Bing Zhou - Cranbury NJ, US Horacio Trevino - Annandale NJ, US Zhihua Wu - Plainsboro NJ, US Zhenhua Zhou - Lawrenceville NJ, US Changkun Liu - Lawrenceville NJ, US
A catalyst manufacturing process includes heat treating an intermediate catalyst composition that includes catalyst nanoparticles having catalyst atoms in a non-zero oxidation state bonded to a dispersing/anchoring agent. The catalyst nanoparticles are formed using a dispersing agent having at least one functional group selected from the group of a hydroxyl, a carboxyl, a carbonyl, an amide, an amine, a thiol, a sulfonic acid, sulfonyl halide, an acyl halide, an organometallic complex, and combinations of these. The dispersing agent can be used to form single- or multicomponent supported nanocatalysts. The dispersing agent also acts as an anchoring agent to firmly bond the nanocatalyst to a support. Performing the heat treating process in an inert or oxidative environment to maintain the catalyst atoms in a non-zero oxidation helps maintains a stronger bonding interaction between the dispersing agent and the catalyst atoms. This, in turn, increases the dispersion and/or distribution of catalyst components throughout the supported catalyst.
Reforming Nanocatalysts And Methods Of Making And Using Such Catalysts
Catalysts suitable for use in reforming hydrocarbons have a halogen promoter and a plurality of dispersed nanocatalyst particles supported on a solid support. The dispersed nanocatalyst particles are manufactured using a dispersing agent to control the size and/or crystal face exposure of the particles. The controlled size and dispersion of the nanocatalyst particles allows the reforming catalyst to be loaded with significantly less halogen promoter while still maintaining or increasing the catalyst's reforming performance. The catalysts of the present invention have shown improved C production with the significantly reduced levels of halogen promoter.
Reforming Catalysts Having A Controlled Coordination Structure And Methods For Preparing Such Compositions
The reforming catalysts include a halogen promoter and a plurality of nanocatalyst particles supported on a support material. The nanocatalyst particles have a controlled crystal face exposure of predominately (110). The controlled coordination structure is manufactured by reacting a plurality of catalyst atoms with a control agent such as polyacrylic acid and causing or allowing the catalyst atoms to form nanocatalyst particles. The catalysts are used in a reforming reaction to improve the octane number of gasoline feedstock. The reforming catalysts show improved C hydrocarbon production and improved octane barrel number increases as compared to commercially available reforming catalysts.
Hydroconversion Processes Employing Multi-Metallic Catalysts And Method For Making Thereof
Theodorus Ludovicus Michael Maesen - Richmond CA, US Alexander E. Kuperman - Orinda CA, US Horacio Trevino - Richmond CA, US
Assignee:
Chevron U.S.A. Inc. - San Ramon CA
International Classification:
C07F 7/00 C07F 1/00 B01J 27/02
US Classification:
556 28, 556 31, 502216
Abstract:
A catalyst precursor composition and methods for making such a catalyst precursor are disclosed. The catalyst precursor comprises at least a promoter metal selected from Group VIII, Group IIB, Group IIA, Group IVA and combinations thereof having an oxidation state of +2 or +4, at least one Group VIB metal having an oxidation state of +6, and at least one organic oxygen-containing ligand. Catalysts prepared from the sulfidation of such catalyst precursors are used in the hydroprocessing of hydrocarbon feeds.
Andrzej M. Malek - Doylestown PA, US Stephen C. Leviness - Tulsa OK, US Horacio M. Trevino - Annandale NJ, US Weldon K. Bell - Ridgeway IA, US David O. Marler - Morris Plains NJ, US
Assignee:
ExxonMobil Research and Engineering Company - Annandale NJ
Dispersed Active Metal catalyst for hydrogenation reactions is produced by treating a substantially catalytically inactive metal particulate with a solution capable of oxidizing the metal particulate and comprising of at least one compound of a hydrogenation catalyst metal thereby forming a layer of at least one of hydroxides and oxides thereon. The metal particulate is activated by treatment with a hydrogen-containing gas at elevated temperatures to form a porous layer of Dispersed Active Metal catalyst. Preferably, the treated metal particulate is dried prior to activation, and also preferably calcined in an oxidant-containing atmosphere prior to activation. The treatment solution may advantageously contain a compound of at least one promoter metal for the added catalyst metal. The porosity of the layer provides enhanced catalyst activity as well as improved methane selectivity in the Fischer-Tropsch process.
Andrzej Malek - Doylestown PA, US Stephen Leviness - Tulsa OK, US Horacio Trevino - Annandale NJ, US Weldon Bell - Ridgeway IA, US David Marler - Morris Plains NJ, US
International Classification:
C07C027/06
US Classification:
518/717000, 502/020000
Abstract:
A process for enhancing the activity of a catalyst metal particulate for hydrogenation reactions comprising calcining the particulate in an oxidant-containing atmosphere to partially oxidize it thereby forming a porous layer of oxides thereon, treating with an solution capable of oxidizing the calcined metal particulate and comprising a compound of a hydrogenation catalyst metal to where said metal particulate has absorbed a volume of solution equal to at least about 10% of its calculated pore volume and activating it by treatment with a hydrogen-containing gas at elevated temperatures thereby forming a dispersed active metal catalyst. Preferably, the treated particulate is calcined a second time under the same conditions as the first before final activation with a hydrogen-containing gas. The metal particulate is preferably sized after each calcination and any agglomerates larger than 250 microns are comminuted to a desired size.
Reforming Nanocatalysts And Method Of Making And Using Such Catalysts
Bing Zhou - Cranbury NJ, US Horacio Trevino - Annandale NJ, US Zhihua Wu - Plainsboro NJ, US Zhenhua Zhou - Lawrenceville NJ, US Changkun Liu - Lawrenceville NJ, US
International Classification:
C10G 35/09 B01J 31/00
US Classification:
208138000, 502208000, 502150000, 502172000
Abstract:
Reforming nanocatalysts are formed using a dispersing agent to increase the activity, selectivity and longevity of the catalyst when used in a reforming process. The nanocatalyst particles are formed using a dispersing agent having at least one functional group selected from the group of a hydroxyl, a carboxyl, a carbonyl, an amide, an amine, a thiol, a sulfonic acid, sulfonyl halide, an acyl halide, an organometallic complex, and combinations of these. The dispersing agent is particularly useful for forming multicomponent catalysts comprising an alloy, combination, mixture, decoration, or interspersion of platinum and one or more of tin, rhenium or iridium. The formation of the nanoparticles may include a heat treating process performed in an inert or oxidative environment to maintain the catalyst atoms in a non-zero oxidation state to thereby maintain a stronger bond between the dispersing agent and the catalyst atoms. Multicomponent reforming catalysts having anchored nanocatalyst particles exhibit particularly good activity, selectivity and longevity when used in the reforming of naphtha and/or formation of BTX.
Process For Producing A Refinery Stream-Compatible Bio-Oil From A Lignocellulosic Feedstock
Douglas G. Naae - Sugar Land TX, US Jason C. Hicks - Fort Bend TX, US Jerome F. Mayer - Lincoln CA, US Horacio Trevino - Richmond CA, US Jose I. Villegas - Emeryville CA, US
Assignee:
Chevron USA, Inc. - San Ramon CA
International Classification:
C10L 1/02
US Classification:
44307, 435166, 422187
Abstract:
In one aspect, a method for rendering biomass-derived pyrolysis oil miscible with refinery hydrocarbons comprises mixing a high oxygen content bio-oil having an oxygen content of at least about 10 wt. % with a low oxygen content bio-oil having an oxygen content of less than about 8 wt. % to produce a blended oil. The blended oil may be hydrotreated to produce a deoxygenated hydrotreated mixture from which water is removed using a separator, resulting in a low oxygen content hybrid bio-oil intermediate miscible in refinery process streams. A portion of the low oxygen content hybrid bio-oil intermediate may be recycled with the high oxygen content bio-oil or removed for use in a refinery process stream for further hydroprocessing.
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