MECHANOCHEMISTRY OF ZEOLITES .1. AMORPHIZATION OF ZEOLITE-A AND ZEOLITE-X AND SYNTHETIC MORDENITE BY BALL-MILLING

Authors
KOSANOVIC C BRONIC J SUBOTIC B SMIT I STUBICAR M TONEJC A YAMAMOTO T
Citation
C. Kosanovic et al., MECHANOCHEMISTRY OF ZEOLITES .1. AMORPHIZATION OF ZEOLITE-A AND ZEOLITE-X AND SYNTHETIC MORDENITE BY BALL-MILLING, Zeolites, 13(4), 1993, pp. 261-268
Citations number
44
Categorie Soggetti
Chemistry Physical
Journal title
Zeolites → ACNP
ISSN journal
01442449
Volume
13
Issue
4
Year of publication
1993
Pages
261 - 268
Database
ISI
SICI code
0144-2449(1993)13:4<261:MOZ.AO>2.0.ZU;2-Q
Abstract
X-ray diffractometry, FTi.r. analysis, cation-exchange capacity, and s olubility were used to characterize the effect of ball milling on zeol ite A, zeolite X, and synthetic mordenite. Changes of i.r. spectra dur ing the ball milling show that a loss of crystallinity, a decrease of cation-exchange capacity, and an increase of solubility were caused by breaking of Si-O-Si and Si-O-Al bonds in the zeolite structure. Based on such a conclusion, the kinetic equation of the amorphization proce ss was derived and evaluated.