32results about How to "Suitable pore structure" patented technology

The invention relates to a catalytic combustion catalyst for nitrogen-containing organic compound as well as a preparation method and application thereof. The catalytic combustion catalyst for the nitrogen-containing organic compound is characterized in that Al2O3 is taken as a carrier; Ir is taken as an active component; one or several of Sm, In and Sn oxides are taken as the components of an additive; on the basis of the Al2O3, the charge capacity of the active component Ir is 0.1-1wt%, and the charge capacity of the additive is 1-10wt%. The preparation method comprises the following steps: (1) dipping the carrier Al2O3 into a precursor solution of the additives, and drying and roasting to obtain an additive-carrying composite carrier Al2O3, wherein the additive is composed of one or some of Sm, In and Sn oxides; (2) dipping the composite carrier A2lO3 obtained in step (1) into a salt solution containing the active compound, and drying and roasting to obtain the catalyst, wherein the active component is Ir. The method is simple in preparation processes; the prepared catalyst is high in catalyzing combustion activity on nitrogen-containing organic waste gas, high in selectivity and high in stability, and particularly applicable to the treatment of propylene and acrylonitrile containing organic waste gas.

A sulfur-doped catalytic slurry oil-based porous carbon material and a preparation method thereof are provided, belonging to the field of comprehensive utilization of catalytic cracking slurry oil andfunctional carbon materials. The technical problem to be solved by the invention is the current problem of deep processing and utilization of catalytic slurry oil. The method comprises the steps of adding a certain volume of cyclohexane to catalytic slurry oil under the heating condition, stirring until the catalytic slurry oil is uniform, filtering under vacuum, distilling the filtrate under reduced pressure, adding a certain amount of pore-forming agent to the clarified oil, stirring uniformly under the ultrasonic heating condition, heating a heating furnace to a certain temperature under the protection of inert gas, injecting the prepared mixture into the heating furnace through an injector for pyrolysis reaction to obtain pyrolysis products, elemental sulfur and carbon disulfide, stirring for a certain time under the ultrasonic condition, filtering under vacuum, collecting insoluble matters, and drying to obtain a sulfur-doped catalytic slurry oil-based porous carbon material. Thematerial is used to alleviate the volume effect of a sulfur positive electrode.