Abstract:
A process for at least partially reactivating the catalytic activity of at least a partially deactivated catalyst following a reaction cycle, the catalyst having been used in a catalytic reaction process for hydrogenating an aromatic epoxide to produce a hydrogenated aliphatic epoxide; said process including contacting the at least partially deactivated catalyst with an oxygen-containing source at a temperature of less than about 100° C. and in the presence of a reactivation solvent for a pre-determined period of time sufficient to at least partially re-oxidize and reactivate the catalyst for further use; and a catalytic reaction process for hydrogenating an aromatic epoxide to produce a hydrogenated aliphatic epoxide including the above reactivating process step; and optionally including a step for washing the deactivated catalyst with a solvent prior to re-oxidizing the deactivated catalyst.
Abstract:
The invention relates to a method for producing activated carbon provided and/or impregnated with a metal-organic framework substance (MOF material), the activated carbon being in particular in the form of discrete activated carbon particles, and preferably for producing an activated carbon with a reactive and/or catalytic action. The metal-organic framework substance is produced in situ in the pores and/or in the pore system of the activated carbon, starting from at least one metal precursor compound (MP) containing a metal and at least one ligand precursor (LP).
Abstract:
Supported catalysts having an atomic level single atom structure are provided such that substantially all the catalyst is available for catalytic function. Processes of forming a catalyst unto a porous catalyst support is also provided.
Abstract:
A wash coat is formed by combining platinum group metals (PGM) and an adhesive with a mixture of catalyst support materials according to the relationship (α)RE-Ce—ZrO2+(β)CZMLA+(1−α−β)RE-Al2O3. The RE-Ce—ZrO2 is a commercial material of rare earth elements stabilized ceria zirconia having a weight ratio (α) ranging from 0 to about 0.7; CZMLA is a catalyst support material comprising a core support powder coated with a solid solution and has a weight ratio (β) ranging from about 0.2 to about 1 such that (α+β)≦1. RE-Al2O3 is rare earth element stabilized alumina having a weight ratio equal to (1−α−β). The wash coat exhibits a lower activation temperature compared with traditional wash coat formulations by at least 50° C. This wash coat also requires less RE-Ce—ZrO2 oxide and/or less PGM in the formulation for use as an emission control catalyst for gasoline and diesel engines.
Abstract:
This disclosure relates to porous carbon and a method of preparing the same. The porous carbon of the present invention is derived from a carbonitride compound having a composition comprising metal and nitrogen. The porous carbon of the present invention comprises both micropores and mesopores, and has a large specific surface area, and thus, may be usefully used in various fields.
Abstract:
Methods of preparing organosilica materials, which are a polymer comprising of at least one independent cyclic polyurea monomer of Formula wherein each R1 is a Z1OZ2Z3SiZ4 group, wherein each Z1 represents a hydrogen atom, a C1-C4 alkyl group, or a bond to a silicon atom of another monomer unit; each Z2 and Z3 independently represent a hydroxyl group, a C1-C4 alkyl group, a C1-C4 alkoxy group or an oxygen atom bonded to a silicon atom of another monomer unit; and each Z4 represents a C1-C8 alkylene group bonded to a nitrogen atom of the cyclic polyurea are provided herein. Methods of preparing and processes of using the organosilica materials, e.g., for gas separation, color removal, etc., are also provided herein.
Abstract translation:制备有机二氧化硅材料的方法,其为包含至少一种式的独立的环状聚脲单体的聚合物,其中每个R 1为Z 1 O z 2 Z 3 SiZ 4基团,其中每个Z 1表示氢原子,C 1 -C 4烷基或与硅的键 另一单体单元的原子; Z2和Z3独立地表示与另一个单体单元的硅原子键合的羟基,C1-C4烷基,C1-C4烷氧基或氧原子; 并且各Z4表示与环状聚脲的氮原子键合的C1-C8亚烷基。 本文还提供了使用有机硅材料的方法,例如用于气体分离,除色等。
Abstract:
Organosilica materials, which are a polymer of at least one independent monomer of Formula [Z1OZ2SiCH2]3 (I), wherein each Z1 represents a hydrogen atom, a C1-C4 alkyl group or a bond to a silicon atom of another monomer and each Z2 represents a hydroxyl group, a C1-C4 alkoxy group, a C1-C6 alkyl group or an oxygen atom bonded to a silicon atom of another monomer and at least one other monomer are provided herein. Processes of using the organosilica materials, e.g., gas separation, etc., are also provided herein.
Abstract:
There is disclosed a honeycomb structure usable as a support of a honeycomb catalyst onto which a large amount of catalyst can be loaded and which has a good purification efficiency, and the honeycomb structure includes porous partition walls 5 defining a plurality of cells to form through channels of a fluid and having a plurality of pores 10 therein, wherein a porosity of the partition walls 5 is from 45 to 70%, and in a cross section perpendicular to an extending direction of the cells, a total area of macro pores 12 having the largest pore diameter of larger than 10 μm is 50% or more with respect to a total area of the pores 10.
Abstract:
A method of preparing a porous graphene oxide material. The method includes the steps of: (1) preparing graphene oxide sheets from graphite at 40 to 170° C.; (2) providing a graphene oxide suspension containing the graphene oxide sheets; (3) heating the graphene oxide suspension with a base at 25 to 300° C. for 0.1 to 48 hours to obtain base-treated graphene oxide sheets; and (4) heating a mixture of the base-treated graphene oxide sheets and an acid at 25 to 300° C. for 0.1 to 48 hours to yield the porous graphene oxide material. Also disclosed are novel porous graphene oxide materials and methods of using these materials as catalysts.
Abstract:
The present invention relates to a composite body in which first metal-containing particles and second metal-containing particles are supported on a carbon material or connected by a carbon material, and a method for producing the same. The above composite body can, if the first metal-containing particles exhibit a catalytic activity, be applied as a reaction catalyst and can also be used in various fields such as the manufacture of the adsorbent or the separation membrane.