Patent classifications
B01J2235/00
Catalysis by metal nanoparticles dispersed within a hierarchically porous carbon material
Disclosed are hierarchically porous carbon materials with a plurality of discreet nanoparticles dispersed on their carbon phase. The materials possess a continuous network of pores that spans the porous material, permitting the flow of fluids into and through the material. The porous materials can be used as heterogeneous catalysts.
Catalyst for selective hydrogenation of dienes, preparation method and application thereof
A mixed metal oxide catalyst for selective hydrogenation of dienes comprising a Group VIII metal, a trivalent metal, a Group IA metal, a Group IVB metal, a Group IIB metal, two Group VIB metals and SiO.sub.2Al.sub.2O.sub.3 as balance. The catalyst comprises 10-40 wt % of Group VIII metal, 5-30 wt % of trivalent metal, 0.1-8 wt % of Group IA metal, 0.1-8 wt % of Group IVB metal, 0.1-30 wt % of Group IIB metal, 5-50 wt % of two Group VIB metals and 10-30 wt % of SiO.sub.2Al.sub.2O.sub.3, based on the catalyst in terms of oxide, and has 150-300 m.sup.2/g of specific surface area, 0.4-0.8 ml/g of pore volume.
Methods for treating sepsis
Methods for treating sepsis are provided and include the administration an effective amount of cerium oxide nanoparticles to a subject in need thereof. The sepsis being treated can include polymicrobial sepsis and can include the administration of about 0.1 mg/kg to about 1.0 mg/kg of the cerium oxide nanoparticles. The administration of the cerium oxide nanoparticles further allows one or more of the symptoms of sepsis to be treated. Methods of treating an inflammatory disorder that make use of cerium oxide nanoparticles are further provided.
PRODUCTION METHOD OF OXYGEN STORAGE MATERIAL, AND OXYGEN STORAGE MATERIAL
A production method comprising: adding a hydroxycarboxylic acid to an aqueous solution containing a Ce salt, a Zr salt, an Al salt, and at least one selected from a La salt, an Mg salt, and a Ca salt, to produce a gel, heating the gel to obtain a solid product by decomposition of the salts, firing the solid product to obtain a fired product containing a ceria-zirconia-based regular array phase precursor and an aluminate-based composite oxide precursor, performing a reducing heat treatment of the fired product to obtain a first composite having mutually dispersed therein a pyrochlore phase and an aluminate-based composite oxide, and performing an oxidizing heat treatment of the first composite to obtain a second composite in which at least part of the pyrochlore phase is transformed into a phase; and an oxygen storage material having mutually dispersed therein the composite oxide and the regular array phase.
METHOD FOR PREPARING SHAPED POROUS INORGANIC MATERIALS, BY REACTIVE EXTRUSION
A method for preparing a porous inorganic material by at least: a) reaction of a mixture of one precursor of the oxide of a metal X in solution and a precursor of the oxide of a metal Y at a temperature of between 30 and 70 C., X and Y being, independently aluminum, cobalt, indium, molybdenum, nickel, silicon, titanium, zirconium, zinc, iron, copper, manganese, gallium, germanium, phosphorus, boron, vanadium, tin, lead, hafnium, niobium, yttrium, cerium, gadolinium, tantalum, tungsten, antimony, europium or neodymium; b) mixing of the mixture obtained at the end of a) at a temperature of between 80 and 150 C., the mixing period being adjusted so as to obtain a paste that exhibits a fire loss of between 20% by weight and 90% by weight; c) shaping of the porous inorganic material;
a) to c) being performed within an extruder.
MOLYBDENUM-VANADIUM-BERYLLIUM-BASED OXIDATIVE DEHYDROGENATION CATALYST MATERIALS
This document relates to oxidative dehydrogenation catalyst materials that include molybdenum, vanadium, beryllium, oxygen, and optionally aluminum.
PROCESS FOR PRODUCING AN ORGANIC ACID, AND CATALYST FOR SAME
Provided herein is a process for producing a compound of formula (I), or a salt thereof: (I) catalyst. Also provided herein are catalysts which find use in the process.
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FISCHER TROPSCH CATALYST SYSTEM
A novel Fischer Tropsch (FT) catalyst that has improved thermal characteristics and a highly active surface catalyst coating on a pellet to produce high quality hydrocarbon liquids and waxes even at high reactor temperatures. The catalyst shows a surprising increase in hydrocarbons and wax formation at high temperature and a much higher specific catalyst activity than demonstrated to date. More generally, a catalyst support, method of making a catalyst, and methods of FT synthesis are described.
MANGANESE TITANATE-CONTAINING FISCHER-TROPSCH CATALYST AND METHODS FOR MAKING AND USING SAME
The present disclosure relates generally to titania-supported Fischer-Tropsch catalysts incorporating manganese titanate, methods of making and use thereof. In one aspect, the present disclosure provides a titania-supported Fischer-Tropsch catalyst precursor comprising a titania support, and disposed on the titania support, manganese in the range of 1 wt % to 20 wt %, calculated as manganese (0); wherein at least 10 at % of the manganese is in the form of MnTiO.sub.3.
CATALYST COMPRISING A SUPPORT BASED ON SILICO-ALUMINIC MATRIX AND ON ZEOLITE, PREPARATION THEREOF AND PROCESS FOR HYDROCRACKING HYDROCARBON FEEDSTOCKS
The invention describes a catalyst comprising at least one hydro/dehydrogenating element chosen from the group formed by the elements from group VIB and from group VIII of the periodic table, alone or as a mixture, and a support comprising at least one zeolite and one amorphous silica-alumina, wherein the zeolite has an acid site distribution index (ASDI) of greater than 0.15 and a density of acid sites (determined by H/D exchange) of between 0.05 and 1 mmol/g, and wherein the support has a pore volume, measured by nitrogen porosimetry, developed within the pores with a diameter of between 6 nm and 11 nm, of less than 0.5 ml/g, a grain density, measured by mercury displacement under a pressure of 0.003 MPa, of greater than 0.93 g/ml, and a tapped packing density (TPD) of greater than 0.5 g/ml and less than 0.65 g/ml. A further subject of the present invention relates to the process for preparing said catalyst, comprising at least one step of preparing a silica-alumina gel by mixing a silica precursor with a specific alumina precursor, and to a process for hydrocracking a hydrocarbon feedstock in the presence of said catalyst.