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公开(公告)号：US4992582A
公开(公告)日：1991-02-12
申请号：US287895
申请日：1988-12-20
CPC分类号： C07C51/44
摘要： In the continuous preparation of isobutyric acid by the Koch synthesis from propylene, carbon monoxide, and water or an alcohol in hydrogen fluoride under pressure, the reaction mixture, after reaction, is depressurized, a principal amount of the gaseous components to be removed is separated, the remaining liquid phase is introduced into the middle to upper region of a distillation column in which base temperature is kept above the boiling point of isobutyric acid and the head temperature is kept near the boiling point of hydrogen fluoride, and isobutyric acid is removed as a liquid of high purity from a plate below the entrance of the feed.
摘要翻译： 在通过由丙烯，一氧化碳和水或醇或氟化氢中的醇在压力下连续制备异丁酸时，反应后的反应混合物被减压，待除去的气态组分的主要量被分离 ，将剩余的液相引入蒸馏塔的中部至上部区域，其中基础温度保持在异丁酸的沸点以上，并且头部温度保持接近氟化氢的沸点，除去异丁酸作为 从饲料入口下方的板中获得高纯度的液体。
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公开(公告)号：US4504675A
公开(公告)日：1985-03-12
申请号：US436467
申请日：1982-10-25
摘要： What is disclosed is a process for the continuous production of isobutyric acid or an alkyl ester thereof by the Koch synthesis, which process comprises reacting propylene, carbon monoxide, and water or an alkanol in the presence of hydrogen fluoride in at least one reaction space containing a liquid phase and a gas phase under high pressure, releasing said pressure at least partially, whereby a gas containing organic compounds from said synthesis evolves from said liquid phase, adding oxygen to said evolved gas and at least partially combusting the organic compounds contained therein, then contacting the evolved gas containing the at least partially combusted organic compounds with at least a portion of the water or alkanol to be reacted with said propylene and carbon monoxide, whereby at least a portion of said combusted organic compounds are absorbed by said water or alkanol, returning said water or alkanol containing the absorbed combusted organic compounds to said reaction space, and discharging any unabsorbed gas from the reaction system.
摘要翻译： 所公开的是通过Koch合成连续生产异丁酸或其烷基酯的方法，该方法包括使丙烯，一氧化碳和水或链烷醇在氟化氢存在下在至少一个含有 在高压下的液相和气相，至少部分地释放所述压力，由此来自所述合成的含有有机化合物的气体从所述液相中放出，向所述放出的气体中加入氧气并且至少部分地燃烧其中所含的有机化合物， 然后将含有至少部分燃烧的有机化合物的进化气体与要与所述丙烯和一氧化碳反应的水或链烷醇的至少一部分接触，由此所述燃烧的有机化合物的至少一部分被所述水或链烷醇吸收 将含有所吸收的燃烧的有机化合物的所述水或链烷醇返回到所述反应空间， 并从反应系统排出任何未吸收的气体。
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公开(公告)号：US4452999A
公开(公告)日：1984-06-05
申请号：US380609
申请日：1982-05-21
摘要： What is disclosed is a continuous one-step method for the preparation of isobutyric acid or a lower alkyl ester thereof by the Koch synthesis, which method comprises reacting propylene, carbon monoxide, and water or a lower alcohol, in the gaseous and liquid phases, in the presence of hydrogen fluoride as a Koch catalyst, at a temperature between 80.degree. C. and 160.degree. C., at a dwell time of the liquid phase of less than 20 minutes, and with a high degree of backmixing, while maintaining the content of propylene in the reaction mixture at less than one percent by weight of the liquid phase, wherein all or part of the propylene, carbon monoxide, and water or lower alcohol can be replaced by binary addition compounds formed pairwise between these materials. In the alternative, isopropylformiate can be continuously rearranged in the presence of hydrogen fluoride to produce isobutyric acid.
摘要翻译： 所公开的是通过Koch合成制备异丁酸或其低级烷基酯的连续一步法，该方法包括在气相和液相中使丙烯，一氧化碳和水或低级醇反应， 在作为Koch催化剂的氟化氢的存在下，在80℃至160℃的温度下，在液相的停留时间小于20分钟，并具有高度的回混，同时保持 反应混合物中丙烯的含量小于液相的1重量％，其中全部或部分丙烯，一氧化碳和水或低级醇可以由在这些材料之间成对形成的二元加成化合物代替。 在替代方案中，异丙基甲酸酯可以在氟化氢的存在下连续重排以产生异丁酸。
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公开(公告)号：US5218145A
公开(公告)日：1993-06-08
申请号：US260032
申请日：1988-10-20
IPC分类号： C07C69/24 , B01J27/12 , C07B61/00 , C07C51/00 , C07C51/14 , C07C53/124 , C07C67/00 , C07C67/38
摘要： In the manufacture of isobutyric acid or its precursors or esters by the Koch synthesis from propylene, carbon monoxide, and, optionally, water or an alcohol in liquid hydrogen fluoride, the reaction mixture is maintained at a constant reaction temperature in a heat exchanger using an addition product of at least two of the aforementioned materials, preferably isopropanol, as a coolant.
摘要翻译： 在通过由丙烯，一氧化碳和任选的水或醇在液体氟化氢中的Koch合成来制造异丁酸或其前体或酯时，将反应混合物在热交换器中保持恒定的反应温度，使用 作为冷却剂的至少两种前述材料，优选异丙醇的加成产物。
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公开(公告)号：US4791227A
公开(公告)日：1988-12-13
申请号：US422254
申请日：1982-09-23
IPC分类号： C22C21/00 , B01J3/00 , B01J19/02 , C07C51/14 , C07C67/38 , C07C51/44 , C07C51/48 , C07C67/54 , C07C67/58
CPC分类号： C07C51/14 , B01J19/02 , B01J3/002 , B01J2219/0277 , Y10S203/06 , Y10S203/17
摘要： What is disclosed is the use of metallic vessels having particularly high corrosion resistance which are made of(a) aluminum or alloys containing more than 95% aluminum, or of(b) nickel-chromium-iron alloys containing from 30 to 50% of nickel, from 20 to 30% of chromium, and from 18 to 50% of iron, by weight, in reacting or working up mixtures containing substantial amounts of hydrogen fluoride in addition to organic carboxylic acids and/or carbon monoxide and/or water.
摘要翻译： 公开的是使用具有特别高耐腐蚀性的金属容器，其由（a）铝或含有超过95％的铝的合金或（b）含有30至50％的镍的镍 - 铬 - 铁合金制成 ，20至30％的铬和18至50％的铁，除了有机羧酸和/或一氧化碳和/或水之外，还含有相当量的氟化氢的混合物的反应或加工。
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公开(公告)号：US4647696A
公开(公告)日：1987-03-03
申请号：US474799
申请日：1983-03-14
IPC分类号： C07C51/14 , C07C67/38 , C07B53/00 , C07C53/124
摘要： What is disclosed is a continuous one-step method for the preparation of isobutyric acid or a lower alkyl ester thereof by the Koch synthesis, which method comprises reacting propylene, carbon monoxide, and water or a lower alcohol, in the gaseous and liquid phases, in the presence of hydrogen fluoride as a Koch catalyst, at a temperature between 80.degree. C. and 160.degree. C., at a dwell time of the liquid phase of less than 20 minutes, and with a high degree of backmixing, while maintaining the content of propylene in the reaction mixture at less than one percent by weight of the liquid phase, wherein all or part of the propylene, carbon monoxide, and water or lower alcohol can be replaced by binary addition compounds formed pairwise between these materials. In the alternative, isopropylformiate can be continuously rearranged in the presence of hydrogen fluoride to produce isobutyric acid.
摘要翻译： 所公开的是通过Koch合成制备异丁酸或其低级烷基酯的连续一步法，该方法包括在气相和液相中使丙烯，一氧化碳和水或低级醇反应， 在作为Koch催化剂的氟化氢的存在下，在80℃至160℃的温度下，在液相的停留时间小于20分钟，并具有高度的回混，同时保持 反应混合物中丙烯的含量小于液相的1重量％，其中全部或部分丙烯，一氧化碳和水或低级醇可以由这些材料成对形成的二元加成化合物代替。 在替代方案中，异丙基甲酸酯可以在氟化氢的存在下连续重排以产生异丁酸。
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7.发明授权Process for producing methacrylic acid and methacrolein by oxidation of isobutane with molybdenum heteropoly acid catalyst 失效通过用钼杂多酸催化剂氧化异丁烷生产甲基丙烯酸和甲基丙烯醛的方法
公开(公告)号：US5380932A
公开(公告)日：1995-01-10
申请号：US156822
申请日：1993-11-24
IPC分类号： B01J27/199 , C07B61/00 , C07C27/14 , C07C45/33 , C07C47/22 , C07C51/215 , C07C57/05 , C07C51/25 , C07C57/04
CPC分类号： C07C45/33 , C07C51/215
摘要： The present invention relates to a process for the production of methacrylic acid and methacrolein by means of gas phase oxidation of isobutane in the gaseous phase at 250.degree. to 450.degree. C. on molybdenum heteropoly acid catalysts that are made up of CU.sub.a H.sub.b P.sub.c Mo.sub.d V.sub.e O.sub.f heteropoly acid compounds (I), where a=0.1 to 1, b=0 to 7.8, c=0.8 to 1.2, d=9 to 12, e=0.5 to 3, and f depends on the molar numbers a to e, and/or the heteropoly acid H.sub.8 PMo.sub.10 VO.sub.39 (II) or its anhydride PMo.sub.10 VO.sub.35 (III).
摘要翻译： 本发明涉及一种通过在250℃至450℃的气相中异丁烷的气相氧化制备甲基丙烯酸和甲基丙烯醛的方法，所述钼杂多酸催化剂由CUaHbPcModVeOf杂多酸化合物（ I），其中a = 0.1至1，b = 0至7.8，c = 0.8至1.2，d = 9至12，e = 0.5至3，f取决于a至e的摩尔数和/或杂多 酸性H8PMo10VO39（II）或其酸酐PMo10VO35（III）。
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