Fluorine-free crystallization of triclinic AlPO4-34†
Abstract
Triclinic AlPO4-34 arises from HF with fluoride ions located in the double Al–F–Al bridges. Previously, it has only been obtained in the presence of fluorine. In the present paper, a new synthetic method has been explored for the preparation of a microporous crystalline framework of triclinic AlPO4-34 avoiding the use of toxic HF acid. Fluoride-free triclinic AlPO4-34 (named as AlPO4-34FF) has been prepared by using a mixture of