Preparation method of ATP/ Ce-Ti sold soluble oxide composite material

Abstract

The invention relates to a preparation method of an ATP (attapulgite)/ Ce-Ti (cerium-titanium ) sold soluble oxide composite material, and belongs to the technical field of finish machining of nonmetallic minerals and the inorganic chemical industry. The preparation method of the ATP/Ce-Ti sold soluble oxide composite material comprises the steps that a proper amount of cerium salt and titanium alkoxide at a molar ratio of 9:1 to 3:7 are solved in anhydrous ethanol and evenly mixed with the anhydrous ethanol to serve as a component A; a proper amount of ethanol, deionized water and glacial acetic acid are additionally taken and mixed to serve a component B; the component B is dropwise added to the component A under a continuous stirring condition, the pH (potential of hydrogen) value A is regulate to 2 to 4 by using nitric acid, and the ATP is added to an obtained solution and continuously stirred for 24 hours; and an obtained mixture is placed in a thermostat to be aged for several days to form xerogel, and after the xerogel is calcined, the ATP/Ce-Ti sold soluble oxide composite material is obtained. The method is simple to operate, requires a low cost and facilitates the realization of large-scale industrial production; and prepared ATP/CeO2-TiO2 is evenly loaded, has good dispersity and has very high industrial application value.

Description

technical field [0001] The invention relates to the technical fields of non-metallic mineral finishing and inorganic chemical industry, in particular to a preparation method of attapulgite / cerium-titanium solid solution oxide nanocomposite material. Background technique [0002] With the rapid development of industry, the problem of water pollution is becoming more and more prominent. Dye wastewater is one of the main sources of industrial pollution. Dye wastewater contains a large amount of refractory organic matter, with high chroma and high toxicity, which is the difficulty of industrial pollution control. [0003] Rare earth cerium oxide is a cheap and versatile new multifunctional material with unique cubic fluorite structure, high oxygen storage / release capacity and oxidation / reduction performance (Ce 3+ / C 4+ ), which are widely used in the field of catalysis for three-way catalytic conversion of automobile exhaust, catalytic hydrogenation, and catalytic purification...

AI Technical Summary

Problems solved by technology

[0004] In the actual catalytic degradation process, the catalyst powder itself has the problem of being difficult to separate and recycle, which restricts the practical application and further promotion of the catalyst. Loading it on a carrier material that is easy to recycle is the current solution to the dispersion and duplication of the catalyst. One of the main methods of utilization; attapulgite (ATP) is a low-cost natural mineral, which has a one-dimensional layer chain nanopore structure on the microscopic level, and water molecules and organic molecules of a certain size can be directly adsorbed in its pores. In the channel, macroscopically, it shows a large specific surface area and strong adsorption and ion exchange performance. Therefore, attapulgite can be used as an excellent catalyst carrier material; Chinese patent 200810019827.1 discloses a method for attapulgite to support nano-cerium oxide , which is characterized in that the uniform precipitation method is used to prepare the material with uniform and well-dispersed nano-scale cerium oxide particles on the attapulgite; but so far, there is no research on the preparation and application of attapulgite-loaded cerium-titanium solid solution oxides. to report

Images