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公开(公告)号：US12060320B2
公开(公告)日：2024-08-13
申请号：US17434237
申请日：2020-03-25
Applicant: ExxonMobil Chemical Patents Inc.
Inventor： Paul Podsiadlo , Eric D. Metzger , Wenyih F. Lai , Ali A. Kheir , Dominick A. Zurlo , Jocelyn A. Gilcrest , Kathleen M. Keville
CPC classification number: C07C5/2737 , B01J29/70 , B01J35/615 , C01B39/48 , C01P2002/60 , C01P2006/12 , C07C2529/70
Abstract: Novel MEL framework type zeolites can be made to have small crystallite sizes and desirable silica/SiO2 molar ratios. Catalyst compositions comprising such MEL framework type zeolites can be particularly advantageous in isomerization C8 aromatic mixtures. An isomerization process for converting C8 aromatic hydrocarbons can advantageously utilize a catalyst composition comprising a MEL framework type zeolite.
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公开(公告)号：US20230021410A1
公开(公告)日：2023-01-26
申请号：US17781086
申请日：2020-11-16
Applicant: ExxonMobil Chemical Patents Inc.
Inventor： Umar Aslam , Meha Rungta , Chuansheng Bai , Ali A. Kheir , Paul Podsiadlo
Abstract: Catalyst compositions to perform selective alkyl-demethylation of C2+-hydrocarbyl-substituted aromatic hydrocarbon may exhibit a hydrogen chemisorption of at least 15% and comprise an oxide support material selected from the group consisting of an alkaline earth metal oxide, silica, a composite of an alkaline earth metal oxide and Al2O3, a composite of ZnO and Al2O3, a lanthanide oxide, a composite of a lanthanide oxide and Al2O3, and combinations and mixtures of two or more thereof; and a transition metal element dispersed upon the oxide support material. Alkyl-demethylation processes of a C6+ aromatic hydrocarbon-containing stream comprising C2+-hydrocarbyl-substituted aromatic hydrocarbons may comprise contacting the catalyst compositions in an alkyl-demethylation zone under alkyl-demethylation conditions to form an alkyl-demethylated aromatic hydrocarbon as an effluent exiting the alkyl-demethylation zone.
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公开(公告)号：US20220134318A1
公开(公告)日：2022-05-05
申请号：US17434222
申请日：2020-03-25
Applicant: ExxonMobil Chemical Patents Inc.
Inventor： Wenyih F. Lai , Paul Podsiadlo , Eric D. Metzger , Ivy D. Johnson , Ali A. Kheir , Dominick A. Zurlo , Kathleen M. Keville
IPC: B01J29/40 , C01B39/40 , B01J37/00 , B01J37/06 , B01J37/08 , B01J37/30 , B01J35/10 , B01J35/02 , B01J29/80 , C07C5/27
Abstract: Novel MEL framework type zeolites can be made to have small crystallite sizes and desirable silica/SiCb molar ratios. Catalyst compositions comprising such MEL framework type zeolites can be particularly advantageous in isomerization C8 aromatic mixtures. An isomerization process for converting C8 aromatic hydrocarbons can advantageously utilize a catalyst composition comprising a MEL framework type zeolite.
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公开(公告)号：US09688602B2
公开(公告)日：2017-06-27
申请号：US14201284
申请日：2014-03-07
Applicant: ExxonMobil Chemical Patents Inc.
Inventor： Jihad M. Dakka , Chuansheng Bai , James J. Tanke , Gregory J. De Martin , Mary T. Van Nostrand , Michael Salciccioli , Ali A. Kheir , Neeraj Sangar
CPC classification number: C07C67/08 , C07C2/74 , C07C5/367 , C07C2521/04 , C07C2521/08 , C07C2521/18 , C07C2523/42 , C07C2523/62 , C07C2529/76 , C07C2601/14 , C07C69/76 , C07C15/14 , C07C13/28
Abstract: In a process for producing a methyl-substituted biphenyl compound, at least one methyl-substituted cyclohexylbenzene compound of the formula: wherein each of m and n is independently an integer from 1 to 3, is contacted with a dehydrogenation catalyst under conditions effective to produce a dehydrogenation reaction product comprising at least one methyl-substituted biphenyl compound. The dehydrogenation catalyst comprises an element or compound thereof from Group 10 of the Periodic Table of Elements deposited on a refractory support, such as alumina.
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公开(公告)号：US10017433B2
公开(公告)日：2018-07-10
申请号：US15554211
申请日：2015-12-16
Applicant: ExxonMobil Chemical Patents Inc.
Inventor： Michael Salciccioli , Neeraj Sangar , Tan-Jen Chen , Emiel de Smit , Ali A. Kheir , Aaron B. Pavlish
CPC classification number: C07C6/126 , C07C2/74 , C07C5/11 , C07C5/367 , C07C2521/04 , C07C2529/08 , C07C2529/12 , C07C2529/70 , C07C2529/74 , C07C2601/14 , C07C13/28 , C07C15/14
Abstract: Processes for selectively alkylating and/or dealkylating one ring of cyclohexylbenzyl and/or biphenyl compounds are provided. Such selective alkylation and/or dealkylation takes place through a transalkylation reaction between the cyclohexylbenzyl compound and a substituted or unsubstituted benzene, which replaces the phenyl moiety of the cyclohexylbenzyl compound. The transalkylated cyclohexylbenzyl may be dehydrogenated to give a corresponding biphenyl compound. The same reaction steps can be utilized with respect to biphenyl compounds by first partially hydrogenating one phenyl ring of the biphenyl compound, thereby obtaining a corresponding cyclohexylbenzyl compound, which may undergo the transalkylation and, optionally, subsequent dehydrogenation. Combinations of any two or more of partial hydrogenation, transalkylation, and dehydrogenation enable targeted substitution (or de-substitution) of only one ring of cyclohexylbenzyl and/or biphenyl compounds, thereby providing superior control in designing the synthesis of these compounds.
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Patent Agency Ranking
公开(公告)号：US20160115095A1
公开(公告)日：2016-04-28
申请号：US14878753
申请日：2015-10-08
Applicant: ExxonMobil Chemical Patents Inc.
Inventor： Jihad M. Dakka , Lorenzo C. DeCaul , Gregory J. De Martin , Michael Salciccioli , Neeraj Sangar , Aaron B. Pavlish , Ali A. Kheir , Gary D. Mohr
IPC: C07C5/367
CPC classification number: C07C5/367 , B01J23/626 , B01J29/7476 , B01J37/0205 , B01J37/18 , B01J2229/186 , B01J2229/42 , C07C2/74 , C07C2521/04 , C07C2521/08 , C07C2523/14 , C07C2523/42 , C07C2523/62 , C07C2529/74 , C07C2601/14 , C07C15/14 , C07C13/28
Abstract: In a process for dehydrogenating cyclohexylbenzene and/or alkyl-substituted cyclohexylbenzene compounds, a dehydrogenation catalyst comprising at least one Group 10 metal compound on a support is heated in the presence of hydrogen from a first temperature from 0° C. to 200° C. to a second, higher temperature from 60° C. to 500° C. at a ramp rate no more than 100° C./hour. The dehydrogenation catalyst is contacted with hydrogen at the second temperature for a time from 3 to 300 hours to produce an activated dehydrogenation catalyst. A feed comprising cyclohexylbenzene and/or an alkyl-substituted cyclohexylbenzene compound is then contacted with hydrogen in the presence of the activated dehydrogenation catalyst under conditions effective to produce a dehydrogenation reaction product comprising biphenyl and/or an alkyl-substituted biphenyl compound.
Abstract translation: 在环己基苯和/或烷基取代的环己基苯化合物脱氢的方法中，在载体上包含至少一种第10族金属化合物的脱氢催化剂在0℃至200℃的第一温度下在氢气存在下加热。 到第二个更高的温度，从60℃到500℃，升温速率不超过100℃/小时。 脱氢催化剂在第二温度下与氢气接触3至300小时，以产生活化脱氢催化剂。 然后在有效产生包含联苯和/或烷基取代的联苯化合物的脱氢反应产物的条件下，在活化的脱氢催化剂存在下，将包含环己基苯和/或烷基取代的环己基苯化合物的进料与氢气接触。
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公开(公告)号：US20150361011A1
公开(公告)日：2015-12-17
申请号：US14723546
申请日：2015-05-28
Applicant: ExxonMobil Chemical Patents Inc.
Inventor： Michael Salciccioli , Tan-Jen Chen , Neeraj Sangar , Ali A. Kheir , Aaron B. Pavlish
CPC classification number: C07C2/74 , C07C5/10 , C07C5/11 , C07C5/367 , C07C6/126 , C07C2523/42 , C07C2523/44 , C07C2529/08 , C07C2529/18 , C07C2529/70 , C07C2529/74 , C07C2601/14 , C07C13/28 , C07C15/14
Abstract: In a process for producing dialkylbiphenyl compounds, a feed comprising substituted cyclohexylbenzene isomers having the formula (I): wherein each of R1 and R2 is an alkyl group and wherein the feed comprises m % by weight of isomers in which R1 is in the 2-position, based on the total weight of substituted cyclohexylbenzene isomers in the feed; is transalkylated with a compound of formula (II): to produce a transalkylation product comprising substituted cyclohexylbenzene isomers having the formula (I) and including n % by weight of isomers in which R1 is in the 2-position, based on the total weight of substituted cyclohexylbenzene isomers in the transalkylation product, wherein n
Abstract translation: 在制备二烷基联苯化合物的方法中，包含具有式（I）的取代的环己基苯异构体的进料：其中R1和R2各自为烷基，并且其中所述进料包含m％（重量）其中R 1为2- 基于进料中取代的环己基苯异构体的总重量; 与式（II）化合物进行烷基转移：产生包含具有式（I）的取代的环己基苯异构体的烷基转移产物，并且包括n重量％的R1在2-位的异构体，基于 在烷基转移产物中的取代的环己基苯异构体，其中n
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公开(公告)号：US20230023923A1
公开(公告)日：2023-01-26
申请号：US17781068
申请日：2020-12-01
Applicant: ExxonMobil Chemical Patents Inc.
Inventor： Chuansheng Bai , Ali A. Kheir , Eric D. Metzger , Christian A. Diaz Urrutia , Meha Rungta , Umar Aslam
Abstract: Disclosed are catalyst compositions comprising two or more metal elements with high performances for selective alkyl-demethylation of C2+-hydrocarbyl-substituted aromatics, processes for making such catalyst compositions, and alkyl-demethylation processes using same. Also disclosed are preferred processes for making alkyl-demethylation catalyst compositions including a high-temperature calcination step, and preferred alkyl-demethylation processes having a high H2/HC molar ratio.
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公开(公告)号：US20180050971A1
公开(公告)日：2018-02-22
申请号：US15554211
申请日：2015-12-16
Applicant: ExxonMobil Chemical Patents Inc.
Inventor： Michael Salciccioli , Neeraj Sangar , Tan-Jen Chen , Emiel de Smit , Ali A. Kheir , Aaron B. Pavlish
CPC classification number: C07C6/126 , C07C2/74 , C07C5/11 , C07C5/367 , C07C2521/04 , C07C2529/08 , C07C2529/12 , C07C2529/70 , C07C2529/74 , C07C2601/14 , C07C13/28 , C07C15/14
Abstract: Processes for selectively alkylating and/or dealkylating one ring of cyclohexylbenzyl and/or biphenyl compounds are provided. Such selective alkylation and/or dealkylation takes place through a transalkylation reaction between the cyclohexylbenzyl compound and a substituted or unsubstituted benzene, which replaces the phenyl moiety of the cyclohexylbenzyl compound. The transalkylated cyclohexylbenzyl may be dehydrogenated to give a corresponding biphenyl compound. The same reaction steps can be utilized with respect to biphenyl compounds by first partially hydrogenating one phenyl ring of the biphenyl compound, thereby obtaining a corresponding cyclohexylbenzyl compound, which may undergo the transalkylation and, optionally, subsequent dehydrogenation. Combinations of any two or more of partial hydrogenation, transalkylation, and dehydrogenation enable targeted substitution (or de-substitution) of only one ring of cyclohexylbenzyl and/or biphenyl compounds, thereby providing superior control in designing the synthesis of these compounds.
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公开(公告)号：US09896393B2
公开(公告)日：2018-02-20
申请号：US14723546
申请日：2015-05-28
Applicant: ExxonMobil Chemical Patents Inc.
Inventor： Michael Salciccioli , Tan-Jen Chen , Neeraj Sangar , Ali A. Kheir , Aaron B. Pavlish
CPC classification number: C07C2/74 , C07C5/10 , C07C5/11 , C07C5/367 , C07C6/126 , C07C2523/42 , C07C2523/44 , C07C2529/08 , C07C2529/18 , C07C2529/70 , C07C2529/74 , C07C2601/14 , C07C13/28 , C07C15/14
Abstract: In a process for producing dialkylbiphenyl compounds, a feed comprising substituted cyclohexylbenzene isomers having the formula (I): wherein each of R1 and R2 is an alkyl group and wherein the feed comprises m % by weight of isomers in which R1 is in the 2-position, based on the total weight of substituted cyclohexylbenzene isomers in the feed; is transalkylated with a compound of formula (II): to produce a transalkylation product comprising substituted cyclohexylbenzene isomers having the formula (I) and including n % by weight of isomers in which R1 is in the 2-position, based on the total weight of substituted cyclohexylbenzene isomers in the transalkylation product, wherein n
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