Post-Synthesis Treatment gives Highly Stable Siliceous Zeolites through the Isomorphous Substitution of Silicon for Germanium in Germanosilicates.

Xu, Hao; Jiang, Jin ‐ gang; Yang, Boting; Zhang, Lin; He, Mingyuan; Wu, Peng

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.

ZEOLITES; CHEMICAL synthesis; SILICATES; CHEMICAL stability; ISOMORPHOUS structures; SUBSTITUTION reactions; GERMANIUM compounds

Angewandte Chemie, 2014, Vol 126, Issue 5, p1379

0044-8249

Academic Journal

10.1002/ange.201306527