Patent classifications
B01J35/66
Systems and processes for reforming a liquid hydrocarbon fuel
According to one or more other aspects of the present disclosure, a system for reforming a liquid hydrocarbon fuel includes a mixing zone with a fuel intake fluidly coupled to a liquid hydrocarbon fuel source and an oxygen-containing gas intake fluidly coupled to an oxygen-containing gas source. The mixing zone further includes at least one atomizing nozzle and a fuel distribution zone downstream the at least on atomizing nozzle. The system also includes a catalyst reaction zone downstream the mixing zone, including a monolith block having a plurality of flow channels defined by monolith walls and a reforming catalyst coated onto the monolith walls. The atomizing nozzle generates a plurality of droplets comprising the liquid hydrocarbon fuel suspended in oxygen-containing gas. The fuel distribution zone distributes the plurality of droplets to each of the plurality of flow channels to contact the reforming catalyst including N-hydroxyphthalimide.
Method for Producing a Carbon Material, Carbon Material, and Use of a Carbon Material in a Fuel Cell
A method for producing a nitrogen-modified mesoporous and dendritic carbon material includes preparing a carbon precursor comprising a metal acetylide. The carbon precursor is mixed with a nitrogen precursor to form a starter mixture. Thereafter, a first heat treatment of the starter mixture is carried out at a temperature in the range of 40 to 80? C. under vacuum to form a metal inclusion compound. In a next step, a second heat treatment is carried out at a temperature in the range of 120 to 220? C. to produce an intermediate by decomposing the metal inclusion compound under a vacuum. The intermediate is treated to remove the metal, and finally consolidation of the treated intermediate is carried out by a third heat treatment at a temperature in the range of 200 to 1000? C. under vacuum or in an inert gas atmosphere to obtain the nitrogen-modified mesoporous and dendritic carbon material. Also described is a nitrogen-modified mesoporous and dendritic carbon material and a fuel cell comprising the carbon material.
Immobilizing metal catalysts in a porous support via additive manufacturing and chemical vapor transformation
A method of immobilizing a metal catalyst in a porous support includes additively forming a precursor structure on a substrate from a metal catalyst and at least one of a metal oxide or a metal cluster compound; exposing the precursor structure to a vapor of an organic linker; and reacting the at least one of the metal oxide or the metal cluster compound in the precursor structure with the organic linker to form a porous support that immobilizes the metal catalyst.
CATALYST AND ITS USE FOR THE SELECTIVE HYDRODESULFURIZATION OF AN OLEFIN CONTAINING HYDROCARBON FEEDSTOCK
A catalyst and its use for selectively desulfurizing sulfur compounds present in an olefin-containing hydrocarbon feedstock to very low levels with minimal hydrogenation of olefins. The catalyst comprises an inorganic oxide substrate containing a nickel compound, a molybdenum compound and optionally a phosphorus compound, that is overlaid with a molybdenum compound and a cobalt compound. The catalyst is further characterized as having a bimodal pore size distribution with a large portion of its total pore volume contained in pores having a diameter less than 250 angstroms and in pores having a diameter greater than 1000 angstroms.
Exhaust gas purification catalyst
The present invention provides an exhaust gas purification catalyst provided with: a substrate of wall flow structure in which inlet cells and outlet cells are partitioned by porous partition walls; and a catalyst layer disposed at least inside the partition wall and including a catalyst body. The catalyst layer satisfies the following conditions: (1) the pore volume of pores no larger than 5 m, as measured in accordance with a mercury intrusion technique, is 24000 mm.sup.3 or greater per L of volume of the substrate; and (2) a permeability coefficient measured by a Perm porometer is 0.6 m.sup.2 to 4.4 m.sup.2.
Gas-phase and liquid-gas-phase nitrilation process
A process for the nitrilation of a fatty acid or of a fatty acid ester, which is optionally unsaturated, by reacting the fatty acid or fatty acid ester with ammonia in a reactor operating continuously in the gas phase or in the mixed gas-liquid phase in a temperature range of from 180 to 400 C., in the presence of a solid catalyst comprising at least one metal oxide, the metal of which belongs to column 8 of the periodic table, as a mixture with at least one metal oxide chosen from aluminum oxides, zirconium oxides, niobium oxides, tantalum oxides and tin oxides, the metal oxide(s), the metal of which belongs to column 8, being present in a volume ratio of 0.1 to 0.6 relative to the volume of the mixture of all the oxides.
Porous material and devices for performing separations, filtrations, and catalysis and EK pumps, and methods of making and using the same
Embodiments of the present invention are directed to a porous monolith polymeric composition having utility in catalysis, chromatography, filtration, and electro-kinetic pumps, devices incorporating such composition and methods or making and using such monoliths. The monoliths are characterized by a substantially homogeneous skeletal core with little shrinkage, few voids and few channels.
Catalyst support and method for producing porous graphitized carbon material covered with metal nanoparticles
A known method for producing porous graphitized carbon material covered with metal nanoparticles involves infiltrating a porous template framework of inorganic material with a carbon precursor. After thermal treatment of the precursor, the template is removed and the particulate porous carbon material is covered with a catalytically active substance. According to the invention, in order to keep the proportion of the noble metal loading at a low level, the thermal treatment of the precursor first involves carbonization, and the material is not graphitized into graphitized, particulate, porous carbon material until the template has been removed. The graphitized carbon material has a hierarchical pore structure with a pore volume of at least 0.5 cm.sup.3/g and at least 75% of the pore volume is apportioned to macropores with, size 100 to 5000 nm. Before covering with catalytically active substance, the carbon material is subjected to an activation treatment in an oxidizing atmosphere.
Metallo-silicate catalyst (MSC) compositions, methods of preparation and methods of use in partial upgrading of hydrocarbon feedstocks
The invention relates to the preparation of novel bi- or tri metallic silicate micro-porous and/or meso-porous materials based on cerium, nickel, copper and/or zinc on a porous silicate framework matrix to use its molecular sieve effect to target preferentially the acidic organic molecules present in hydrocarbon feedstocks like crude oil, bitumen, VGO and the like. The chosen metals are selected based on their ability to activate steam and transfer oxygen for completing the oxidation of carboxylic compounds or decarboxylating them. These composite materials can be prepared under hydrothermal synthesis conditions in order to produce suitable porous solids where the metals are well dispersed and preferentially distributed inside the channels of the silicate framework where they can interact only with the molecules that can go inside the channels. According to the invention, the metallo-silicate materials are prepared under hydrothermal synthesis conditions Modification of the physical-chemical properties of the porous silicate materials can be accomplished by partial replacement of the silicon atoms by cerium, nickel, copper and/or zinc atoms in the material by isomorphous substitutions of these elements in a synthesis gel or by post-synthesis modifications like ion-exchange or impregnation/deposition. The materials can be used as prepared catalysts for the steam catalytic reduction of the total acid number (TAN) in acidic crude oil feedstocks and in the presence of steam and/or CO.sub.2 as oxidizing agent to complete decarboxylation and to keep the metal oxide active sites from reducing and deactivating as well as other partial upgrading reactions.
Metallo-silicate catalyst (MSC) compositions, methods of preparation and methods of use in partial upgrading of hydrocarbon feedstocks
The invention relates to the preparation of novel bi- or tri-metallic silicate micro-porous and/or meso-porous materials based on cerium, nickel, copper and/or zinc on a porous silicate framework matrix to use its molecular sieve effect to target preferentially the acidic organic molecules present in hydrocarbon feedstocks like crude oil, bitumen, VGO and the like. The chosen metals are selected based on their ability to activate steam and transfer oxygen for completing the oxidation of carboxylic compounds or decarboxylating them. These composite materials can be prepared under hydrothermal synthesis conditions in order to produce suitable porous solids where the metals are well dispersed and preferentially distributed inside the channels of the silicate framework where they can interact only with the molecules that can go inside the channels. According to the invention, the metallo-silicate materials are prepared under hydrothermal synthesis conditions Modification of the physical-chemical properties of the porous silicate materials can be accomplished by partial replacement of the silicon atoms by cerium, nickel, copper and/or zinc atoms in the material by isomorphous substitutions of these elements in a synthesis gel or by post-synthesis modifications like ion-exchange or impregnation/deposition. The materials can be used as prepared catalysts for the steam catalytic reduction of the total acid number (TAN) in acidic crude oil feedstocks and in the presence of steam and/or CO.sub.2 as oxidizing agent to complete decarboxylation and to keep the metal oxide active sites from reducing and deactivating as well as other partial upgrading reactions.