Synthesis of Silicate Zeolite Analogues Using Organic Sulfonium Compounds as Structure‐Directing Agents. Issue 43 (21st August 2015)

• Record Type: Journal Article
• Authors: Jo, Changbum; Lee, Sungjune; Cho, Sung June; Ryoo, Ryong
• Is Part Of: Angewandte Chemie international edition. Volume 54:Issue 43(2015)
• Page Start: 12805
• Page End: 12808
• Publication Date: 2015-08-21
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1002/anie.201506678
• Languages: English
• ISSNs: 1433-7851

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>A microporous crystalline silica zeolite of the MEL structure type and three other zeolite analogues composed of germanosilicate frameworks were synthesized using tributylsulfonium, triphenylsulfonium, or tri(<italic>para</italic>‐tolyl)sulfonium as the structure‐directing agent. The germanosilicates thus obtained had ISV, ITT, or a new zeolite structure depending on the synthesis conditions. The structure of the new germanosilicate was solved using X‐ray powder diffraction data with the aid of a charge‐flipping method. The solution indicated a crystal structure belonging to the <italic>P</italic>63/<italic>mmc</italic> space group with cell parameters of <italic>a</italic>=16.2003 Å and <italic>c</italic>=21.8579 Å. After calcination, the new germanosilicate material exhibited two types of accessible micropores with diameters of 0.61 and 0.78 nm.</p> </abstract>