The invention relates to a preparation method of a catalyst, in particular to a preparation method of a load-type metallic oxide ozone catalytic oxidation catalyst, which is characterized by comprising the following steps of (1) selecting ceramic filter bulbs to serve as a carrier, washing through deionized water, soaking for 24h by using diluted hydrochloric acid, and washing through the deionized water to effluent neuter for stoving; (2) dipping for 24h in nickel nitrate solution with the concentration of 0.1-1.0mol/L and drying; (3) roasting for 5h in a muffle furnace at 500 DEG C to obtain roasting objects; and (4) washing through the deionized water and stoving to obtain the load-type metallic oxide ozone catalytic oxidation catalyst. The preparation method is simple, low in cost, capable of greatly improving oxidation rate and efficiency of ozone on organic pollutant, good in product stability and capable of repeatedly using, and having important significant on application and dissemination of catalytic ozonation techniques.

Preparation method of load-type metallic oxide ozone catalytic oxidation catalyst

The invention belongs to the field of environmental protection and discloses an innocent treatment method for sulfur-bearing VOC. The innocent treatment method comprises the following steps: (1) a catalyst is placed in a combustion furnace of a sulfur-bearing VOC combustion treatment device, and a sulfur-bearing VOC gas and a combustion supporting gas are pumped into the combustion furnace; and (2) the sulfur-bearing VOC gas and the combustion supporting gas which are mixed are subjected to catalytic combustion under the action of the catalyst of the catalytic combustion furnace, and a gas obtained after combustion is finally absorbed by an alkaline substance, wherein the catalyst in the step (1) is a main catalyst, or the main catalyst and a promoter, or the main catalyst and a carrier, or the main catalyst, the promoter and the carrier. The innocent treatment method is simple and efficient; and the used catalyst can increase the local concentrations of the sulfur-bearing VOC gas and the combustion supporting gas and can also weaken the chemical bond energy to improve the reaction activity, so that catalytic combustion of the sulfur-bearing VOC can be carried out more easily, the reaction is more thorough, and harmless treatment of the sulfur-bearing VOC is effectively realized.

Innocent treatment method for sulfur-bearing VOC

The invention discloses a catalyst used for purifying a volatile organic compound and a preparation method of the catalyst. According to the catalyst, aluminum oxide modified by iron, cobalt and nickel serves as a carrier, cordierite honeycomb ceramic serves as a substrate, and a mixture of platinum in a very low content and palladium serves as an active component, wherein the molar ratio of the platinum to the palladium is (0-1):(0-9), the mixture of the platinum and the palladium accounts for 0.01-0.05% of the substrate by mass, and the mass of the carrier is 3-5% of the mass of the substrate. The preparation method comprises the steps that firstly, the carrier is coated; secondly, discharge enhancing pretreatment is conducted; thirdly, an active component impregnation liquid is prepared; fourthly, the active component is subjected to support and reduction. By means of the method, the defects that an existing catalyst used for purifying the volatile organic compound is too complex in modification, tedious in preparation technology process and high in noble metal supported content, and accordingly the cost is high are overcome, and the catalyst prepared by using the method is good in low-temperature activity and excellent in high-temperature resistance.

Catalyst used for purifying volatile organic compound and preparation method of catalyst

The invention discloses a honeycomb-shaped integral catalyst and a preparation method thereof The honeycomb-shaped integral catalyst is prepared by using honeycomb ceramic as a carrier, and using copper manganese cerium compound oxide loaded on the honeycomb ceramic carrier as a catalyst active component, wherein the weight percentage of the copper manganese cerium compound oxide is 15 to 30%, and the weight percentage of the honeycomb ceramic carrier is 70 to 85%; in the copper manganese cerium compound oxide, the weight percentage of copper oxide is 4% to 6%, the weight percentage of manganese oxide is 5% to 10%, and the weight percentage of cerium oxide is 6% to 14% The honeycomb-shaped integral catalyst has the advantages that the integral honeycomb ceramic is used as the carrier, the non-noble metals, such as copper, manganese and rare metal cerium, are used as the catalyst active components, and the special technology is adopted; the specific surface area is large, the low-temperature activity is high, the purifying rate is high, the cost is greatly reduced, and the scaled production and industrialization of the catalyst are easily realized

Honeycomb-shaped integral catalyst and preparation method thereof

The invention belongs to the technical field of exhaust gas purification treatment and particularly relates to an exhaust gas purification method based on a ROC technology The exhaust gas purification method solves the problem that the prior art utilizes a large amount of a catalyst, has low catalytic efficiency, high energy consumption, low purification efficiency and unstable treatment effect and can produce NOX secondary pollutants in treatment The exhaust gas purification method comprises carrying out preliminary filtration on exhaust gas, feeding the exhaust gas into an active carbon adsorption bed with active carbon, carrying out purification treatment, discharging the exhaust gas satisfying the discharge standards, desorbing organic matters in the active carbon reaching to saturation adsorption through hot air, heating the desorbed gas, feeding the desorbed gas into a catalyst layer filled with a catalyst, carrying out purification, feeding the purified gas into a thermal storage ceramic packed bed, carrying out cooling and then carrying out discharge The exhaust gas purification method has the characteristics of simple operation, low treatment temperature, small catalyst use amount, high catalytic efficiency, low energy consumption, high purification efficiency, stable treatment effect and no NOX secondary pollutant in treatment and is worthy of promotion

Exhaust gas purification method based on ROC technology

The invention provides a noble metal monolithic catalyst for purifying organic waste gas and a preparation method thereof. The catalyst is a noble metal monolithic catalyst which uses cordierite ceramic pretreated by dilute nitric acid as a carrier and is loaded with zirconium-manganese mixed oxide serving as a first coating layer and a noble metal palladium active ingredient serving as a second coating layer. The method for preparing the catalyst comprises the following steps of: acidifying the carrier by adopting the dilute nitric acid to increase the specific surface area and the surface coarseness of the carrier, soaking and roasting a precursor loaded with zirconium and manganese serving as the first coating layer, and soaking a precursor loaded with noble metal palladium serving as the second coating layer of the main active ingredient. The catalyst has uniformly-loaded active ingredients, high catalytic performance, little using amount and low cost of noble metal, easy popularization, high catalytic combustion removal efficiency of triphenyl, polycyclic aromatic hydrocarbon and other organic waste gas and low ignition temperature and can be widely applied to the purification treatment of industrial organic waste gas.

Noble metal monolithic catalyst for purifying organic waste gas and preparation method thereof

The invention discloses an integral type catalyst with heat storage function as well as a preparation method and application thereof. The integral type catalyst is loaded with an activated alumina and catalyst active ingredients on the surface of a heat storage layer, and has an integral porous cellular structure; the heat storage layer consists of at least one of SiC and corundum, dichroite and mullite; the catalyst active ingredients mainly comprise CuO, CoO, Ni2O3 and MnO2, and can be added with Pt, Pd or mixture of the both; and the activated alumina accounts for 2 to 20 percent of the mass of the integral type catalyst. The preparation method comprises the following steps: firstly, preparing the activated alumina and the catalyst active ingredients into coating slurry; and then soaking the heat storage layer into the coating slurry to prepare the integral type catalyst with the heat storage function. The catalyst has the thermal efficiency reaching 96 percent, and can realize high-efficiency purification on industrial organic waste gases after integrating with a reverse flow reactor for catalytic combustion of contaminants under non-steady operation conditions.

Bichun Huang

Papers

Noble metal monolithic catalyst for purifying organic waste gas and preparation method thereof

Integral type catalyst with heat storage function as well as preparation method and application thereof