Premium
Synthesis and Characterization of the All‐Silica Pure Polymorph C and an Enriched Polymorph B Intergrowth of Zeolite Beta
Author(s) -
Cantín Ángel,
Corma Avelino,
DíazCabañas María J.,
Jordá Jose L.,
Moliner Manuel,
Rey Fernando
Publication year - 2006
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200603027
Subject(s) - zeolite , cationic polymerization , crystallization , crystallography , chemistry , silicon , ion , chemical engineering , beta (programming language) , characterization (materials science) , materials science , organic chemistry , nanotechnology , catalysis , computer science , engineering , programming language
Previously elusive , the all‐silica pure polymorph C of zeolite beta and a material enriched with polymorph B (see picture) are prepared by high‐throughput (HT) synthesis in the presence of a cationic organic structure‐directing agent (SDA). The presence of K + ions is essential for the formation of these materials; furthermore, a high ratio of OH − ions to silicon atoms favors the crystallization of polymorph C.