SYNTHESIS AND PROPERTIES OF SAPO-37

被引：22

作者：

OJO, AF ^{[1
]}

DWYER, J ^{[1
]}

DEWING, J ^{[1
]}

KARIM, K ^{[1
]}

机构：

[1] UNIV MANCHESTER,INST SCI & TECHNOL,DEPT CHEM,POB 88,MANCHESTER M60 1QD,LANCS,ENGLAND

来源：

JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS | 1991年 / 87卷 / 16期

关键词：

D O I：

10.1039/ft9918702679

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 synthesis of silicoaluminophosphate SAPO-37 which has the faujasite structure type is described. The SAPO-37 product is extensively characterized by X-ray powder diffraction (XRD), chemical analysis, scanning electron microscopy (SEM), thermogravimetric analysis (TG) and Guinier-Lenne photographs. Direct comparison between SAPO-37 and zeolite Y is drawn from Fourier-transform infrared spectroscopy of both the framework and of sorbed pyridine, and also from oxygen adsorption studies. Aging of the synthesis gel appears to aid the crystallization of pure materials, whilst long synthesis times lead to co-crystallization with SAPO-5 and/or SAPO-40. The incorporation of silicon into the framework of SAPO-37 is demonstrated by Al-27, P-31 and Si-29 magic-angle spinning magnetic resonance (MAS NMR). Preliminary results for a comparison of H-SAPO-37 and H-Y in omicron-xylene isomerization are discussed.

引用

页码：2679 / 2684

页数：6