A neutron diffraction and infrared spectroscopy study of the acid form of the aluminosilicate zeolite, chabazite (H-SSZ-13)

被引：113

作者：

Smith, LJ

Davidson, A

Cheetham, AK ^{[1
]}

机构：

[1] Univ Calif Santa Barbara, Mat Res Lab, Santa Barbara, CA 93106 USA

[2] Univ Paris 06, Lab React Surface, CNRS, URA 1106, F-75329 Paris, France

来源：

CATALYSIS LETTERS | 1997年 / 49卷 / 3-4期

关键词：

acid site; solid acid; microporous catalyst;

D O I：

10.1023/A:1019097019846

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：

A powder neutron diffraction study of the structure of D-SSZ-13 (R-3m, a = 13.6046(6), c = 14.829(1) Angstrom, R-p = 3.79%, R-wp = 4.79%, chi(2) = 2.526) reveals the presence of two distinct acid sites in the unit cell, one on the six-ring at O(2) and one in the eight-ring window at O(1). These sites are also verified by DRIFT spectroscopy, showing two distinct acid sites upon the dehydration of the zeolite.

引用

页码：143 / 146

页数：4

共 15 条

[1]

BULL LM, 1993, J CHEM SOC CHEM COMM, P1197

[2] DIRECT DETERMINATION OF PROTON POSITIONS IN D-Y AND H-Y ZEOLITE SAMPLES BY NEUTRON POWDER DIFFRACTION [J].