The synthesis and characterisation of JBW-type zeolites. Part B: Sodium/rubidium aluminogermanate, Na2Rb[Al3Ge3O12]·H2O

Autor:	P.F. Henry, M. Webster, Geoffrey M. Johnson, A.J. Genge, A. M. Healey, Mark T. Weller
Rok vydání:	2000
Předmět:	Chemistry Sodium Inorganic chemistry chemistry.chemical_element General Chemistry Crystal structure Condensed Matter Physics Molecular sieve Rubidium Crystallography Mechanics of Materials Aluminosilicate X-ray crystallography General Materials Science Zeolite Single crystal
Zdroj:	Microporous and Mesoporous Materials. 37:165-174
ISSN:	1387-1811
DOI:	10.1016/s1387-1811(99)00263-2
Popis:	An aluminogermanate possessing the zeolite JBW framework topology has been synthesized from a sodium- and rubidium-containing reagent mixture. The material, of composition Na2RbAl3Ge3O12·H2O, has been structurally characterized via single crystal X-ray diffraction, and adopts space group Pmn21 with cell parameters a=15.6241(9), b=8.2586(6), and c=5.2442(6) A. The material possesses a strictly alternating array of framework AlO4 and GeO4 tetrahedra, displaying no evidence of the superlattice observed for the aluminosilicate analogue. Sodium cations reside in the dehydrated six-rings, with rubidium cations and water molecules in the eight-rings. The structural parameters are compared with those derived for other materials possessing JBW topology.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::771261add887d9663846aab0542922ea https://doi.org/10.1016/s1387-1811(99)00263-2 Zobrazit plný text záznamu Full Text from ScienceDirect