Rapid synthesis of hierarchical SSZ-13 zeolite microspheres via a fluoride-assisted in situ growth route using aluminum isopropoxide as aluminum source. Issue 6 (22nd January 2020)

• Record Type: Journal Article
• Authors: Bing, Liancheng; Liu, Jiajia; Yi, Kaifeng; Li, Fangni; Han, Dezhi; Wang, Fang; Wang, Guangjian
• Is Part Of: RSC advances. Volume 10:Issue 6(2020)
• Page Start: 3566
• Page End: 3571
• Publication Date: 2020-01-22
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c9ra08895d
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : Hierarchical SSZ-13 were quickly synthesized by adding a small quantity of hydrofluoric acid in the starting gel using aluminum isopropoxide as aluminum source. Abstract : Hierarchical SSZ-13 zeolite microspheres were quickly synthesized by adding a small quantity of hydrofluoric acid in the starting gel using aluminum isopropoxide as aluminum source. The as-synthesized hierarchical SSZ-13 crystals with high crystallinity, pore volume and external surface area were obtained within 12 h, whereas a much longer time (144 h) was necessary to synthesize a fully crystalline zeolite in a fluorine free system. The obtained hierarchical SSZ-13 catalysts showed excellent MTO performance together with considerably prolonged catalytic lifetime and improved selectivity of light olefins in comparison with the conventional microporous SSZ-13.