Studies on the Synthesis of Molecular Sieves from TMAOH-P2O5-Al2O3-SiO2-H2O-HF System

Chem. J. Chinese Universities ›› 1992, Vol. 13 ›› Issue (6): 717.

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Studies on the Synthesis of Molecular Sieves from TMAOH-P₂O₅-Al₂O₃-SiO₂-H₂O-HF System

ZHAO Da-qing¹, QIU Shi-lun¹, PANG Wen-qin¹, ZHANG Jian-guo², WU Yi-jie², PEI Feng-kui²

1. Department of Chemistry, Jilin University, Changchun, 130023;
2. Changchun Institute of Applied Chemistry, Chinese Academy of Sciences

Received:1991-04-26 Online:1992-06-24 Published:1992-06-24

Abstract

Abstract: The zeolite Pcontaining phosphorus and SAPO-20 molecular sieve were synthesized by hydrothermal crystallization with H₃PO₄, boehmite and colloidal silica in the presence of HF and TMAOH as the template.The crystallization fields of the two molecular sieves were obtained by changing the contents of P, Al and Si in the reactants.The ways of heteroatom substitution were investigated by ³¹P and ²⁹Si MAS NMR technique.

Key words: Molecular sieve, Zeolite-P, SAPO-20, Hydrothermal crystallization, ¹H NMR

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ZHAO Da-qing, QIU Shi-lun, PANG Wen-qin, ZHANG Jian-guo, WU Yi-jie, PEI Feng-kui. Studies on the Synthesis of Molecular Sieves from TMAOH-P₂O₅-Al₂O₃-SiO₂-H₂O-HF System[J]. Chem. J. Chinese Universities, 1992, 13(6): 717.

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Studies on the Synthesis of Molecular Sieves from TMAOH-P₂O₅-Al₂O₃-SiO₂-H₂O-HF System

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