title: Post-synthesis treatment gives highly stable siliceous zeolites through the isomorphous substitution of silicon for germanium in germanosilicates.
abstract: Germanosilicates, an important family of zeolites with increasing number of members and attractive porosities, but containing a large quantity of unstable Ge atoms in the framework, meet with great obstacles in terms of limited thermal and hydrothermal stability when it comes to practical use. A facile stabilization method thus has been developed to substitute isomorphously Ge atoms for Si atoms, giving rise to ultrastable siliceous analogues of the pristine germanosilicates.
authors.affiliation: Shanghai Key Laboratory of Green Chemistry and Chemical Process, Department of Chemistry, East China Normal University, North Zhongshan Rd. 3663, Shanghai 200062 (China).
authors.forename: Hao
authors.initials: H
authors.lastname: Xu
authors.forename: Jin-Gang
authors.initials: JG
authors.lastname: Jiang
authors.forename: Boting
authors.initials: B
authors.lastname: Yang
authors.forename: Lin
authors.initials: L
authors.lastname: Zhang
authors.forename: Mingyuan
authors.initials: M
authors.lastname: He
authors.forename: Peng
authors.initials: P
authors.lastname: Wu
keywords: acid treatment; double 4-ring; germanium; post-synthesis treatment; zeolites