Method for preparing rare earth-compounded Zr cross-linked montmorillonite material

Abstract

The invention provides a process for preparing rare earth composite Zr cross-linked montmorillonite material, wherein rare-earth element-containing metallic nitrates such as cerous nitrate, lanthanum nitrate, praseodymium nitrate, zirconium chloride and montmorillonite are used as the raw materials. And the preparing process consists of Zr crosslinking and rare earth compounding. The obtained material has high specific surface area and good thermal stability.

Description

technical field [0001] The invention relates to a preparation method of a rare earth composite Zr crosslinked montmorillonite material which uses catalysis to eliminate VOCs. technical background [0002] Cross-linking clay (Cross-linking Clays, CLS) is a novel synthetic molecular sieve catalytic material. Since clay has expandability and ion exchange properties under the action of strong polar molecules, some large-volume cross-linking agents are introduced into its interlayer domains by means of ion exchange, so that they alternately form molecular-level pillars, which can be made into Novel molecular-level composite materials with regular pore size distribution and the ability to adsorb and transform organic macromolecules are expected to be widely used in the field of catalytic elimination of VOCs. The existing clay materials used for catalytic reactions are mainly composite clays prepared by adding cross-linking substances. The cross-linking substances used mainly incl...

AI Technical Summary

Problems solved by technology

Among them, the most commonly used cross-linking substance is polyhydroxy metal cation, but the clay material prepared by using this cross-linking substance has irregular pore size distribution and poor thermal stability, which limits its application.

However, doping rare earth elements in crosslinked clay to prepare rare earth composite Zr crosslinked montmorillonite materials has not been reported.