In the preparation of a supported catalyst using impregnation (IWI or WI), what is the reason for pre-drying (oven) a support before impregnating it?

07 July 2018 0 3K Report

I am using SiO2 and Al2O3 as support materials in catalyst development and in some methods it is mentioned that the support is dried (pre-heating in the oven) before impregnation. I want to understand the reason behind this in terms of the interaction of support surface and a precursor solution.

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