Hydrothermal synthesis and characterization of a new layered gallophosphate JGP-L1 with a Ga/P ratio of non-unity

摘要

A new compound, Ga-6(OH)(4)(HPO4)(2)(PO4)(5) . C8H28N5.3H(2)O (denoted JGP-L1), with a gallophosphate layer and a Ga/P ratio of 6,17 has been synthesized hydrothermally by using tetraethylenepentamine as template. It is characterized by powder X-ray diffraction (XRD), elemental analysis, inductively coupled plasma, and TGA analysis and structurally determined by single-crystal XRD analysis. JGP-L1 crystallizes in the orthorhombic, space group Pna2(1) (no. 33), with a = 16.422(3) b = 11.898(2), c = 18.730(4) Angstrom, V = 3659.6(13)Angstrom(3) and Z = 4. The structure of JGP-L1 is built tip by alternating of Ga(OH)(2)O-4 octahedra, Ga(OH)04 trigonal bipyramids and PO4 (or HPO4) tetrahedra to form inorganic sheets. It is noteworthy that JGP-L1 was synthesized with extremely low reactant concentration. where the reaction mixture exhibits a H2O:Ga2O3 molar ratio of 2220:1. (C) 2003 Elsevier Inc. All rights reserved. [References: 19]