with a boron component if the boron compound is present, with the use of an alkali hydroxide as a precipitant; and(c) a step of calcing a mixture of the precipitates obtained in the steps (a) and (b) in the presence of an alumina precursor compound.The catalyst thus obtained is useful in synthesizing methanol from a mixed gas comprising carbon monoxide and/or carbon dioxide and hydrogen.

    摘要翻译: 一种制备含有氧化铜,氧化锌和氧化铝作为必要组分的催化剂组合物的方法,以及如果需要,含有氧化硼,其包括以下步骤:(a)从水溶液中沉淀 如果需要,该溶液可以含有水溶性硼化合物,铜组分,如果存在硼化合物则与硼组分一起使用,使用碳酸铵或碳酸氢铵作为沉淀剂 ; (b)从水溶性锌盐的水溶液中析出的步骤,如果需要,该溶液可以含有水溶性硼化合物,铜成分以及含硼化合物的硼成分, 使用碱性氢氧化物作为沉淀剂; 和(c)在氧化铝前体化合物的存在下压制步骤(a)和(b)中得到的沉淀物的混合物的步骤。 由此获得的催化剂可用于从包含一氧化碳和/或二氧化碳和氢气的混合气体中合成甲醇。