Pyrolysis compositions from silver salts of polycarboxylic acids
    2.
    发明授权
    Pyrolysis compositions from silver salts of polycarboxylic acids 失效
    聚羧酸银盐的热解组合物

    公开(公告)号:US4065442A

    公开(公告)日:1977-12-27

    申请号:US519640

    申请日:1974-10-31

    摘要: High surface area silver olefin oxide catalysts with orderly distribution of pore size are prepared by pyrolysis of silver salts of di- and polycarboxylic acids or mixtures thereof to carbon-like polymers containing silver, followed by combustion of the carbonaceous material. The resulting unsupported or supported silver catalysts are useful for oxidations, cyclizations, isomerizations, and cracking. The carbon-like polymers containing silver, before combustion of the carbonaceous material, find utility as bactericides and catalysts. Extraction of the silver yields high surface area carbon adsorbents of predetermined structure.

    摘要翻译: 通过将二羧酸或多羧酸的银盐或其混合物热分解成含有银的碳样聚合物,随后碳质材料的燃烧,制备孔径有序分布的高表面积的烯烃氧化物催化剂。 所得的未负载或负载的银催化剂可用于氧化,环化,异构化和开裂。 在碳质材料燃烧之前,含有银的碳类聚合物可用作杀菌剂和催化剂。 银的提取产生具有预定结构的高表面积碳吸附剂。

    Suppression of diglycol ether ester in chromium (III) catalyzed ethylene
oxide reaction with aromatic carboxylic acids
    3.
    发明授权
    Suppression of diglycol ether ester in chromium (III) catalyzed ethylene oxide reaction with aromatic carboxylic acids 失效
    二烯丙醚醚在铬(III)催化环氧乙烷与芳族羧酸反应中的抑制作用

    公开(公告)号:US4271312A

    公开(公告)日:1981-06-02

    申请号:US132206

    申请日:1971-04-07

    IPC分类号: C07C67/26

    CPC分类号: C07C67/26

    摘要: Chromium (III) catalysis of the reaction between ethylene oxides (ethylene oxide and 1,2-propylene oxide) and aromatic carboxylic acids at temperatures in the range from 50.degree. to 180.degree. C. are rapid but produce excessive amounts of diglycol ether ester (2-hydroxyethoxyethanol or 2-hydroxy-2-methylethoxy 2-methylethanol) which is present as the diglycol ether ester of the aromatic carboxylic acid and is a contaminent hard to remove from the desired 2-hydroxyethyl ester of the aromatic carboxylic acid. The use of an amine, in such ethylene oxide reaction with aromatic carboxylic acid suppresses the formation of diglycol ether and increases the conversion of aromatic carboxylic acid to the desired 2-hydroxyethyl ester thereof.

    摘要翻译: 在环境氧化物(环氧乙烷和1,2-环氧丙烷)和芳族羧酸之间的反应中,在50至180℃的温度范围内的铬(III)催化作用是快速的,但是产生过量的二甘醇醚酯( 2-羟基乙氧基乙醇或2-羟基-2-甲基乙氧基-2-甲基乙醇),其作为芳族羧酸的二甘醇醚酯存在,并且是难以从芳族羧酸的所需2-羟乙基酯除去的污染物。 在与芳族羧酸的这种环氧乙烷反应中使用胺抑制二醇二醚的形成,并增加芳族羧酸转化为所需的2-羟乙基酯。

    Butane oxidation to acetic acid
    4.
    发明授权
    Butane oxidation to acetic acid 失效
    丁烷氧化成乙酸

    公开(公告)号:US4111986A

    公开(公告)日:1978-09-05

    申请号:US788984

    申请日:1977-04-19

    IPC分类号: C07C51/215 C07C51/20

    CPC分类号: C07C51/215

    摘要: Oxidizing butane to acetic acid which comprises contacting a sufficient concentration of an oxygen-containing gas with normal butane in the presence of catalyst consisting essentially of bromine and cobalt to initiate a self-sustaining exothermic reaction.

    摘要翻译: 将乙酸氧化成乙酸,其包括在基本上由溴和钴组成的催化剂存在下使足够浓度的含氧气体与正丁烷接触以引发自持放热反应。

    Removal of bromine from acetic acid
    5.
    发明授权
    Removal of bromine from acetic acid 失效
    从乙酸中除去溴

    公开(公告)号:US4228307A

    公开(公告)日:1980-10-14

    申请号:US970226

    申请日:1978-12-18

    CPC分类号: C07C51/487

    摘要: Acetic acid of 95 to 100 weight percent strength containing ionic and coordinate bromide impurities can be purified to a bromine content of less than 3 ppm by the sequence of steps comprising catalytic hydrogenating said acetic acid, treating the hydrogenated acetic acid with a solid absorbant and separating acetic acid therefrom.

    摘要翻译: 通过包括催化氢化所述乙酸,用固体吸收剂处理氢化乙酸和分离的步骤的顺序,可纯化含有离子和配位溴化物杂质的95至100重量%浓度的乙酸至小于3ppm的溴含量 乙酸。

    Bromine removal from acetic acid
    6.
    发明授权
    Bromine removal from acetic acid 失效
    从乙酸中溴去除

    公开(公告)号:US4227971A

    公开(公告)日:1980-10-14

    申请号:US970222

    申请日:1978-12-18

    CPC分类号: C07C51/487

    摘要: Concentrated acetic acid of 95 to 100 weight percent concentration containing both ionic and coordinate bromine can be successfully purified to a bromine content of less than 3 ppm by the sequential steps of catalytic hydrogenation, contacting the resulting acetic acid with alkali metal hydroxide, carbonate or bicarbonate, and then distilling acetic acid from the alkali metal.

    摘要翻译: 通过催化氢化的顺序步骤,可将成功纯化含有离子和配位溴的95至100重量%浓度的浓缩乙酸成溴至少于3ppm,使所得乙酸与碱金属氢氧化物,碳酸盐或碳酸氢盐接触 ,然后从碱金属中蒸馏出乙酸。