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公开(公告)号：US20190291080A1
公开(公告)日：2019-09-26
申请号：US16358802
申请日：2019-03-20
发明人： Vasily Simanzhenkov , Xiaoliang Gao , David Sullivan , Yipei Styles , Yoonhee Kim , Hanna Drag , Marie Barnes
摘要： Mixed metal oxide catalysts having an amorphous content of not less than 40 wt. % are prepared by calcining the catalyst precursor fully or partially enclosed by a porous material having a melting temperature greater than 600° C. in an inert container including heating the catalyst precursor at a rate from 0.5 to 10° C. per minute from room temperature to a temperature from 370° C. to 540° C. under a stream of pre heated gas chosen from steam and inert gas and mixtures thereof at a pressure of greater than or equal to 1 psig having a temperature from 300° C. to 540° C. and holding the catalyst precursor at that temperature for at least 2 hours and cooling the catalyst precursor to room temperature.
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公开(公告)号：US20180193827A1
公开(公告)日：2018-07-12
申请号：US15839947
申请日：2017-12-13
CPC分类号： B01J37/12 , B01J23/002 , B01J23/28 , B01J27/0576 , B01J35/002 , B01J35/006 , B01J35/1009 , B01J35/1014 , B01J37/0009 , B01J37/009 , B01J37/031 , B01J37/04 , B01J37/06 , B01J37/08 , B01J37/088 , B01J37/10 , B01J2523/00 , C07C5/3332 , C07C5/48 , C07C2523/20 , C07C2523/22 , C07C2523/28 , C07C2527/057 , Y02P20/52 , B01J2523/55 , B01J2523/56 , B01J2523/64 , B01J2523/68 , C07C11/04
摘要： Oxidative dehydrogenation catalysts comprising MoVNbTeO having improved consistency of composition and a 25% conversion of ethylene at less than 420° C. and a selectivity to ethylene above 95% are prepared by treating the catalyst precursor with H2O2 in an amount equivalent to 0.30-2.8 mL H2O2 of a 30% solution per gram of catalyst precursor prior to calcining and treating the resulting catalyst with the equivalent amount of peroxide after calcining.
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公开(公告)号：US10589258B2
公开(公告)日：2020-03-17
申请号：US15651366
申请日：2017-07-17
发明人： Vasily Simanzhenkov , Xiaoliang Gao , David Jeffrey Sullivan , Hanna Drag , Marie Annette Barnes
IPC分类号： B01J27/057 , B01J23/00 , B01J23/28 , B01J37/00 , B01J37/06 , B01J37/08 , B01J37/10 , C07C5/48
摘要： The preparation of an oxidative dehydrogenation catalyst comprising Mo, V, Nb and Te using a hydrothermal step the activity and reproducibility of the catalyst is improved by conduction the hydrothermal step at higher pressures while permitting gaseous products to leave the reactor. In some instances a condenser may be upstream of the pressure relief valve.
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公开(公告)号：US10406517B2
公开(公告)日：2019-09-10
申请号：US15839947
申请日：2017-12-13
IPC分类号： B01J23/00 , B01J37/00 , B01J37/06 , B01J37/08 , B01J37/12 , C07C5/333 , B01J37/03 , B01J37/04 , B01J37/10 , B01J23/28 , B01J27/057 , B01J35/00 , C07C5/48 , B01J35/10
摘要： Oxidative dehydrogenation catalysts comprising MoVNbTeO having improved consistency of composition and a 25% conversion of ethylene at less than 420° C. and a selectivity to ethylene above 95% are prepared by treating the catalyst precursor with H2O2 in an amount equivalent to 0.30-2.8 mL H2O2 of a 30% solution per gram of catalyst precursor prior to calcining and treating the resulting catalyst with the equivalent amount of peroxide after calcining.
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公开(公告)号：US20190240647A1
公开(公告)日：2019-08-08
申请号：US16261917
申请日：2019-01-30
发明人： Xiaoliang Gao , Vasily Simanzhenkov , Marie Barnes , David Sullivan , Hanna Drag , Yoonhee Kim , Perry de Wit
IPC分类号： B01J27/057 , B01J23/00 , B01J23/28 , B01J23/22 , B01J37/04 , B01J37/08 , B01J37/06 , B01J37/00 , C07C5/48
摘要： A process for preparing an oxidative dehydrogenation catalyst or oxidative dehydrogenation catalyst precursor that includes mixing solutions of molybdenum and tellurium at a pH from about 3.3 to 7.5; adjusting the pH of the resulting solution back to about 5 and adding VOSO4 and adding a solution of Nb2O5 and oxalic acid and treating the resulting precursor slurry in a controlled pressure hydrothermal process to obtain the catalyst.
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公开(公告)号：US20180021760A1
公开(公告)日：2018-01-25
申请号：US15651366
申请日：2017-07-17
发明人： Vasily Simanzhenkov , Xiaoliang Gao , David Jeffrey Sullivan , Hanna Drag , Marie Annette Barnes
摘要： The preparation of an oxidative dehydrogenation catalyst comprising Mo, V, Nb and Te using a hydrothermal step the activity and reproducibility of the catalyst is improved by conduction the hydrothermal step at higher pressures while permitting gaseous products to leave the reactor. In some instances a condenser may be upstream of the pressure relief valve.
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公开(公告)号：US11638915B2
公开(公告)日：2023-05-02
申请号：US16527096
申请日：2019-07-31
IPC分类号： B01J23/28 , B01J27/057 , B01J37/12 , C07C5/333 , B01J23/00 , B01J37/06 , B01J37/00 , B01J37/08 , B01J35/00 , B01J37/03 , B01J37/04 , B01J37/10 , C07C5/48 , B01J35/10
摘要： Oxidative dehydrogenation catalysts comprising MoVNbTeO having improved consistency of composition and a 25% conversion of ethylene at less than 420° C. and a selectivity to ethylene above 95% are prepared by treating the catalyst precursor with H2O2 in an amount equivalent to 0.30-2.8 mL H2O2 of a 30% solution per gram of catalyst precursor prior to calcining and treating the resulting catalyst with the equivalent amount of peroxide after calcining.
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公开(公告)号：US11077430B2
公开(公告)日：2021-08-03
申请号：US16879976
申请日：2020-05-21
发明人： Vasily Simanzhenkov , Xiaoliang Gao , David Sullivan , Hanna Drag , Leonid Modestovich Kustov , Aleksey Victorovich Kucherov , Elena Dmitrievna Finashina
IPC分类号： B01J27/057 , B01J37/03 , B01J37/12 , B01J35/02 , C07C5/48 , B01J37/10 , B01J23/00 , B01J23/28 , B01J35/00 , B01J37/00 , B01J37/06 , B01J37/08
摘要： Oxidative dehydrogenation catalysts comprising MoVNbTeO having improved consistency of composition and a 25% conversion of ethylene at less than 420° C. and a selectivity to ethylene above 95% are prepared by treating the catalyst precursor with H2O2 in an amount equivalent to 0.30-2.8 mL H2O2 of a 30% solution per gram of catalyst precursor prior to calcining.
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公开(公告)号：US10695754B2
公开(公告)日：2020-06-30
申请号：US16421664
申请日：2019-05-24
发明人： Vasily Simanzhenkov , Xiaoliang Gao , David Jeffrey Sullivan , Hanna Drag , Leonid Modestovich Kustov , Aleksey Victorovich Kucherov , Elena Dmitrievna Finashina
IPC分类号： B01J27/057 , B01J37/03 , B01J37/12 , B01J35/02 , C07C5/48 , B01J37/10 , B01J23/00 , B01J23/28 , B01J35/00 , B01J37/00 , B01J37/06 , B01J37/08
摘要： Oxidative dehydrogenation catalysts comprising MoVNbTeO having improved consistency of composition and a 25% conversion of ethylene at less than 420° C. and a selectivity to ethylene above 95% are prepared by treating the catalyst precursor with H2O2 in an amount equivalent to 0.30-2.8 mL H2O2 of a 30% solution per gram of catalyst precursor prior to calcining.
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公开(公告)号：US20190381492A1
公开(公告)日：2019-12-19
申请号：US16527096
申请日：2019-07-31
IPC分类号： B01J37/12 , B01J23/00 , B01J23/28 , B01J27/057 , B01J35/00 , B01J37/00 , B01J37/03 , B01J37/04 , B01J37/06 , B01J37/08 , B01J37/10 , C07C5/333 , C07C5/48
摘要： Oxidative dehydrogenation catalysts comprising MoVNbTeO having improved consistency of composition and a 25% conversion of ethylene at less than 420° C. and a selectivity to ethylene above 95% are prepared by treating the catalyst precursor with H2O2 in an amount equivalent to 0.30-2.8 mL H2O2 of a 30% solution per gram of catalyst precursor prior to calcining and treating the resulting catalyst with the equivalent amount of peroxide after calcining.
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