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Published on: February 20, 2013
Solving the Water Hypersensitive Challenge of Sulfated Solid Superacid in Acid-Catalyzed Reactions
Licheng Li1,2,3, Haiqin Yue1, Suoying Zhang2,3
1College of Chemical Engineering , Nanjing Forestry University , Nanjing 210037 , P. R. China.
Abstract:
In the past decades, water tolerance has always been the long-pending key issue of sulfated solid superacids (SO42-/M xO y) toward industrial applications. Herein, we report a strategy for the facile coating of a thick tunable hydrophobic layer over SO42-/M xO y, which can significantly improve water tolerance, with negligible inhibition on the catalytic performance of SO42-/M xO y. Even after being directly immersed in water, the hydrophobic SO42-/M xO y can still maintain above 90% of original catalytic activity, whereas pristine SO42-/M xO y and control samples are almost completely deactivated. This strategy opens a new route to enhance the water tolerance of sulfated solid superacids.
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