Methods for exchanging interlayer anions in layered double hydroxides

摘要

The present invention relates to a method for exchanging an interlayer anion of a layered double hydroxide (LDH) with another anion whose affinity for LDH is lower than one of the starting interlayer anions, the method comprising: 1) a step of exchanging an interlayer anion at the beginning of a layered double hydroxide with a polyoxometalate anion to obtain a layered double hydroxide with a polyoxometalate anion as an interlayer anion; and (2) an interlayer anion. In order to obtain a layered double hydroxide with other anions, the polyoxometalate anion of the layered double hydroxide obtained in step (1) is selected from among the interlayer anions whose affinity for LDH is initiated Step of exchanging with other anions lower than one of the following.