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1.发明授权Aliphatic and cyclic perfluoro-alkyl ethers and process for the preparation thereof 失效脂肪族和环状全氟烷基醚及其制备方法
公开(公告)号：US3962348A
公开(公告)日：1976-06-08
申请号：US440567
申请日：1974-02-07
IPC分类号： C10M105/54 , C07C43/12 , C07D307/12 , C07D307/18 , C07D307/20 , C07D309/04 , C07D309/06 , C07D309/10 , C09K3/00 , C09K5/02 , C09K5/08 , C09K5/20 , C10M169/00 , C10N40/00 , C10N40/08 , C10N40/16 , C25B3/08 , F02B47/06
CPC分类号： C09K5/08 , C07C43/126 , C07D307/12 , C07D309/06 , C07D309/10 , C09K5/20 , C10M3/00 , C25B3/08 , C10M2211/042 , C10M2211/06 , C10M2213/00 , C10M2213/04 , C10M2213/06 , C10N2230/32 , C10N2240/08 , C10N2240/201 , C10N2240/202
摘要： Mono- or polyhydric alcohols of the alkan-, tetrahydrofuran- or tetrahydropyran series or di- or tri-alkyleneglycols are dissolved in an aprotic polar solvent and reacted with C.sub.3 F.sub.6 in the presence of trialkylamines, or with tetrafluoroethylene to give the corresponding tetrafluoroethyl- or hexafluoropropyl ethers. The solution of the fluoroethers in anhydrous hydrofluoric acid is electrolyzed. Hydrogen-free perfluoroethers are obtained.
摘要翻译： 将烷基，四氢呋喃或四氢吡喃系列的单醇或多元醇或二 - 或三亚烷基二醇溶于非质子极性溶剂中，并在三烷基胺或四氟乙烯的存在下与C3F6反应，得到相应的四氟乙基或六氟丙基 醚类。 将氟代醚在无水氢氟酸中的溶液电解。 得到无氢全氟醚。
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2.发明授权Process for reactivating silver catalysts used in the manufacture of ethylene oxide by direct oxidation 失效用于通过直接氧化制备环氧乙烷的银催化剂再活化的方法
公开(公告)号：US4051068A
公开(公告)日：1977-09-27
申请号：US680778
申请日：1976-04-27
IPC分类号： B01J23/66 , B01J23/96 , B01J38/48 , B01J38/52 , C07B61/00 , C07D301/10 , C07D303/04
CPC分类号： B01J38/485 , B01J23/96 , C07D301/10 , Y02P20/584
摘要： The efficiency of silver carrier catalysts having reduced activity for the manufacture of ethylene oxide by reacting ethylene with oxygen or air is improved by impregnating the used catalyst with a solution containing cesium and/or rubidium compounds, an aliphatic alcohol and at most 10% by weight of water. After impregnation the alcohol and optionally the water are evaporated. The cesium and/or rubidium content of the impregnating solution and the number of impregnations are adjusted to obtain on the carrier a cesium and/or rubidium concentration of from 1 to 1,000 ppm.
摘要翻译： 通过使乙烯与氧气或空气反应制备环氧乙烷活性降低的银载体催化剂的效率通过用含有铯和/或铷化合物，脂族醇和至多10重量％的溶液浸渍所使用的催化剂来改进 的水。 浸渍后，酒精和任选的水蒸发。 调节浸渍溶液中的铯和/或铷含量和浸渍次数以在载体上获得1至1,000ppm的铯和/或铷浓度。
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公开(公告)号：US4349417A
公开(公告)日：1982-09-14
申请号：US223590
申请日：1981-01-09
IPC分类号： C07C27/00 , C07C29/10 , C07C29/132 , C07C29/80 , C07C29/88 , C07C31/20 , C07C67/00 , B01D3/34
CPC分类号： C07C29/106 , C07C29/80 , C07C29/88
摘要： Ethylene oxide and water are reacted in a reactor and the reaction product is subjected to distillation in a plurality of distillation columns, in the first columns water and components having a boiling point below that of monoethylene glycol and higher ethylene glycols, if any, being distilled off. To obtain extremely pure monoethylene glycol alkali metal compounds are added at a point between the reactor and the monoethylene glycol distillation column in an amount to adjust the pH of the product entering the latter column to a value of from 7 to 10. The monoethylene glycol obtained in this manner is especially pure and has very low UV absorption values. It is, therefore, especially suitable for the manufacture of polyester fibers.
摘要翻译： 环氧乙烷和水在反应器中反应，反应产物在多个蒸馏塔中进行蒸馏，在第一塔中，沸点低于单乙二醇和高级乙二醇（如果有的话）蒸馏的水和组分 关闭 为了获得非常纯的单乙二醇，在反应器和单乙二醇蒸馏塔之间的一点加入碱金属化合物，其量为使进入后一塔的产物的pH值调节至7-10。获得的单乙二醇 以这种方式是特别纯净且具有非常低的UV吸收值。 因此，特别适用于制造聚酯纤维。
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公开(公告)号：US4123385A
公开(公告)日：1978-10-31
申请号：US823032
申请日：1977-08-09
IPC分类号： B01J23/66 , B01J23/96 , B01J38/48 , B01J38/50 , C07B61/00 , C07D301/10 , B01J23/50 , C07D303/04
CPC分类号： C07D301/10 , B01J23/66 , B01J23/96 , B01J38/485 , Y02P20/584
摘要： The activity of supported silver catalysts used up in the direct oxidation of ethylene with molecular oxygen or air is improved by impregnating the catalyst arranged in a fixed bed with a solution of a caesium and/or rubidium compound in an inert organic solvent, optionally together with up to 40% by weight of water, calculated on the total liquid, as dissolving intermediary, so as to produce a concentration gradient of from 0.3 to 20 parts of caesium and/or rubidium per 1 million parts of catalyst and per meter of fixed bed, counter to the direction of flow of the gas to be reacted. In this manner the activity of the catalyst is considerably improved which results in an increased selectivity of the oxidation of ethylene to ethylene oxide.
摘要翻译： 用分子氧或空气直接氧化乙烯所用的负载型银催化剂的活性通过将布置在固定床中的催化剂与铯和/或铷化合物的溶液浸渍在惰性有机溶剂中，任选地与 最高达40重量％的水，以总液体计算，作为溶解中间体，以便每100万份催化剂和每米固定床产生0.3至20份铯和/或铷的浓度梯度 ，与要反应的气体的流动方向相反。 以这种方式，催化剂的活性显着改善，这导致乙烯氧化成环氧乙烷的选择性提高。
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公开(公告)号：US4335014A
公开(公告)日：1982-06-15
申请号：US188237
申请日：1980-09-17
IPC分类号： B01J23/50 , B01J23/66 , B01J23/68 , B01J23/96 , B01J38/48 , B01J38/66 , C07B61/00 , C07D301/10 , C07D303/04 , B01J23/48
CPC分类号： B01J23/50 , B01J23/96 , B01J38/485 , C07D301/10 , Y02P20/584
摘要： Supported silver catalysts, which should have as high an activity as possible, are employed for the manufacture of ethylene oxide by oxidizing ethylene by means of oxygen or air. A process is described for improving the activity of supported silver catalysts which have already been used, in which the used catalyst is first washed with an inert liquid containing ammonia and/or aliphatic amines and 1 to 1,000 parts, per 1 million parts of catalyst, of cesium, rubidium or a mixture thereof is then deposited on the washed catalyst. The deposition is generally effected with the aid of an impregnating solution containing the cesium and/or rubidium compounds in a suitable quantity. This process makes it possible to improve considerably the activity of supported silver catalysts which have already been in use for the oxidation of ethylene by means of oxygen or air.
摘要翻译： 应该具有尽可能高的活性的负载型银催化剂用于通过氧气或空气氧化乙烯来制造环氧乙烷。 描述了一种用于改善已经使用的负载型银催化剂的活性的方法，其中首先用含有氨和/或脂族胺的惰性液体和每1,000万份催化剂1至1,000份洗涤所用的催化剂， 然后将铯，铷或其混合物沉积在洗涤过的催化剂上。 沉积通常借助于含有适量的铯和/或铷化合物的浸渍溶液来实现。 该方法使得可以显着改善已经用于通过氧气或空气氧化乙烯的负载型银催化剂的活性。
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公开(公告)号：US4186106A
公开(公告)日：1980-01-29
申请号：US939329
申请日：1978-09-05
IPC分类号： B01J23/96 , B01J38/48 , C07B61/00 , C07D301/10 , C07D303/04 , B01J23/50
CPC分类号： C07D301/10 , B01J23/96 , B01J38/485 , Y02P20/584
摘要： The activity of supported silver catalysts, which have been used for the direct oxidation of ethylene to ethylene oxide with molecular oxygen or air and to which from 1 to 1,000 parts, per 1 million parts of catalyst, of cesium and/or rubidium have been applied, is improved by washing the catalyst with an inert liquid prior to the application of cesium and/or rubidium.
摘要翻译： 已经使用已经用于用分子氧或空气直接氧化环氧乙烷并且每100万份催化剂铯和/或铷从1到1,000份的载体的银催化剂的活性 通过在施加铯和/或铷之前用惰性液体洗涤催化剂来改进。
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公开(公告)号：US4177169A
公开(公告)日：1979-12-04
申请号：US845563
申请日：1977-10-26
IPC分类号： B01J23/66 , B01J23/96 , B01J31/40 , B01J38/48 , C07B61/00 , C07D301/10 , C07D303/04 , B01J23/50
CPC分类号： B01J38/485 , B01J23/66 , B01J23/96 , C07D301/10 , Y02P20/52 , Y02P20/584
摘要： The activity of supported silver catalysts for the direct oxidation of ethylene to ethylene oxide with molecular oxygen or air is improved by applying to the catalyst from 1 to 1,000 ppm, preferably 20 to 500 ppm, of cesium and/or rubidium in two or more than two steps and using the catalyst after each impregnation step again for the production of ethylene oxide by direct oxidation of ethylene with molecular oxygen or air.
摘要翻译： 用分子氧或空气将乙烯直接氧化成环氧乙烷的负载型银催化剂的活性通过在两种或多种催化剂中施用1至1,000ppm，优选20至500ppm的铯和/或铷的催化剂来改善 两个步骤，并且在每次浸渍步骤之后再次使用催化剂，以通过用分子氧或空气直接氧化乙烯来生产环氧乙烷。
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公开(公告)号：US4478948A
公开(公告)日：1984-10-23
申请号：US520142
申请日：1983-08-04
IPC分类号： B01J23/66 , B01J23/96 , B01J38/48 , C07B61/00 , C07D301/10
CPC分类号： C07D301/10 , B01J23/66 , B01J23/96 , B01J38/485 , Y02P20/584
摘要： A method for improving the activity of a used supported silver catalyst, used for the manufacture of ethylene oxide by reaction of ethylene with oxygen or air, which method consists essentially of:(a) impregnating said used catalyst at a temperature from 80.degree. C. to 150.degree. C. and for 0.75 hour to 10 hours with an impregnating solution containing water, a water-miscible organic solvent selected from the group consisting of methanol, ethanol, propanol, and isopropanol, at least one compound of cesium, rubidium, or of cesium and rubidium in an amount providing from 50 mg to 1000 mg per kilogram of solution, said solution containing from 5 to 50 percent by weight of water;(b) separating the impregnated catalyst from excess impregnating solution; and(c) drying the impregnated catalyst.
摘要翻译： 一种用于通过乙烯与氧气或空气反应制备环氧乙烷的用过的负载型银催化剂的活性的方法，该方法主要包括：（a）在80℃的温度下浸渍所述使用的催化剂。 使用含有水的浸渍溶液，选自甲醇，乙醇，丙醇和异丙醇的水混溶性有机溶剂，至少一种铯，铷或铯的化合物，进行0.75小时至10小时 的铯和铷，其量为每千克溶液50mg至1000mg，所述溶液含有5至50重量％的水; （b）将浸渍的催化剂与过量的浸渍溶液分离; 和（c）干燥浸渍的催化剂。
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公开(公告)号：US4471071A
公开(公告)日：1984-09-11
申请号：US500262
申请日：1983-06-02
IPC分类号： B01J23/54 , B01J23/66 , C07D301/10 , B01J23/04 , B01J23/50
CPC分类号： C07D301/10 , B01J23/66 , Y02P20/52
摘要： A method for making a silver catalyst by applying a promoter and a complex formed between a silver salt and a mixture of a tert.-alkyl amine and a sec.-alkyl amine to a heat resistant porous support and then thermally decomposing said complex to metallic silver.
摘要翻译： 通过将助催化剂和在银盐和叔烷基胺和仲烷基胺的混合物之间形成的络合物施加到耐热多孔载体上，然后将所述络合物热分解成金属，制备银催化剂的方法 银。
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10.发明授权Silver catalysts, a process for their preparation, and their use in preparing ethylene oxide 失效银催化剂，其制备方法及其在制备环氧乙烷中的用途
公开(公告)号：US4458032A
公开(公告)日：1984-07-03
申请号：US508475
申请日：1983-06-27
IPC分类号： B01J23/58 , B01J23/66 , B01J37/02 , C07D301/10 , B01J23/50
CPC分类号： C07D301/10 , B01J23/66 , B01J37/0205 , Y02P20/52
摘要： Silver catalysts, useful for the oxidation of ethylene to ethylene oxide, contain 3-20 percent by weight of silver and 0.003-0.05 percent by weight of potassium, rubidium, cesium, or a mixture thereof as a promoter present on a heat-resistant porous support to which they have been applied by several impregnating steps.
摘要翻译： 可用于将乙烯氧化成环氧乙烷的银催化剂含有3-20重量％的银和0.003-0.05重量％的钾，铷，铯或其混合物作为存在于耐热多孔 它们通过几个浸渍步骤被应用于其上。
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