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公开(公告)号：US09969672B2
公开(公告)日：2018-05-15
申请号：US15521750
申请日：2015-10-07
摘要： A process for the preparation of MMA via oxidative esterification in the presence of a catalyst comprising palladium, bismuth, and antimony.
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公开(公告)号：US09963419B2
公开(公告)日：2018-05-08
申请号：US15521762
申请日：2015-10-02
CPC分类号： C07C67/54 , B01D3/4205 , C02F1/008 , C02F1/04 , C02F2103/38 , C07C67/39 , C07C67/40 , C07C69/54
摘要： A process for removing water from an oxidative esterification reactor includes (a) conducting an oxidative esterification reaction in a reactor; (b) removing a crude product stream from the reactor; (c) passing a first portion of the crude product stream directly to a product recovery zone; (d) introducing a second portion of the crude product stream to a distillation column to generate a column overheads stream and a column bottoms stream; (e) passing at least a portion of the columns bottoms stream to the product recovery zone; and (f) recycling a recycle stream comprising at least a portion of the overheads stream to the reactor; wherein the recycle stream contains less than 1 weight percent (wt %) water based on the total weight of the recycle stream, wherein the weight ratio of the first portion to the second portion is at least 1:10, and wherein the amount of the recycle stream recycled to the reactor is such that the reactor contains less than or equal to 2.5 wt % water, based on the weight of the reactor contents.
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公开(公告)号：US09770708B2
公开(公告)日：2017-09-26
申请号：US14905988
申请日：2014-07-29
IPC分类号： B01J21/04 , B01J21/08 , B01J21/12 , B01J23/06 , B01J23/10 , B01J27/14 , B01J27/186 , B01J37/02 , B01J37/16 , B01J23/644 , B01J23/648 , B01J23/652 , B01J27/045 , C07C67/39
CPC分类号： B01J27/186 , B01J23/6447 , B01J23/6482 , B01J23/6484 , B01J23/6525 , B01J27/045 , B01J37/0242 , B01J37/0244 , B01J37/16 , C07C67/39 , C07C69/54
摘要： A catalyst comprising palladium, bismuth, and at least one third element X selected from the group consisting of P, S, Sc, V, Ga, Se, Y, Nb, Mo, La, Ce, and Nd, wherein the catalyst further comprises a support.
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4.发明申请公开(公告)号：US20160207870A1
公开(公告)日：2016-07-21
申请号：US14907452
申请日：2014-07-29
IPC分类号： C07C67/39 , B01J23/644 , B01J23/89 , C07C67/62 , B01J23/00
CPC分类号： C07C67/39 , B01J23/002 , B01J23/624 , B01J23/6447 , B01J23/8973 , B01J37/0201 , B01J37/08 , B01J37/16 , B01J2523/00 , C07C67/62 , C07C69/54 , B01J2523/31 , B01J2523/54 , B01J2523/824 , B01J2523/842 , B01J2523/27 , B01J2523/42
摘要： A process for producing methyl methacrylate, the process comprising contacting reactants comprising methacrolein, methanol and an oxygen-containing gas, under reaction conditions in the presence of a solid catalyst comprising palladium, bismuth and at least one third element X selected from the group consisting of Fe, Zn, Ge, and Pb, wherein the solid catalyst further comprises a support selected from at least one member of the group consisting of silica and alumina.
摘要翻译： 一种生产甲基丙烯酸甲酯的方法，该方法包括在包含甲基丙烯醛，甲醇和含氧气体的反应物的反应条件下，在包含钯，铋和至少一种选自下组的第三元素X的固体催化剂存在下， Fe，Zn，Ge和Pb，其中固体催化剂还包含选自二氧化硅和氧化铝中的至少一种成员的载体。
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公开(公告)号：US20160159728A1
公开(公告)日：2016-06-09
申请号：US14906310
申请日：2014-07-29
IPC分类号： C07C67/39 , B01J23/648 , B01J23/652 , B01J27/186 , C07C67/62 , B01J23/644
CPC分类号： C07C67/39 , B01J21/04 , B01J23/002 , B01J23/6447 , B01J23/6484 , B01J23/6525 , B01J27/186 , B01J37/031 , B01J37/038 , B01J37/16 , B01J2523/00 , C07C67/62 , C07C69/54 , B01J2523/31 , B01J2523/36 , B01J2523/54 , B01J2523/824 , B01J2523/32 , B01J2523/56 , B01J2523/68 , B01J2523/3712 , B01J2523/3725 , B01J2523/51 , B01J2523/35
摘要： A process for producing methyl methacrylate, the process comprising contacting reactants comprising methacrolein, methanol and an oxygen-containing gas, under reaction conditions in the presence of a solid catalyst comprising palladium, bismuth and at least one third element X, where X is selected from the group consisting of P, S, Sc, V, Ga, Se, Y, Nb, Mo, La, Ce, and Nd, wherein the solid catalyst further comprises a support selected from at least one member of the group consisting of silica, alumina, calcium carbonate, active carbon, zinc oxide, titanium oxide and magnesium oxide.
摘要翻译： 一种生产甲基丙烯酸甲酯的方法，该方法包括在包含钯，铋和至少一种第三元素X的固体催化剂存在下，在反应条件下使包含甲基丙烯醛，甲醇和含氧气体的反应物接触，其中X选自 由P，S，Sc，V，Ga，Se，Y，Nb，Mo，La，Ce和Nd组成的组，其中固体催化剂还包含选自二氧化硅， 氧化铝，碳酸钙，活性炭，氧化锌，氧化钛和氧化镁。
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6.发明申请公开(公告)号：US20160151770A1
公开(公告)日：2016-06-02
申请号：US14905988
申请日：2014-07-29
IPC分类号： B01J27/186 , B01J23/652 , B01J23/644
CPC分类号： B01J27/186 , B01J23/6447 , B01J23/6482 , B01J23/6484 , B01J23/6525 , B01J27/045 , B01J37/0242 , B01J37/0244 , B01J37/16 , C07C67/39 , C07C69/54
摘要： A catalyst comprising palladium, bismuth, and at least one third element X selected from the group consisting of P, S, Sc, V, Ga, Se, Y, Nb, Mo, La, Ce, and Nd, wherein the catalyst further comprises a support.
摘要翻译： 1.一种催化剂，其包含钯，铋和选自P，S，Sc，V，Ga，Se，Y，Nb，Mo，La，Ce和Nd中的至少一种第三元素X，其中所述催化剂还包含 一个支持。
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公开(公告)号：US09765007B2
公开(公告)日：2017-09-19
申请号：US14917114
申请日：2014-09-18
IPC分类号： C07C67/00 , C07C45/83 , C07C45/65 , C07C45/80 , C07C45/82 , C07C45/50 , C07C45/61 , C07C67/44
CPC分类号： C07C45/83 , C07C45/505 , C07C45/61 , C07C45/65 , C07C45/80 , C07C45/82 , C07C67/44 , C07C47/22
摘要： A process for preparing dry methacrolein, and a process for producing methyl methacrylate are disclosed.
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8.发明申请公开(公告)号：US20170247312A1
公开(公告)日：2017-08-31
申请号：US15521785
申请日：2015-10-02
摘要： A process for continuously removing water in situ from an oxidative esterification reaction includes (a) conducting a first oxidative esterification reaction in a first reactor or reaction zone, wherein the total number of reactors or reaction zones is n and n is at least 2; (b) removing a crude product stream from the first reactor or reaction zone; (c) introducing the crude product stream to a distillation column to generate a column overheads stream and a column bottoms stream; (d) passing at least a portion of the columns bottoms stream to the product recovery zone; and (e) passing at least a portion of the column overheads stream to a subsequent reactor or reaction zone; and (f) repeating steps (a)-(e) for each subsequent reactor or reaction zone such that the number of distillation columns less than n, and wherein the at least a portion of the column overheads stream contains less than 1 weight percent (wt %) water based on the total weight of the at least a portion of the column overheads stream.
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公开(公告)号：US09676699B2
公开(公告)日：2017-06-13
申请号：US14906310
申请日：2014-07-29
IPC分类号： C07C67/39 , B01J37/03 , B01J37/16 , B01J21/04 , B01J23/00 , B01J23/644 , B01J23/652 , B01J23/648 , B01J27/186 , C07C67/62
CPC分类号： C07C67/39 , B01J21/04 , B01J23/002 , B01J23/6447 , B01J23/6484 , B01J23/6525 , B01J27/186 , B01J37/031 , B01J37/038 , B01J37/16 , B01J2523/00 , C07C67/62 , C07C69/54 , B01J2523/31 , B01J2523/36 , B01J2523/54 , B01J2523/824 , B01J2523/32 , B01J2523/56 , B01J2523/68 , B01J2523/3712 , B01J2523/3725 , B01J2523/51 , B01J2523/35
摘要： A process for producing methyl methacrylate, the process comprising contacting reactants comprising methacrolein, methanol and an oxygen-containing gas, under reaction conditions in the presence of a solid catalyst comprising palladium, bismuth and at least one third element X, where X is selected from the group consisting of P, S, Sc, V, Ga, Se, Y, Nb, Mo, La, Ce, and Nd, wherein the solid catalyst further comprises a support selected from at least one member of the group consisting of silica, alumina, calcium carbonate, active carbon, zinc oxide, titanium oxide and magnesium oxide.
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公开(公告)号：US20160229779A1
公开(公告)日：2016-08-11
申请号：US14917114
申请日：2014-09-18
CPC分类号： C07C45/83 , C07C45/505 , C07C45/61 , C07C45/65 , C07C45/80 , C07C45/82 , C07C67/44 , C07C47/22
摘要： A process for preparing dry methacrolein, and a process for producing methyl methacrylate are disclosed.
摘要翻译： 公开了一种制备干甲基丙烯醛的方法和一种生产甲基丙烯酸甲酯的方法。
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