AlPO-ERI, an aluminophosphate with the ERI framework topology: characterization and structure of the as-made and calcined rehydrated forms

A. Tuel (1) , C. Lorentz (1) , Volker Gramlich (2) , Christian Baerlocher (2)

1 IRC - Institut de recherches sur la catalyse
2 Laboratory of Crystallography [ETH Zürich]

An aluminophosphate with the ERI framework topol., further denoted AlPO-ERI, has been synthesized in the presence of N,N,N',N'-tetramethyl-1,6-hexanediamine and its structure was solved by single crystal X-ray diffraction. It crystallizes in the monoclinic space group P2(1) (No. 4) with a=13.163(14) .ANG., b=14.793(15) .ANG., c=13.215(14) .ANG., beta=119.74(8)°. As compared to similar materials prepd. with piperidine as template, extraframework hydroxyl groups are locally ordered in the structure. After calcination and rehydration, the aluminophosphate remains monoclinic and crystallizes in space group P2(1)/n (No. 14) with a=13.283(17) .ANG., b=14.910(14) .ANG., c=22.76(3) .ANG. and beta=90.19(10)°. Both the as made and calcined rehydrated forms of AlPO-ERI have been characterized by multidimensional solid state NMR.

Domaines: Catalyse

A. Tuel, C. Lorentz, Volker Gramlich, Christian Baerlocher. AlPO-ERI, an aluminophosphate with the ERI framework topology: characterization and structure of the as-made and calcined rehydrated forms. Comptes Rendus. Chimie, 2005, 8 (3-4), pp.531-540. ⟨10.1016/j.crci.2004.11.012⟩. ⟨hal-00012768⟩