31 results about "Zirconium(IV) sulfate" patented technology

The invention discloses a coal bed gas deoxidation catalyst. The catalyst contains copper-loaded alumina and zirconium sulfate. The copper-loaded alumina is wrapped around zirconium sulfate. The weight ratio of the copper-loaded alumina to zirconium sulfate is is 8:1-2:1, based on the weight of aluminum oxide loaded with copper, the content of copper in terms of oxides is 5wt%-25wt%; the preparation method of the catalyst includes the following content: firstly, the copper-containing compound and The aluminum hydroxide slurry is evenly mixed, and then the mixed solution is sprayed and soaked around the zirconium sulfate, dried and roasted to obtain a coal bed gas deoxidation catalyst. The catalyst has the advantages of high activity, low reaction temperature, simple preparation method, low cost and the like when used for coal bed gas deoxidation.

The invention discloses a catalyst with a shell-core structure as well as a preparation method and an application of the catalyst. The core of the catalyst is zinc supported alumina, wherein content of alumina L acid is smaller than 0.2 mmol.g<-1>; BET specific surface area is 200-350m<2> / g; pore volume is 0.3-0.6 ml / g; the shell is alumina containing zirconium sulfate solid acid; the weight ratioof zinc supported alumina to alumina containing zirconium sulfate solid acid is 10:1-2:1; based on the weight of alumina containing zirconium sulfate solid acid as the baseline, the weight content ofzirconium sulfate solid acid is 5wt%-10wt%; based on the weight of zinc supported alumina as the baseline, content of zinc in terms of oxide is 5wt%-30wt%. The catalyst has the advantages that methane conversion rate and selectivity of halomethane as a target product are increased simultaneously, deep oxidation of halomethane is inhibited, and yield of halomethane is increased obviously.

The invention discloses a catalyst for preparation of halomethane as well as a preparation method and an application of the catalyst. The catalyst has a core-shell structure, wherein the core is zinc-containing silicon oxide, the shell is aluminum oxide containing zirconium sulfate solid acid and a molecular sieve, the molecular sieve is at least one of a 5A molecular sieve, a 13X molecular sieveand mordenite, and the weight ratio of the zinc-containing silicon oxide to the aluminum oxide containing zirconium sulfate solid acid and the molecular sieve is (10:1)-(2:1); on the basis of the weight of aluminum oxide containing zirconium sulfate solid acid and the molecular sieve, the weight content of zirconium sulfate solid acid is 5wt%-10wt%, and the content of the molecular sieve is 1wt%-10wt%; on the basis of the weight of the zinc-containing silicon oxide, the content of zinc is 5wt%-30wt% based on oxide. The catalyst can increase the conversion rate of methane and the selectivity ofthe target product halomethane, inhibit deep oxidation of halomethane and further remarkably increase the yield of halomethane.

The invention discloses a catalyst for methane oxyhalogenation as well as a preparation method and an application of the catalyst. The core of the catalyst is zinc supported alumina, wherein content of alumina L acid is smaller than 0.2 mmol.g<-1>; BET specific surface area is 200-350m<2> / g; pore volume is 0.3-0.6 ml / g; the shell is alumina containing zirconium sulfate solid acid and a molecular sieve, and the molecular sieve is at least one of a 5A molecular sieve, a 13X molecular sieve and a mordenite molecular sieve; the weight ratio of zinc supported alumina to alumina containing zirconiumsulfate solid acid and the molecular sieve is 10:1-2:1; based on the weight of alumina containing zirconium sulfate solid acid and the molecular sieve as the baseline, the weight content of zirconiumsulfate solid acid is 8wt%-15wt%, and the content of the molecular sieve is 3wt%-7wt%; based on the weight of zinc supported alumina as the baseline, content of zinc in terms of oxide is 5wt%-30wt%.The catalyst has the advantages that methane conversion rate and selectivity of halomethane as a target product are increased simultaneously, deep oxidation of halomethane is inhibited, and yield of halomethane is increased obviously.

The invention discloses a magnetic porous iron-zirconium bimetal composite coagulation aid and its preparation method and application. Zirconium sulfate and iron sulfate are dispersed in pure water, the pH is adjusted to weak alkalinity, and glacial acetic acid is added under heating conditions for reaction. Finally, a hydrated iron / zirconium oxide colloidal solution is obtained, and the hydrated iron / zirconium oxide colloidal solution is reacted under a high-pressure and high-temperature atmosphere to obtain the target product. The synthesis process of the present invention is simple, and the surface of the prepared magnetic porous iron-zirconium bimetallic composite coagulant is rich in hydroxyl groups, sulfate radical active groups and metal ion active sites, and exists in the form of colloids in water bodies, which can simultaneously realize rapid It has two functions of adsorption and rapid coagulation aid. After adding a conventional flocculant, the colloidal state will immediately change into a floc state, and finally settle down to achieve rapid separation of water and mud without causing secondary pollution to the water body. After use, the magnetic porous iron-zirconium bimetallic composite coagulant aid is soaked Magnetic recovery, drying can be recycled.

The invention provides a modified beta molecular sieve as well as a preparation method and an application thereof. The method comprises a step of performing water vapor modification treatment on a hydrogen type beta molecular sieve and a step of loading the water vapor modified hydrogen type beta molecular sieve with zirconium sulfate to obtain the modified beta molecular sieve, wherein water vapor modification treatment is performed at the temperature of 400-800 DEG C for 2-6 h; the load of zirconium sulfate is 0-50% of the mass of the water vapor modified hydrogen type beta molecular sieve.The defects that traditional ion exchange resin is difficult to regenerate, heteropolyacid and active components of a solid super acidic catalyst are easy to lose and the activity and selectivity of currently reported catalysts such as a beta molecular sieve, an HY molecular sieve and mordenite are low and the like can be overcome.

The invention provides a passivation treating agent for a chromium-plating steel part, and relates to the technical field of chemical engineering. The passivation treating agent comprises the following components in percentage by mass: 3% of potassium hydroxide, 45% of chromium nitrate, 5% of n-octanal, 4% of graphene, 20% of malonic acid, 10% of oxalic acid, 3% of silica gel-loading zirconium sulfate and the balance of tertiary butanol. The passivation treating agent provided by the invention is long in using period, does not contain hexavalent chromium and hydrogen peroxide or other strong oxidants, facilitates wastewater treatment and is an environment-friendly passivation agent. The passivation treating agent is low in concentration and production cost, relatively economic and practical and capable of improving the salt mist resistance and corrosion resistance of a metal surface and prolonging the service life of the steel part.

The invention relates to an environment-friendly and low-cost production method for industrial zirconium carbonate, and belongs to a preparation method for zirconium compounds. The method is characterized in that washing water and filtered mother liquor produced in a crude zirconium carbonate work section and a product zirconium carbonate work section are used in an alkaline zirconium sulfate worksection and replace non-ionic water to be used as basic zirconium sulfate washing water, raw material zirconium oxychloride preparation water and raw material basic zirconium sulfate slurrying waterin a crude product zirconium carbonate device. The non-ionic water consumption per ton of zirconium carbonate products is reduced to 6.8 tons or less, 89.8% or more of anhydrous sodium sulfate is saved, 32.8% or more of sodium carbonate is saved, and the consumption of the product raw materials is totally reduced by about 342 yuan / ton. Most of the zirconium carbonate washing water and filtered mother liquor discharged by the zirconium carbonate product device are recycled. Most of the non-ionic water and carried chemicals are recycled, the production cost is greatly reduced and the load of a water treatment device is alleviated.

The invention discloses a preparation method of a high-activity methane halogen oxidation catalyst. The preparation method comprises following steps: (1), aluminum oxide is subjected to co-impregnation by a mixed solution containing gallium and nickel and then is dried and subjected to high-temperature roasting treatment, and modified aluminum oxide is obtained; (2), zinc is supported to modifiedaluminum oxide prepared in the step (1), and after drying and roasting, zinc supported aluminum oxide is prepared; (3), zirconium sulfate solid acid and aluminum hydroxide slurry are mixed, and aluminum hydroxide slurry containing zirconium sulfate solid acid is obtained; (4), zinc supported aluminum oxide is subjected to spray soaking by the aluminum hydroxide slurry containing zirconium sulfatesolid acid and prepared in the step (3), and after drying and roasting, the methane halogen oxidation catalyst is prepared. According to the catalyst prepared with the method, conversion rate of methane and selectivity of a target product methyl halide can be increased simultaneously, deep oxidation of methyl halide is inhibited, and yield of methyl halide is obviously increased.

The invention discloses a catalyst for methane oxyhalogenation conversion as well as a preparation method and an application of the catalyst. The catalyst is of a core-shell structure, wherein the core is zinc-containing silicon oxide, and the shell is alumina containing zirconium sulfate solid acid; the weight ratio of zinc-containing silicon oxide to alumina containing zirconium sulfate solid acid is 10:1-2:1; based on the weight of alumina containing zirconium sulfate solid acid as the baseline, the weight content of zirconium sulfate solid acid is 5wt%-10wt%; based on the weight of zinc-containing silicon oxide as the baseline, content of zinc in terms of oxide is 5wt%-30wt%. The catalyst has the advantages that methane conversion rate and selectivity of halomethane as a target productare increased simultaneously, deep oxidation of halomethane is inhibited, and yield of halomethane is increased obviously.