The invention relates to inorganic clay composite and the method for preparation and the utility, belonging to the catalyst art. The material comprises rare-earth element,
titanium oxide and clay, the rare-earth element being one or two from Ce, La, Nd, Pr, Yt, Eu and Er, the clay being
montmorillonite, the
mass ratio of every component being:
montmorillonite 54- 90%,
titanium oxide 8- 45%, and rare-earth
oxide 0.1- 4.0%; and the technique contains the following steps: the
mass ratio of material being:
titanate 0.6- 1.8%, absolute ethyl
alcohol 45- 90%, rare-earth salt 0.013- 0.08% clay 0.8- 1.8%, deionized water 3- 30% and glycerin 4- 35%, using
titanate, absolute ethyl
alcohol and glycerin solution to prepare
titanium oxide
sol, using rare-earth salt and absolute ethyl
alcohol to prepare rare-earth solution, adding said
sol and solution separately into the suspension of clay- absolute alcohol, mixing, aging, filter-pressing,
drying in 60- 80Deg. C, and at last
roasting 4- 10 hours to prepare the product. The material is added into
coating as an additive. And the material has a high
catalysis property and a short preparation process.