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公开(公告)号：US11046897B2
公开(公告)日：2021-06-29
申请号：US16415033
申请日：2019-05-17
Applicant: ExxonMobil Research and Engineering Company
Inventor： Chuansheng Bai , Majosefina Cunningham , Gregory R. Johnson , Wenyih F. Lai , Brandon J. O'Neill
Abstract: Methods are provided for performing selective hydrodesulfurization on a naphtha boiling range stream naphtha boiling range portion of a feed. It has been unexpectedly discovered that hydrodesulfurization with improved octane retention can be performed by using a catalyst that comprises CoMo supported on a catalyst support that includes a zeotype framework. By using a catalyst support including a zeotype framework, an unexpectedly high amount of octane in the naphtha boiling range portion of the hydrodesulfurized effluent is maintained.
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公开(公告)号：US20210087474A1
公开(公告)日：2021-03-25
申请号：US17014999
申请日：2020-09-08
Applicant: ExxonMobil Research and Engineering Company
Inventor： Brandon J. O'Neill , Mark A. Deimund , Ajit B. Dandekar
Abstract: Systems and methods are provided for conversion of a combined feed of oxygenates (such as methanol or dimethyl ether) and olefins to a high octane naphtha boiling range product with a reduced or minimized aromatics content. The oxygenate conversion can be performed under conditions that reduce or minimize hydrogen transfer. Optionally, a catalyst that further facilitates formation of branched paraffins can be used, such as a catalyst that has some type of 12-member ring site available on the catalyst surface.
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公开(公告)号：US20200239782A1
公开(公告)日：2020-07-30
申请号：US16741889
申请日：2020-01-14
Applicant: ExxonMobil Research and Engineering Company
Inventor： Brandon J. O'Neill
Abstract: Systems and methods are provided for conversion of oxygenate-containing feeds to a hydrocarbon effluent that includes a naphtha boiling range portion with an increased research octane number and/or increased octane rating. The conditions for converting the oxygenate-containing feed can correspond to conversion conditions for fluidized bed operation and/or moving bed operation, with a low acidity catalyst that also includes phosphorus to improve the hydrogen transfer rate relative to the expected hydrogen transfer rate for a low acidity catalyst. In addition to providing a naphtha fraction with an improved research octane number and/or octane rating, the amount of durene in the naphtha fraction can be reduced or minimized.
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公开(公告)号：US10240094B2
公开(公告)日：2019-03-26
申请号：US15862977
申请日：2018-01-05
Applicant: ExxonMobil Research and Engineering Company
Inventor： Brandon J. O'Neill , Stephen J. McCarthy , Mark A. Deimund , Ajit B. Dandekar
IPC: C07C1/20 , C10G3/00 , B01J29/40 , B01J29/70 , B01J27/14 , B01J29/06 , B01J35/10 , B01J8/08 , C07C1/12 , B01J8/02
Abstract: Systems and methods are provided for modifying the composition of the conversion catalyst in a reactor for oxygenate conversion during conversion of an oxygenate feed to allow for adjustment of the slate of conversion products. The modification of the conversion catalyst can be performed by introducing a substantial portion (relative to the amount of catalyst inventory in the reaction system) of make-up catalyst having a distinct composition relative to the conversion catalyst in the reaction system. Introducing the distinct composition of make-up catalyst can modify the composition of the conversion catalyst in the reactor to allow for changes in the resulting product slate. By introducing the distinct catalyst composition, the conversion catalyst in the reactor can correspond to a different composition of catalyst than the overall average catalyst composition within the catalyst inventory in the reaction system.
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公开(公告)号：US11001767B2
公开(公告)日：2021-05-11
申请号：US16849409
申请日：2020-04-15
Applicant: ExxonMobil Research and Engineering Company
Inventor： William R. Gunther , Brandon J. O'Neill
Abstract: Methods and systems for the conversion of hydrocarbon feedstocks, in particular, naphtha feedstocks, into a hydrocarbon product stream containing a high yield of high-octane gasoline and chemicals products. In particular, the conversion takes place over a series of functionally distinctive catalyst beds, at least one of which includes a modified zeolitic catalyst comprising a zeolite, a transition metal, and optionally a binder. Systems provided include a hydrocarbon feed stream, which may be full-range naphtha, a hydrocarbon product stream, and a plurality of functionally distinctive catalyst beds arranged in series, wherein at least one of the catalyst beds comprises a modified zeolitic catalyst. A hydrocarbon feed stream may be conveyed through the plurality of functionally distinctive catalyst beds, producing an intermediate hydrocarbon stream between each, under conditions effective to convert the hydrocarbon feed stream to a hydrocarbon product stream comprising high-octane gasoline, xylenes, benzene, and/or toluene.
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Patent Agency Ranking
公开(公告)号：US20200061593A1
公开(公告)日：2020-02-27
申请号：US16545464
申请日：2019-08-20
Applicant: ExxonMobil Research and Engineering Company
Inventor： Preeti Kamakoti , Scott J. Weigel , Karl G. Strohmaier , Helge Jaensch , Marc H. Anthonis , Martine Dictus , Brita Engels , Darryl D. Lacy , Sina Sartipi , Brandon J. O'Neill
Abstract: Processes are provided for preparing molecular sieves of framework structure MEI, TON, MRE, MWW, MFS, MOR, FAU, EMT, or MSE. The process involves preparing a synthesis mixture for the molecular sieve wherein the synthesis mixture includes a morphology modifier L selected from the group consisting of cationic surfactants having a quaternary ammonium group comprising at least one hydrocarbyl group having at least 12 carbon atoms, nonionic surfactants, anionic surfactants, sugars and combinations thereof.
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公开(公告)号：US20220290057A1
公开(公告)日：2022-09-15
申请号：US17634962
申请日：2020-07-14
Applicant: ExxonMobil Research and Engineering Company
Inventor： Brandon J. O'Neill , Joseph M. Falkowski , Allen W. Burton , Scott J. Weigel
Abstract: A hydrocarbon feed stream, particularly one comprising heavier hydrocarbons, may be converted to valuable products such as motor gasoline and/or lubricating oil by employing one or more MOF catalysts, which may be prepared from a precursor metal-organic framework (MOF). A MOF catalyst may be prepared by exchanging one or more organic linking ligands of the precursor MOF for an organic linking ligand having a different acidity and/or electron-withdrawing properties, which, in turn, may affect catalytic activity.
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公开(公告)号：US20220106529A1
公开(公告)日：2022-04-07
申请号：US17060126
申请日：2020-10-01
Applicant: ExxonMobil Research and Engineering Company
Inventor： Matthew T. Kapelewski , Lei Zhang , Brandon J. O'Neill
Abstract: Processes for the catalytic conversion of alcohols and/or ethers to olefins over zeolite catalysts are described. ZSM-48 and metal containing variants, such as Zn ZSM-48, produce high yields of olefins, particularly ethylene or C3+ olefins, between 200 and 500° C.
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公开(公告)号：US20220106239A1
公开(公告)日：2022-04-07
申请号：US17060120
申请日：2020-10-01
Applicant: ExxonMobil Research and Engineering Company
Inventor： Matthew T. Kapelewski , Lei Zhang , Brandon J. O'Neill
Abstract: Processes for the catalytic conversion of alcohols and/or ethers to olefins over zeolite catalysts are described. Self-bound ZSM-5 and metal containing variants, such as Zn ZSM-5, produce high yields of olefins, particularly C3+ olefins, between 250 and 450° C.
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公开(公告)号：US20200290027A1
公开(公告)日：2020-09-17
申请号：US16807500
申请日：2020-03-03
Applicant: ExxonMobil Research and Engineering Company
Inventor： Brandon J. O'Neill , Scott J. Weigel
Abstract: Methods are provided for formulation of catalysts with improved catalyst exposure lifetimes under oxygenate conversion conditions. In various additional aspects, methods are described for performing oxygenate conversion reactions using such catalysts with improved catalyst exposure lifetimes. The catalyst formulation methods can include formulation of oxygenate conversion catalysts with binders that are selected from binders having a surface area of roughly 250 m2/g or less, or 200 m2/g or less. In various aspects, during formulation, a weak base can be added to the zeotype crystals, to the binder material, or to the mixture of the zeotype and the binder. It has been unexpectedly discovered that addition of a weak base, so that the weak base is present in at least one component of the binder mixture prior to formulation, can result in longer catalyst exposure lifetimes under methanol conversion conditions.
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