CRYSTALLIZATION KINETICS OF SAPO-37

被引：18

作者：

FRANCO, MJ

PEREZPARIENTE, J

MIFSUD, A

BLASCO, T

SANZ, J

机构：

[1] UNIV POLITECN VALENCIA,CSIC,INST TECNOL QUIM,CAMINO VERA S-N,E-46071 VALENCIA,SPAIN

[2] CSIC,INST CATALISIS & PETR QUIM,MADRID 6,SPAIN

[3] CSIC,INST CIENCIA MAT,MADRID 6,SPAIN

来源：

ZEOLITES | 1992年 / 12卷 / 04期

关键词：

MOLECULAR SIEVE SAPO-37; SYNTHESIS; NMR;

D O I：

10.1016/0144-2449(92)90035-N

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The crystallization kinetics of SAPO-37 have been studied for a wide range of silicon contents of the gel both in static and agitated systems. The products have been characterized by XRD, chemical and thermal analysis, scanning electron microscopy, and MAS n.m.r. A liquid-phase transportation mechanism operates during crystallization. An upper limit value of almost-equal-to 38 Si atoms per unit cell has been found. Agitation does not modify the crystallization pattern or the chemical composition of the products, but slightly favors the substitution mechanism 3. Agitation also decreases appreciably the crystallization time.

引用

页码：386 / 394

页数：9

共 19 条

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