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Sulfonated polystyrene grafted silica gel particles were synthesized for use as an acid catalyst in the liquid phase esterification of acetic acid with ethanol at 313–353K. The synthesis of the grafted silica gel particles consists of three steps: polymerization, grafting, and sulfonation. The synthesized catalyst is non-cross-linked, non-swelling, and mechanically as well as chemically stable. It...
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