Computational Screening of Structure-Directing Agents
for the Synthesis of Pure Silica ITE Zeolite
Version 2 2020-08-13, 13:11
Version 1 2020-07-20, 17:36
Posted on 2020-08-13 - 13:11
“Shape” was the first
criterion claimed to explain
the specificity between organic structure-directing agents (OSDAs)
and zeolite micropores. With the advent of computational chemistry
methods applied to study the effectiveness of SDA–zeolite combinations,
“energy” (mainly van der Waals) became the most commonly
invoked concept to explain the zeolite phase selectivity. The lower
the energy, the better the SDA. In this study, we rescue the concept
of shape, and we combine it with the concept of energy within the
frame of a SDA screening approach to identify new SDAs for the synthesis
of cage-based ITE zeolite. Once we identify an appropriate shape fingerprint,
filtering through the SDA database can be done quickly and accurately.
With the shape selection, an automated Monte Carlo software allows
us to assess the suitability using the force-field-calculated zeo–SDA
energy. The computational approach can be promptly applied to other
cage-based zeolites.
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León, Santiago; Sastre, German (2020). Computational Screening of Structure-Directing Agents
for the Synthesis of Pure Silica ITE Zeolite. ACS Publications. Collection. https://doi.org/10.1021/acs.jpclett.0c01734
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