Aging process is part of zeolite synthesis. What is the importance of the step? May you suggest whether I should aging before or after hydrothermal?
In zeolite synthesis, the term aging is related to a an aging period before the hydrothermal treatment. This aging is usually performed at room temperature. They are many reports of the positive impact of an aging period, but it does not mean that it is always necessary to add this step. It can help to orient the crystallisation toward the desired structure (favor the growth of the desired phase over an undesired one), decrease the crystallisation time or favor the formation of smaller particles (favor nucleation over growth).
See for example
https://link.springer.com/chapter/10.1007%2F978-3-662-03764-5_1
or
Article Effect of Aging on the Precursor Sol for the Synthesis of Na...
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