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公开(公告)号：US5731456A
公开(公告)日：1998-03-24
申请号：US766248
申请日：1996-12-13
CPC分类号： C07C67/46 , Y02P20/582
摘要： This invention pertains to the preparation of vinyl acetate by contacting a mixture of hydrogen and ketene with a heterogeneous catalyst containing a transition metal to produce acetaldehyde, which is then reacted with ketene in the presence of an acid catalyst to produce vinyl acetate.
摘要翻译： 本发明涉及通过使氢和乙烯酮的混合物与含有过渡金属的多相催化剂接触以制备乙醛来制备乙酸乙烯酯，然后在酸催化剂的存在下与乙烯酮反应制备乙酸乙烯酯。
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22.发明授权
公开(公告)号：US5710328A
公开(公告)日：1998-01-20
申请号：US562860
申请日：1995-11-27
IPC分类号： B01J27/198 , C07C51/083 , C07C51/567 , C07C51/00
CPC分类号： B01J23/002 , B01J27/198 , C07C51/083 , C07C51/567 , B01J2523/00
摘要： Disclosed is a process for the preparation of .alpha.,.beta.-unsaturated carboxylic acids and anhydrides thereof which comprises contacting formaldehyde or a source of formaldehyde with a carboxylic anhydride in the presence of a catalyst comprising mixed oxides of vanadium, phosphorus and, optionally, a third component selected from titanium, aluminum or, preferably silicon.
摘要翻译： 公开了一种制备α，β-不饱和羧酸及其酸酐的方法，其包括使甲醛或甲醛源与羧酸酐在催化剂存在下接触，所述催化剂包含钒，磷和任选的第三 组分选自钛，铝或优选硅。
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公开(公告)号：US07582792B2
公开(公告)日：2009-09-01
申请号：US11424327
申请日：2006-06-15
摘要： Disclosed is a carbonylation process for the production of carboxylic acids, carboxylic acid esters and/or carboxylic acid anhydrides wherein a carbonylation feedstock compound selected from one or more organic oxygenates such as alcohols, ethers, and esters is contacted with carbon monoxide in the presence of a carbonylation catalyst and one or more onium compounds. The carbonylation process differs from known carbonylation processes in that a halide compound such as a hydrogen halide, typically hydrogen iodide, and/or alkyl halide, typically methyl iodide, extraneous or exogenous to the carbonylation process is not fed or supplied separately to the process.
摘要翻译： 公开了用于生产羧酸，羧酸酯和/或羧酸酐的羰基化方法，其中选自一种或多种有机含氧化合物如醇，醚和酯的羰基化原料化合物与一氧化碳在一起存在下接触 羰基化催化剂和一种或多种鎓化合物。 羰基化方法不同于已知的羰基化方法，因为卤代化合物，例如卤化氢，通常为碘化氢，和/或烷基卤化物，通常为甲基碘，对于羰基化方法是外来或外源的，不是单独进料或供应给该方法。
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公开(公告)号：US20070299280A1
公开(公告)日：2007-12-27
申请号：US11426326
申请日：2006-06-26
IPC分类号： C07C51/14
CPC分类号： C07C51/14 , C07C53/126 , C07C53/122 , C07C53/128
摘要： Disclosed is a hydrocarboxylation process for the production of carboxylic acid from olefins wherein an olefin, water, a Group VIII metal hydrocarboxylation catalyst, an onium salt compound are combined in a reaction zone and contacted with carbon monoxide under hydrocarboxylation conditions of pressure and temperature The process does not require or utilize the addition of a hydrogen halide or an alkyl halide exogenous or extraneous to the hydrocarboxylation process.
摘要翻译： 公开了一种用于从烯烃生产羧酸的加氢羧化方法，其中烯烃，水，VIII族金属加氢羧化催化剂，鎓盐化合物在压力和温度的加氢羧化条件下在反应区中合并并与一氧化碳接触。该方法 不需要或利用向加氢羧化过程中加入外源或外来的卤化氢或烷基卤。
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公开(公告)号：US20070293695A1
公开(公告)日：2007-12-20
申请号：US11424327
申请日：2006-06-15
摘要： Disclosed is a carbonylation process for the production of carboxylic acids, carboxylic acid esters and/or carboxylic acid anhydrides wherein a carbonylation feedstock compound selected from one or more organic oxygenates such as alcohols, ethers, and esters is contacted with carbon monoxide in the presence of a carbonylation catalyst and one or more onium compounds. The carbonylation process differs from known carbonylation processes in that a halide compound such as a hydrogen halide, typically hydrogen iodide, and/or alkyl halide, typically methyl iodide, extraneous or exogenous to the carbonylation process is not fed or supplied separately to the process.
摘要翻译： 公开了用于生产羧酸，羧酸酯和/或羧酸酐的羰基化方法，其中选自一种或多种有机含氧化合物如醇，醚和酯的羰基化原料化合物与一氧化碳在一起存在下接触 羰基化催化剂和一种或多种鎓化合物。 羰基化方法不同于已知的羰基化方法，因为卤代化合物，例如卤化氢，通常为碘化氢，和/或烷基卤化物，通常为甲基碘，对于羰基化方法是外来或外源的，不是单独进料或供应给该方法。
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公开(公告)号：US06265618B1
公开(公告)日：2001-07-24
申请号：US09615480
申请日：2000-07-13
IPC分类号： C07C4529
CPC分类号： C07C45/48 , B01J23/20 , C07C49/293
摘要： Disclosed is a process for the preparation of ketones by contacting one or more carboxylic acids with a niobium catalyst at elevated temperatures. The process includes the use of a modified base-exchanged niobium catalyst that is particularly useful for the production of cyclopropyl ketones such as cyclopropyl methyl ketone from cyclopropanecarboxylic acid and acetic acid.
摘要翻译： 公开了一种通过在升高的温度下使一种或多种羧酸与铌催化剂接触来制备酮的方法。 该方法包括使用改性的碱交换的铌催化剂，其特别可用于从环丙烷羧酸和乙酸生产环丙基甲酮如环丙基甲基酮。
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公开(公告)号：US5808148A
公开(公告)日：1998-09-15
申请号：US775935
申请日：1997-01-03
IPC分类号： B01J23/20 , C07B61/00 , C07C51/353 , C07C57/04 , C07C57/045 , C07C67/343 , C07C69/54 , C07C51/00
CPC分类号： C07C51/353 , C07C67/343
摘要： Disclosed is a process for the preparation of .alpha.,.beta.-unsaturated carboxylic acids and esters thereof which comprises contacting formaldehyde or a source of formaldehyde with a carboxylic acid, ester or anhydride in the presence of a catalyst comprising an oxide of niobium.
摘要翻译： 公开了一种制备α，β-不饱和羧酸及其酯的方法，其包括在包含铌氧化物的催化剂存在下使甲醛或甲醛源与羧酸，酯或酸酐接触。
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公开(公告)号：US20090247783A1
公开(公告)日：2009-10-01
申请号：US12060741
申请日：2008-04-01
CPC分类号： C07C67/36 , C07B41/00 , C07C51/12 , C07C51/56 , C07C67/37 , C07C53/08 , C07C53/12 , C07C69/14
摘要： Disclosed is an improved carbonylation process for the production of carboxylic acids, carboxylic acid esters, and/or carboxylic acid anhydrides wherein a carbonylation feedstock compound selected from one or more organic oxygenates such as alcohols, ethers, and esters is contacted with carbon monoxide in the presence of a carbonylation catalyst and one or more onium compounds. The carbonylation process differs from known carbonylation processes in that a halide compound, other than the onium salt, such as a hydrogen halide (typically, hydrogen iodide) and/or an alkyl halide (typically, methyl iodide), extraneous or exogenous to the carbonylation process is not fed or supplied to the process. The process can be improved by using a bidentate ligand comprising two functional groups selected from tertiary amines and tertiary phosphines, such as 2,2′-bipyridine and diphosphine derivatives.
摘要翻译： 公开了用于生产羧酸，羧酸酯和/或羧酸酐的改进的羰基化方法，其中选自一种或多种有机含氧化合物如醇，醚和酯的羰基化原料化合物与一氧化碳在 存在羰基化催化剂和一种或多种鎓化合物。 羰基化方法与已知的羰基化方法不同之处在于除了卤化物（通常为碘化氢）和/或烷基卤（通常为甲基碘）之外的卤化物，对于羰基化是外来或外源的 过程没有进给或提供给过程。 通过使用包含选自叔胺和叔膦的两种官能团的二齿配体，例如2,2'-联吡啶和二膦衍生物，可以改进该方法。
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29.发明授权
公开(公告)号：US5998657A
公开(公告)日：1999-12-07
申请号：US60468
申请日：1998-04-15
IPC分类号： C07C67/08 , C07B61/00 , C07C51/353 , C07C57/04 , C07C67/343 , C07C69/54 , C07C69/52 , C07B35/00
CPC分类号： C07C51/353 , C07C67/343
摘要： A process using a niobium catalyst includes the step of reacting an ester or carboxylic acid with oxygen and an alcohol in the presence a niobium catalyst to respectively produce an .alpha.,.beta.-unsaturated ester or carboxylic acid. Methanol may be used as the alcohol, and the ester or carboxylic acid may be passed over the niobium catalyst in a vapor stream containing oxygen and methanol. Alternatively, the process using a niobium catalyst may involve the step of reacting an ester and oxygen in the presence the niobium catalyst to produce an .alpha.,.beta.-unsaturated carboxylic acid. In this case the ester may be a methyl ester. In either case, niobium oxide may be used as the niobium catalyst with the niobium oxide being present on a support. The support may be an oxide selected from the group consisting of silicon oxide, aluminum oxide, titanium oxide and mixtures thereof. The catalyst may be formed by reacting niobium fluoride with the oxide serving as the support. The niobium catalyst may contain elemental niobium within the range of 1 wt % to 70 wt %, and more preferably within the range of 10 wt % to 30 wt %. The process may be operated at a temperature from 150 to 450.degree. C. and preferably from 250 to 350.degree. C. The process may be operated at a pressure from 0.1 to 15 atm. absolute and preferably from 0.5-5 atm. absolute. The flow rate of reactants may be from 10 to 10,000 L/kg.sub.(cat) /h, and preferably from 100 to 1,000 L/kg.sub.(cat) /h.
摘要翻译： 使用铌催化剂的方法包括在铌催化剂存在下使酯或羧酸与氧和醇反应以分别产生α，β-不饱和酯或羧酸的步骤。 可以使用甲醇作为醇，并且酯或羧酸可以在含有氧和甲醇的蒸气流中通过铌催化剂。 或者，使用铌催化剂的方法可以包括在存在铌催化剂的情况下使酯和氧反应以产生α，β-不饱和羧酸的步骤。 在这种情况下，酯可以是甲酯。 在任一情况下，可以使用铌氧化物作为铌催化剂，其中铌氧化物存在于载体上。 载体可以是选自氧化硅，氧化铝，氧化钛及其混合物的氧化物。 催化剂可以通过使氟化铌与作为载体的氧化物反应而形成。 铌催化剂可以含有1重量％〜70重量％的范围内的元素铌，更优选在10重量％〜30重量％的范围内。 该方法可以在150至450℃，优选250至350℃的温度下操作。该方法可以在0.1至15atm的压力下操作。 绝对的，优选为0.5-5atm。 绝对。 反应物的流速可以为10〜10000L / kg（cat）/ h，优选为100〜1000L / kg（cat）/ h。
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公开(公告)号：US06476239B1
公开(公告)日：2002-11-05
申请号：US10074829
申请日：2002-02-12
申请人： Bhaskar Krishna Arumugam , Steven Thomas Perri , Elaine Beatrice Mackenzie , Larry Wayne Blair , Joseph Robert Zoeller
发明人： Bhaskar Krishna Arumugam , Steven Thomas Perri , Elaine Beatrice Mackenzie , Larry Wayne Blair , Joseph Robert Zoeller
IPC分类号： C07D30762
CPC分类号： C07D307/62
摘要： The present invention is a process for the preparation of ascorbic acid using a simulated moving bed (SMB) reactor system to accomplish the simultaneous conversion of KLG or a derivative of KLG to ascorbic acid and the separation of reaction products. The SMB reactor contains a solid or mixture of solids effective for catalyzing the reaction of KLG or its derivative and for separating the reactions products by selective adsorption of at least one product. In a general embodiment, this process involves (1) feeding a solution of KLG or a derivative thereof in a first solvent and a desorbent which is miscible with the first solvent, to a simulated moving bed reactor; (2) reacting the KLG or the KLG derivative to form ascorbic acid; and (3) removing from the simulated moving bed reactor (i) a first liquid stream comprising a solution of ascorbic acid in the desorbent and the first solvent (ii) a second liquid stream comprising the first solvent and the desorbent.
摘要翻译： 本发明是使用模拟移动床（SMB）反应器系统制备抗坏血酸的方法，以实现KLG或KLG的衍生物同时转化为抗坏血酸和分离反应产物。 SMB反应器含有对催化KLG或其衍生物的反应有效的固体或固体混合物，并且通过选择性吸附至少一种产物来分离反应产物。 在一般实施方案中，该方法包括（1）将KLG或其衍生物的溶液送入模拟移动床反应器中的第一溶剂和可与第一溶剂混溶的解吸剂; （2）使KLG或KLG衍生物反应形成抗坏血酸; （3）从模拟移动床反应器（i）中除去包含解吸剂中的抗坏血酸溶液的第一液体流和第一溶剂（ii）包含第一溶剂和解吸剂的第二液体流。
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