Decrystallization process of HNaY zeolites upon Mechanical milling: A microcalorimetric and thermokinetic study

被引：18

作者：

Auroux, A

Huang, M

Kaliaguine, S

机构：

[1] UNIV LAVAL,DEPT GENIE CHIM,QUEBEC CITY,PQ G1K 7P4,CANADA

[2] UNIV LAVAL,CERPIC,QUEBEC CITY,PQ G1K 7P4,CANADA

来源：

LANGMUIR | 1996年 / 12卷 / 20期

关键词：

D O I：

10.1021/la960077u

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The acidity of a series of samples with different degrees of decrystallization prepared by high-energy ball milling of HNaY zeolite was studied by adsorption microcalorimetry of ammonia. Acid sites were also monitored by infrared spectroscopy using pyridine as a probe. The evaluation of the thermokinetic parameter of heat release during ammonia adsorption is a good tool to study the destruction of the crystal upon milling. Both calorimetric and infrared results suggest that the supercage structure is destroyed first during the decrystallization process of HNaY.

引用

页码：4803 / 4807

页数：5

共 15 条

[1]

[Anonymous], ACS MONOGR

[2]

Auroux A, 1994, FUND APPL C, P611

[3]

*BIOR LAB, 1986, SADTL STAND SPECTR

[4] ACID SITES IN DEHYDROXYLATED Y ZEOLITES - AN X-RAY PHOTOELECTRON AND INFRARED SPECTROSCOPIC STUDY USING PYRIDINE AS A PROBE MOLECULE [J].