Open AccessA Study of the Brönsted Site Acidity of Crystalline and Amorphous Aluminosilicates: 1. Desorption of Ammonia, Dehydration of 2-Propanol and Cracking of Cumene
Author(s) -
В. В. Брей,
V. A. Kaspersky,
K. N. Khomenko,
A. A. Chuiko
Publication year - 1996
Publication title -
adsorption science and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.682
H-Index - 36
eISSN - 2048-4038
pISSN - 0263-6174
DOI - 10.1177/026361749601400602
Subject(s) - chemistry , cumene , aluminosilicate , inorganic chemistry , desorption , faujasite , fumed silica , dehydration , propanol , ammonia , zeolite , catalysis , thermal desorption spectroscopy , mordenite , propene , adsorption , nuclear chemistry , organic chemistry , methanol , biochemistry
The acidity of the H-form aluminosilicates, which include ZSM-5, mordenite, Y-faujasite, Al-containing aerosils and silica gels, and the layering of aluminosilicate compounds on an aerosil surface was measured by temperature-programmed mass spectrometry desorption (TPD) of NH 3 . It was found that the desorption energies of NH 3 decrease in the order: H-M > H-ZSM-5 > Al-aerosils> H-Y > CVD Al-silicates> Al-silica gels. The catalytic activities of the studied samples in 2-propanol dehydration and cumene cracking have been shown to decrease in the same order.