Geoscience Reference
In-Depth Information
1. Deposition
2. Possible embedding in matrix
Method I
Method II
Hydrothermal synthesis
1. Formation of nuclei
from solution
Method III
2. Hydrothermal synthesis
Figure 6.36 Method I—Proposed reaction scheme for design of zeolite layers and films on
organophosphate films. Method II—Aluminophosphate nuclei attach on organophosphonate
film. Method III—Growth of hexagonal crystals
[141]
.
sieve films. Such self-assembled layers include self-assembled functional layers
and they have potential applications in microelectronics and nonlinear optical
devices
[147]
.
Thus, there is a great variety of synthesis approaches regarding the design of
molecular sieve layers and membranes. These aspects will play a major role in the
future zeolite research.
6.9 Applications of Zeolites
Zeolites are conventionally used as adsorbents, in gas separation, in shape-selective
catalysis, and in ion exchange
[28,40]
. In recent years, there is an increased research
activity in molecular sieve science and technology toward the development of
advanced materials. There are several reports available in the literature dealing with
the controlled incorporation of guest compounds into a zeolitic framework to get
