<style face="normal" font="default" size="100%">Effect of calcination temperature on the catalytic activity of zirconia-supported heteropoly acids</style>

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<style face="normal" font="default" size="100%">Effect of calcination temperature on the catalytic activity of zirconia-supported heteropoly acids</style>

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17

<style face="normal" font="default" size="100%">Titania supported silicotungstic acid: an efficient solid acid catalyst for veratrole acylation</style>