Studies on the New Route to Synthesize Microporous AIPO4-CJ2

Abstract

Abstract:

By using phosphorous acid in place of phosphoric acid as the source of P. microporous aluminophosphate AIPO₄-CJ₂ has been first hydrothermally synthesized without the presence of organic template molecules. The single crystal of the compound has also been prepared. Structure refinement from single crystal x-ray diffraction has shown that the aluminophosphate prepared by new route,crystalline in the orthorhombic space group P2₁2₁2₁ with a=0.942 l(4) nm, b=0.9589(4) nm, c=0.9.929(4) nm, corresponding with AIPO₄-CJ₂ reported by the researcher of Jilin University. By varying template, pH value as well as concentration of the starting materials, the key factor, which influence the crystallization of AIPO₄-CJ₂ were deduced In the presence of NH₄F, AIPO₄-CJ₂ can be synthesized by using either o-dipropylamine or triethylamine as template. It can even been prepared in the absence of any organic compound. The existence of NH₄F,and phosphorous acid may be the important conditions for the synthesis of AIPO₄-CJ₂.

Key words: the source of P, phosphorous acid, aluminophosphate, molecular sieve, AIPO₄-CJ₂

CLC Number:

O612

TrendMD:

LI Niu, XIANG Shou-He. Studies on the New Route to Synthesize Microporous AIPO₄-CJ₂[J]. Chem. J. Chinese Universities, 2001, 22(S1): 211.

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Studies on the New Route to Synthesize Microporous AIPO₄-CJ₂

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