AN INVESTIGATION OF BRONSTED ACIDITY IN GALLOSILICATE-MFI (GA-ZSM-5)

被引：27

作者：

CHALLONER, R

HARRIS, RK

BARRI, SAI

TAYLOR, MJ

机构：

[1] UNIV DURHAM,DEPT CHEM,SOUTH RD,DURHAM DH1 3LE,ENGLAND

[2] BP RES CTR,SUNBURY TW16 7LN,MIDDX,ENGLAND

来源：

ZEOLITES | 1991年 / 11卷 / 08期

关键词：

MAGIC-ANGLE SPINNING NMR; GALLOSILICATE-MFI; BRONSTED ACID SITE; TEMPERATURE-PROGRAMMED DESORPTION;

D O I：

10.1016/S0144-2449(05)80063-6

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 hydrogen form of gallosilicate-MFI is characterised by H-1 MAS n.m.r. in various stages of hydration. For the dehydrated sample, the chemical shift of the peak associated with Bronsted acidity is similar to that observed in the aluminosilicate analog (HZSM-5) and to higher frequency of the shift reported for the boron-containing analog. The presence of strong acid sites is independently confirmed by temperature-programmed desorption of ammonia and is also probed by C-13 CP MAS n.m.r. studies of an as-synthesized sample containing a diethanolamine template.

引用

页码：827 / 831

页数：5

共 13 条

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SCHOLLE, KFMGJ
KENTGENS, APM
VEEMAN, WS
FRENKEN, P
VANDERVELDEN, GPM
[J]. JOURNAL OF PHYSICAL CHEMISTRY, 1984, 88 (01) : 5 - 8

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