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公开(公告)号：US10287230B2
公开(公告)日：2019-05-14
申请号：US15829008
申请日：2017-12-01
Applicant: ExxonMobil Research and Engineering Company
Inventor： Michael P. Lanci , Joshua W. Allen , Jarid M. Metz , Victor DeFlorio , Jihad M. Dakka , Bryan A. Patel , Michael Salciccioli , Michael W. Weber , Stephen Zushma
Abstract: A process for selective oxidation of dimethyl-1,1′-biphenyl(s) to form methyl-1,1′-biphenyl mono-carboxylic acid(s), which can be esterified to form plasticizers, comprising contacting a solution of dimethyl-1,1′-biphenyl(s) in acetic acid in the presence of an oxidation catalyst and air under time and temperature conditions sufficient to oxidize the dimethyl-1,1′-biphenyl(s) into one or more methyl-1,1′-biphenyl mono-carboxylic acid(s) products, conducting at least one of (i) adding an antisolvent, or (ii) optimizing a total conversion of dimethyl-1,1′-biphenyl(s) by oxidation based upon a molar ratio of dimethyl-1,1′-biphenyl isomers, or (iii) precipitating the methyl-1,1′-biphenyl mono-carboxylic acid(s) products by lowering the temperature, or (iv) decreasing the oxidation reaction temperature to enhance conversion of aldehydes over methyl functional groups, so as to limit over-oxidation of the dimethyl-1,1′-biphenyl(s), wherein the oxidation reaction is conducted in the absence of bromide-containing catalysts.
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公开(公告)号：US20210363080A1
公开(公告)日：2021-11-25
申请号：US17325755
申请日：2021-05-20
Applicant: ExxonMobil Research and Engineering Company
Inventor： Peter H. Galebach , Michael P. Lanci , George W. Huber , Wenzhao Wu , Ashley M. Wittrig , Nathaniel M. Eagan , Paolo Andres Cuello Penaloza , J. Scott Buchanan
IPC: C07C29/151 , C10G11/04 , B01J21/04 , B01J23/06 , C10G11/18 , B01J37/16 , C07C29/154
Abstract: Processes for producing alcohols from biomass are provided. The processes utilize supercritical methanol to depolymerize biomass with subsequent conversion to a mixture of alcohols. In particular the disclosure relates to continuous processes which produce high yields of alcohols through recycling gases and further employ dual reactor configurations which improve overall alcohol yields. Processes for producing higher ethers and olefins from the so-formed alcohols, through alcohol coupling and subsequent dehydration are also provided. The resulting distillate range ethers and olefins are useful as components in liquid fuels, such as diesel and jet fuel.
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公开(公告)号：US10676412B2
公开(公告)日：2020-06-09
申请号：US16366025
申请日：2019-03-27
Applicant: ExxonMobil Research and Engineering Company
Inventor： Michael P. Lanci , Changyub Paek , Catherine M. Dorsi
Abstract: In a process for separating dimethyl biphenyl isomers a mixture comprising one or more 3,3′, 3,4′- or 4,4′-dimethyl biphenyl isomers, one or more 2,X′-dimethyl biphenyl isomers (where X=2, 3, or 4) and one or more further hydrocarbon components is contacted with a first adsorbent, thereby selectively adsorbing one or more of the dimethyl biphenyl isomers within the first adsorbent. A first raffinate stream containing less selectively adsorbed components is withdrawn from the first adsorbent and a first extract stream containing selectively adsorbed dimethyl biphenyl isomers is withdraw. The selectively adsorbed dimethyl biphenyl isomers comprise one or more of 3,3′-, 3,4′- or 4,4′-dimethyl biphenyl isomers and one or more of 2,X′-dimethyl biphenyl isomers (where X′=2, 3, or 4).
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公开(公告)号：US10138176B2
公开(公告)日：2018-11-27
申请号：US15886408
申请日：2018-02-01
Applicant: ExxonMobil Research and Engineering Company
Inventor： Michael P. Lanci , Changyub Paek , Catherine M. Dorsi
Abstract: In a process for producing one or more 3,3′-, 3,4′- and 4,4′-dimethyl biphenyl isomers, a feed comprising toluene is contacted with hydrogen in the presence of a hydroalkylation catalyst under conditions effective to produce a hydroalkylation reaction product comprising (methylcyclohexyl)toluenes. At least part of the hydroalkylation reaction product is dehydrogenated in the presence of a dehydrogenation catalyst under conditions effective to produce a dehydrogenation reaction product comprising a mixture of dimethyl biphenyl isomers. The dehydrogenation reaction product is then separated into at least a first stream containing one or more 3,3′-, 3,4′- and 4,4′-dimethyl biphenyl isomers and at least one second stream comprising one or more 2,X′-dimethyl biphenyl isomers (where X is 2, 3, or 4). The 3,3′-, 3,4′- and 4,4′-dimethyl biphenyl isomers are then separated utilizing selective adsorption.
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