Tuning the base properties of Mg–Al hydrotalcite catalysts using their memory effect

Herein, the relationship between the structure and base properties of Mg–Al hydrotalcite catalysts was comprehensively investigated in relation to heat treatment and rehydration processes, which are well known as memory effects of hydrotalcite. The structure of Mg–Al hydrotalcites changed from layered double hydroxide (LDH) to mixed metal oxide and subsequently to a spinel structure during heat treatment, and it was returned from mixed metal...