As has been shownthe confinement effect is the most important
feature in zeolite science. It could be counter-argued that the above
opinion neglects the chemical composition of the zeolite micropores,
without which crucial effects such as active sites would mean
to play a secondary role in the chemistry of these materials. But the
real fact is that amorphous aluminosilicates (chemically equivalent
to zeolites but without microporous environments) are ofmuchless
application than zeolites, and this is because the presence of regular
(crystalline) micropores in the latter provides a unique feature
from which a plethora of possibilities emerge. Having said that,
we would like to add that effects of microporous environments
were never neglected, not even in the early times where zeolites
started to be used on a wide range of applications, but on the other
hand, confinement effectswere always difficult to systematize. Eric
Derouane was one of the first scientists to propose a systematic
treatment of the confinement effects of zeolites on the incoming
molecules. His treatment was qualitative and quantitative, elegant
and fruitful, and the consequences of it were important and cleverly
analysed.We believe this represents an indelible contribution
whose consequences are still blossoming and fertilising new fields
of research in zeolite science.
As has been shownthe confinement effect is the most important
feature in zeolite science. It could be counter-argued that the above
opinion neglects the chemical composition of the zeolite micropores,
without which crucial effects such as active sites would mean
to play a secondary role in the chemistry of these materials. But the
real fact is that amorphous aluminosilicates (chemically equivalent
to zeolites but without microporous environments) are ofmuchless
application than zeolites, and this is because the presence of regular
(crystalline) micropores in the latter provides a unique feature
from which a plethora of possibilities emerge. Having said that,
we would like to add that effects of microporous environments
were never neglected, not even in the early times where zeolites
started to be used on a wide range of applications, but on the other
hand, confinement effectswere always difficult to systematize. Eric
Derouane was one of the first scientists to propose a systematic
treatment of the confinement effects of zeolites on the incoming
molecules. His treatment was qualitative and quantitative, elegant
and fruitful, and the consequences of it were important and cleverly
analysed.We believe this represents an indelible contribution
whose consequences are still blossoming and fertilising new fields
of research in zeolite science.
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