Preparation of 4-pentenoates
    11.
    发明授权
    Preparation of 4-pentenoates 失效
    4-戊烯酸酯的制备

    公开(公告)号:US4529815A

    公开(公告)日:1985-07-16

    申请号:US608459

    申请日:1984-05-09

    CPC分类号: C07C67/333

    摘要: 4-Pentenoates are prepared by isomerization of isomeric pentenoates in the presence of a catalyst, by a process in which isomeric pentenoates are treated at elevated temperatures with an acidic ion exchanger or acidic zeolite which contains a noble metal of group eight of the periodic table, and the 4-pentenoate is distilled off from the reaction mixture.

    摘要翻译: 通过在酸性离子交换剂或包含元素周期表第八族的贵金属的酸性沸石的高温下处理异构戊烯酸酯的方法,在催化剂存在下异构戊烯酸酯制备4-戊烯酸酯, 并从反应混合物中蒸馏出4-戊烯酸酯。

    Preparation of C.sub.1 -C.sub.4 -alkyl pent-3-enoates
    13.
    发明授权
    Preparation of C.sub.1 -C.sub.4 -alkyl pent-3-enoates 失效
    制备C1-C4烷基戊-3-烯酸酯

    公开(公告)号:US4316047A

    公开(公告)日:1982-02-16

    申请号:US166569

    申请日:1980-07-07

    CPC分类号: C07C69/533

    摘要: A process for the preparation of C.sub.1 -C.sub.4 -alkyl pent-3-enoates, wherein butadiene, or a hydrocarbon mixture containing butadiene, either of which contains not more than 0.1% by weight of butynes, is reacted with carbon monoxide and an alkanol of 1 to 4 carbon atoms in the presence of a cobalt carbonyl catalyst and a tertiary nitrogen base, having a pK.sub.A of 3-11, at from 100.degree. to 140.degree. C. under a pressure of from 300 to 1,000 bar.

    摘要翻译: 一种制备C 1 -C 4烷基戊-3-烯酸酯的方法,其中丁二烯或含有丁二烯的烃混合物(其中含有不超过0.1重量%的丁炔)与一氧化碳和链烷醇反应 在羰基钴催化剂和叔氮碱的存在下,在300-1000巴的压力下,pKA为3-11,在100-140℃下存在1至4个碳原子。

    Obtaining C.sub.1 -C.sub.4 -alkyl pentenoates by distillation
    14.
    发明授权
    Obtaining C.sub.1 -C.sub.4 -alkyl pentenoates by distillation 失效
    通过蒸馏获得戊烯酸C1-C4烷基酯

    公开(公告)号:US4586987A

    公开(公告)日:1986-05-06

    申请号:US721810

    申请日:1985-04-10

    CPC分类号: C07C67/54

    摘要: C.sub.1 -C.sub.4 -alkyl pentenoates are obtained from reaction mixtures which contain this and which are obtained by reacting butadiene, or a butadiene-containing hydrocarbon mixture, with carbon monoxide and a C.sub.1 -C.sub.4 -alkanol, in the presence of a cobalt carbonyl catalyst and a tertiary nitrogen base at elevated temperatures and under superatmospheric pressure by a process in which(a) the liquid reaction mixture freed from excess carbon monoxide is treated with hydrogen at elevated temperatures and under from 5 to 80 bar,(b) hydrocarbons are distilled off from the resulting liquid reaction mixture,(c) the C.sub.1 -C.sub.4 -alkyl pentenoate, the alkanol and the nitrogen base are then distilled off under reduced pressure, and(d) the C.sub.1 -C.sub.4 -alkyl pentenoate is obtained by fractional distillation from the distillate containing this compound, the alkanol and the tertiary nitrogen base.

    摘要翻译: 由含有这一点的反应混合物获得戊烯酸C 1 -C 4烷基酯,其通过使丁二烯或含丁二烯的烃混合物与一氧化碳和C 1 -C 4烷醇在羰基钴催化剂存在下反应获得, 在高温和超大气压下,通过一种方法,(a)在高温和5至80巴下用氢处理脱除过量一氧化碳的液体反应混合物,(b)将烃蒸馏掉, 从所得液体反应混合物中,(c)戊烯酸C 1 -C 4烷基酯,然后在减压下蒸馏除去链烷醇和氮碱,并且(d)戊烯酸C1-C4烷基酯是通过从 含有该化合物的馏出物,链烷醇和叔氮碱。

    Preparation of formylvalerates
    16.
    发明授权
    Preparation of formylvalerates 失效
    甲酰戊酸的制备

    公开(公告)号:US4360692A

    公开(公告)日:1982-11-23

    申请号:US205569

    申请日:1980-11-10

    CPC分类号: C07C67/347 C07C67/38

    摘要: An improved process for the preparation of alkyl formylvalerates, wherein butadiene or a butadiene-containing hydrocarbon mixture is reacted, in a first stage, with carbon monoxide and alkanols in the presence of cobalt carbonyl complexes and, per mole of butadiene, from 0.5 to 2 moles of tertiary nitrogen bases having a pK.sub.a of from 3 to 11, at from 80.degree. to 150.degree. C. and from 300 to 2,000 bar, and, in a second stage, the resulting alkyl pentenoate is reacted with carbon monoxide and hydrogen in the presence of cobalt carbonyl complexes at from 100.degree. to 160.degree. C. and from 100 to 300 bar, the improvement being that tertiary nitrogen bases, excess alkanols and any unconverted hydrocarbons are distilled off from the reaction mixture obtained in the first stage, with the proviso that the reaction mixture is treated, before or during the distillation, with gases containing molecular oxygen, and the residual reaction mixture containing alkyl pentenoate and cobalt catalyst is used in the second stage.

    摘要翻译: 一种改进的制备烷基甲酰基戊酸酯的方法,其中丁二烯或含丁二烯的烃混合物在第一阶段中与一氧化碳和链烷醇在钴羰基络合物和每摩尔丁二烯的存在下反应,为0.5至2 具有pKa为3至11,80至150℃和300至2,000巴的叔氮碱的摩尔数,并且在第二阶段中,使得到的戊烯酸烷基酯与一氧化碳和氢气在 在100至160℃和100至300巴存在钴羰基络合物,其改进是从第一阶段获得的反应混合物中蒸馏掉叔氮碱,过量链烷醇和任何未转化的烃, 条件是反应混合物在蒸馏之前或期间用含有分子氧的气体进行处理,并且含有戊烯酸烷基酯和钴催化剂的残余反应混合物用于 第二阶段

    Isolation and regeneration of rhodium-containing catalysts from
distillation residues of hydroformylation reactions
    17.
    发明授权
    Isolation and regeneration of rhodium-containing catalysts from distillation residues of hydroformylation reactions 失效
    从加氢甲酰化反应的蒸馏残余物中分离和再生含铑催化剂

    公开(公告)号:US4113754A

    公开(公告)日:1978-09-12

    申请号:US780297

    申请日:1977-03-23

    摘要: The isolation and regeneration of catalysts of type I or IIclRh(CO)(PR.sub.3).sub.2 Ihrh(CO)(PR.sub.3).sub.3 II,where the R's are identical or different hydrocarbon radicals, to give the catalysts in a pure form, is effected by regenerating aqueous rhodium salt solutions, as obtained on treating distillation residues of hydroformylation mixtures with oxygen-containing mineral acids and peroxides, by a method wherein the said aqueous rhodium salt solutions are treated with a cation exchanger, the latter is then separated from the solution, the absorbed rhodium ions are desorbed with hydrochloric acid, the hexachlororhodate solutions, containing hydrochloric acid, are reacted, in the presence of a water-soluble organic solvent and a tertiary phosphine PR.sub.3, with carbon monoxide, or with compounds which eliminate carbon monoxide, at from 0.degree. to 150.degree. C and from 1 to 5 bars, and the resulting complexes I or, if the process is carried out under hydrogenating conditions, the resulting complexes II, are separated off.

    摘要翻译: 分离和再生I或II型ClRh(CO)(PR3)2I HRh(CO)(PR3)3II的催化剂,其中R是相同或不同的烃基,得到纯形式的催化剂,是通过 通过其中所述水合铑盐溶液用阳离子交换剂处理的方法,在用含氧无机酸和过氧化物处理加氢甲酰化混合物的蒸馏残余物时获得的再生铑水溶液溶液,然后将该铑盐溶液与溶液分离, 吸收的铑离子用盐酸解吸,含有盐酸的六氯乙酸溶液在水溶性有机溶剂和叔膦PR3存在下与一氧化碳或与一氧化碳消除的化合物反应, 0至150℃和1至5巴,所得的络合物I或如果该方法在氢化条件下进行,则得到的络合物II为sepa 评分。

    Continuous production of ethanol and plural stage distillation of the
same
    18.
    发明授权
    Continuous production of ethanol and plural stage distillation of the same 失效
    连续生产乙醇和多级蒸馏相同

    公开(公告)号:US4454358A

    公开(公告)日:1984-06-12

    申请号:US337683

    申请日:1982-01-07

    摘要: Ethanol is produced continuously via the carbonylation of methanol, by(a) carbonylating methanol, in a reactor R, in the presence of a carbonyl complex of a metal of group VIII of the periodic table and of a halogen compound,(b) separating, in a distillation column D1, the reactor discharge, into a top fraction comprising methyl acetate, methanol, dimethyl ether and an organohalogen compound, and into a bottom fraction comprising water, small quantities of acetic acid and the catalyst, if the latter is not in a fixed bed, the residence time being so adjusted that the greater part of the acetic acid reacts with the methanol present to give methyl acetate,(c) separating the top fraction from D1, in a distillation column D2, into a top fraction comprising small quantities of methyl acetate, methanol, dimethyl ether and the organo-halogen compound, and a bottom fraction comprising methyl acetate and methanol, and recycling the top fraction to reactor R,(d) distilling off, via the top of distillation column D3, the greater part of the water from the bottom fraction from D1and removing this water from circulation, and recycling to reactor R the bottom fraction consisting of small quantities of water, acetic acid and the catalyst,(e) using hydrogen to hydrogenate, in the hydrogenation reactor H, the bottom fraction from D2, in a conventional manner, to give a mixture of methanol and ethanol, and(f) separating the mixture into ethanol and methanol in a distillation column D4, and recycling the methanol to reactor R.

    摘要翻译: 通过(a)在反应器R中羰基化甲醇,在周期表第VIII族金属的羰基络合物和卤素化合物的存在下,连续生产乙醇,(b)分离, 在蒸馏塔D1中,反应器排出成为包含乙酸甲酯,甲醇,二甲醚和有机卤素化合物的顶级馏分,并进入包含水,少量乙酸和催化剂的底部馏分,如果后者不在 固定床,停留时间如此调节,使得大部分乙酸与存在的甲醇反应得到乙酸甲酯,(c)将蒸馏塔D2中的顶馏分与D1分离成包含小分子的顶馏分 数量的乙酸甲酯,甲醇,二甲醚和有机卤素化合物,以及包含乙酸甲酯和甲醇的底部馏分,并将顶部馏分再循环到反应器R中,(d)通过顶部o蒸馏 f蒸馏塔D3,来自D1的底部馏分的大部分水从循环中除去,并且将反应器R再循环到由少量水,乙酸和催化剂组成的底部馏分,(e)使用氢气 以常规方式在氢化反应器H中将来自D2的塔底馏分氢化,得到甲醇和乙醇的混合物,和(f)将混合物在蒸馏塔D4中分离成乙醇和甲醇,并将甲醇再循环至 反应器