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公开(公告)号：US10968150B2
公开(公告)日：2021-04-06
申请号：US16083609
申请日：2017-03-27
申请人： ZEON CORPORATION
发明人： Yoshihide Yachi
摘要： Provided is a method for producing 1,3-butadiene that enables 1,3-butadiene to be obtained in a high yield while preventing abnormal reaction of a fraction containing vinylacetylene in high concentration. The method for producing 1,3-butadiene is a method for producing 1,3-butadiene from a fraction produced in separation and recovery of 1,3-butadiene from a C4 hydrocarbon mixture that includes: adding a diluent to a high VA fraction containing vinylacetylene to produce a diluted fraction; and subjecting the diluted fraction to hydrogenation treatment to produce 1,3-butadiene. Substantially only a low VA fraction is used as the diluent. The low VA fraction is a fraction that is produced in separation and recovery of 1,3-butadiene from the C4 hydrocarbon mixture and has a lower vinylacetylene concentration than the high VA fraction.
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公开(公告)号：US10695748B2
公开(公告)日：2020-06-30
申请号：US15824310
申请日：2017-11-28
发明人： Malika Boualleg , Priscilla Avenier
IPC分类号： B01J21/04 , B01J23/44 , B01J35/10 , C07C7/163 , C07C7/167 , B01J35/00 , C07C5/05 , B01J35/08 , B01J37/02 , C10G70/02 , B01J21/08 , B01J21/12 , B01J37/08 , B01J37/10 , B01J37/16
摘要： A catalyst comprises an active phase constituted by palladium, and a porous support comprising at least one refractory oxide selected from the group constituted by silica, alumina and silica-alumina, in which: the palladium content in the catalyst is in the range 0.0025% to 1% by weight with respect to the total weight of catalyst; at least 80% by weight of the palladium is distributed in a crust at the periphery of the porous support, the thickness of said crust being in the range 25 to 450 μm; the specific surface area of the porous support is in the range 70 to 160 m2/g; the metallic dispersion D of the palladium is less than 20%.
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公开(公告)号：US20200094226A1
公开(公告)日：2020-03-26
申请号：US16681196
申请日：2019-11-12
申请人： Sud-Chemie Inc.
发明人： Normen Szesni , Alfred Hagemeyer , Frank Grossmann , Richard Fischer , Michael Urbancic , Claus Lugmair , Mingyong Sun , Hongyi C. Hou , David Michael Lowe , Jennifer Boyer
IPC分类号： B01J23/44 , B01J23/58 , B01J23/52 , B01J23/50 , B01J23/60 , B01J23/62 , C07C7/167 , B01J37/02 , B01J23/644 , B01J35/00 , B01J35/10 , B01J23/89 , B01J31/02 , C10G45/40
摘要： This invention relates to heterogeneous catalysts useful for selective hydrogenation of unsaturated hydrocarbons, comprising palladium and optionally a promoter, supported on a substrate, having an uncoated BET surface area of ≤9 m2/g, the surface being coated with an ionic liquid. Also described are methods of making the catalysts and methods of selective hydrogenation of acetylene and/or dienes in front-end mixed olefin feed streams.
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公开(公告)号：US10357754B2
公开(公告)日：2019-07-23
申请号：US15963136
申请日：2018-04-26
发明人： Vasily Simanzhenkov , Leonid Modestovich Kustov , Aleksey Victorovich Kucherov , Elena Dmitrievna Finashina , Xiaoliang Gao , Edward Christopher Foy , Claire Jeannine Ennis
IPC分类号： B01J19/00 , B01J19/24 , B01J23/74 , B01J23/84 , B01J27/04 , B01J35/02 , B01J35/10 , C07B39/00 , C08F110/02 , C10G9/36 , C10G27/04 , C10G45/32 , C10G70/04 , C07C5/48 , C07C7/167 , C10G70/00 , C10G70/02 , B01J23/00 , B01J35/06 , C10G55/04 , C07C51/16 , C07C67/04 , B01J23/28 , B01J23/755 , B01J23/847 , B01J27/057
摘要： Oxidative dehydrogenation of paraffins to olefins provides a lower energy route to produce olefins. Oxidative dehydrogenation processes may be integrated with a number of processes in a chemical plant such as polymerization processes, manufacture of glycols, and carboxylic acids and esters. Additionally, oxidative dehydrogenation processes can be integrated with the back end separation process of a conventional steam cracker to increase capacity at reduced cost.
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公开(公告)号：US10245583B1
公开(公告)日：2019-04-02
申请号：US15702413
申请日：2017-09-12
发明人： Ryan W. Snell , Zongxuan Hong
IPC分类号： B01J23/44 , B01J21/04 , B01J21/06 , B01J31/02 , C07C7/167 , B01J31/28 , B01J37/02 , B01J37/16
摘要： A composition containing a supported hydrogenation catalyst comprising palladium and a support, wherein the supported hydrogenation catalyst is capable of selectively hydrogenating highly unsaturated hydrocarbons to unsaturated hydrocarbons, and a dopant, wherein the dopant comprises at least one component selected from zwitterions, ylides, betaines, or combinations thereof. A method of making a selective hydrogenation catalyst by contacting a support with a palladium-containing compound to form a supported-palladium composition, contacting the supported-palladium composition with a dopant to form a selective hydrogenation catalyst precursor, wherein the dopant comprises at least one component selected from zwitterions, ylides, betaines, or combinations thereof, and reducing the selective hydrogenation catalyst precursor to form the selective hydrogenation catalyst. A selective hydrogenation catalyst produced via the method of making a selective hydrogenation catalyst, and a method of selectively hydrogenating highly unsaturated hydrocarbons to an unsaturated hydrocarbon enriched composition are also provided.
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公开(公告)号：US10232360B1
公开(公告)日：2019-03-19
申请号：US15702411
申请日：2017-09-12
发明人： Ryan W. Snell , Zongxuan Hong
IPC分类号： B01J23/44 , B01J21/04 , B01J21/06 , B01J31/02 , C07C7/167 , B01J31/28 , B01J37/02 , B01J37/16
摘要： A composition comprising a supported hydrogenation catalyst comprising palladium and a support, wherein the supported hydrogenation catalyst is capable of selectively hydrogenating highly unsaturated hydrocarbons to unsaturated hydrocarbons; and a dopant comprising a fluorene structure. A method of making a selective hydrogenation catalyst including contacting a support with a palladium-containing compound to form a supported-palladium composition; contacting the supported-palladium composition with a dopant comprising a fluorene structure group to form a selective hydrogenation catalyst precursor; and reducing the selective hydrogenation catalyst precursor to form the selective hydrogenation catalyst. A method of selectively hydrogenating highly unsaturated hydrocarbons to an unsaturated hydrocarbon enriched composition by contacting a supported catalyst comprising palladium and a dopant comprising a fluorene structure with a feed comprising highly unsaturated hydrocarbon under conditions suitable for hydrogenating at least a portion of the highly unsaturated hydrocarbon feed to form the unsaturated hydrocarbon enriched composition.
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7.发明申请公开(公告)号：US20190076832A1
公开(公告)日：2019-03-14
申请号：US15702413
申请日：2017-09-12
发明人： Ryan W. Snell , Zongxuan Hong
摘要： A composition containing a supported hydrogenation catalyst comprising palladium and a support, wherein the supported hydrogenation catalyst is capable of selectively hydrogenating highly unsaturated hydrocarbons to unsaturated hydrocarbons, and a dopant, wherein the dopant comprises at least one component selected from zwitterions, ylides, betaines, or combinations thereof. A method of making a selective hydrogenation catalyst by contacting a support with a palladium-containing compound to form a supported-palladium composition, contacting the supported-palladium composition with a dopant to form a selective hydrogenation catalyst precursor, wherein the dopant comprises at least one component selected from zwitterions, ylides, betaines, or combinations thereof, and reducing the selective hydrogenation catalyst precursor to form the selective hydrogenation catalyst. A selective hydrogenation catalyst produced via the method of making a selective hydrogenation catalyst, and a method of selectively hydrogenating highly unsaturated hydrocarbons to an unsaturated hydrocarbon enriched composition are also provided.
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公开(公告)号：US20180178187A1
公开(公告)日：2018-06-28
申请号：US15901415
申请日：2018-02-21
IPC分类号： B01J19/24 , C07C6/04 , C10G50/00 , C10G45/32 , C10G9/36 , C07C7/05 , C07C7/163 , C07C7/167 , C07C7/177 , C07C11/06 , C07C11/10
摘要： Producing C5 olefins from steam cracker C5 reeds may include reacting a mixed hydrocarbon stream comprising cyclopentadiene, C5 olefins, and C6+ hydrocarbons in a dimerization reactor where cyclopentadiene is dimerized to dicyclopentadiene. The dimerization reactor effluent may be separated into a traction comprising the C6+ hydrocarbons and dicyclopentadiene and a second fraction comprising C5 olefins and C5 dienes. The second fraction, a saturated hydrocarbon diluent stream, and hydrogen may be fed to a catalytic distillation reactor system for concurrently separating linear C5 olefins from saturated hydrocarbon diluent, cyclic C5 olefins, and C5 dienes contained in the second fraction and selectively hydrogenating C5 dienes. An overhead distillate including the linear C5 olefins and a bottoms product including cyclic C5 olefins are recovered from the catalytic distillation reactor system. Other aspects of the C5 olefin systems and processes, including catalyst configurations and control schemes, are also described.
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公开(公告)号：US20180147563A1
公开(公告)日：2018-05-31
申请号：US15824310
申请日：2017-11-28
发明人： Malika BOUALLEG , Priscilla AVENIER
IPC分类号： B01J23/44 , C07C7/163 , C07C7/167 , B01J21/04 , B01J35/10 , B01J37/02 , B01J37/10 , B01J37/08 , B01J37/16
摘要： A catalyst comprises an active phase constituted by palladium, and a porous support comprising at least one refractory oxide selected from the group constituted by silica, alumina and silica-alumina, in which: the palladium content in the catalyst is in the range 0.0025% to 1% by weight with respect to the total weight of catalyst; at least 80% by weight of the palladium is distributed in a crust at the periphery of the porous support, the thickness of said crust being in the range 25 to 450 μm; the specific surface area of the porous support is in the range 70 to 160 m2/g; the metallic dispersion D of the palladium is less than 20%.
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公开(公告)号：US09957211B2
公开(公告)日：2018-05-01
申请号：US15308884
申请日：2015-05-07
CPC分类号： C07C41/06 , C07C7/005 , C07C7/04 , C07C7/13 , C07C7/163 , C07C7/167 , C07C43/046 , C07C11/08 , C07C11/09
摘要： The present invention provides, among other things, new processes for separating and purifying C4 fractions from a crude C4 stream. Compared to prior methods, the processes of the present invention simplify the C4 separation processes, afford more possible configurations for separation and purification, and are more cost effective. The processes and systems provided herein can be used as part of a cost-effective and efficient method for synthesizing methyl tertiary-butyl ether.
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