Synthesis and Characterization of Extra-large 18-Ring Zeolite ITQ-33 Using Phosphonium as Structure-directing Agent

doi:10.7503/cjcu20120503

Abstract

Abstract:

Extra-large pore zeolite ITQ-33 with 18-rings was prepared using tetrabutylphosphonium hydroxide as structure-directing agent. In situ temperature dependent XRD analysis showed that the framework structure of the as-synthesized product maintains up to 400℃. Its adsorption character was confirmed by N₂ adsorption. The influence of synthetic factors in the synthesis of ITQ-33 was studied. The tetrahedrally coordinated Al atoms in the framework lead to the Lewis acid sites.

Key words: Zeolite ITQ-33, Hydrothermal synthesis, Extra-large pore zeolite, Tetrabutyl phosphonium hydroxide

CLC Number:

O611

TrendMD:

QIAN Kun, SONG Xiao-Wei, XU Da, LI Ji-Yang. Synthesis and Characterization of Extra-large 18-Ring Zeolite ITQ-33 Using Phosphonium as Structure-directing Agent[J]. Chem. J. Chinese Universities, 2012, 33(10): 2141.

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Synthesis and Characterization of Extra-large 18-Ring Zeolite ITQ-33 Using Phosphonium as Structure-directing Agent

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