Novel mesoporous TiO 2 (B) whisker-supported sulfated solid superacid with unique acid characteristics and catalytic performances, Applied Catalysis A, General (2019),
In the past decades,
water tolerance has always been the long-pending
key issue of sulfated solid superacids (SO4
2–/M
x
O
y
) toward
industrial applications. Herein, we report a strategy for the facile
coating of a thick tunable hydrophobic layer over SO4
2–/M
x
O
y
, which can significantly improve water tolerance, with negligible
inhibition on the catalytic performance of SO4
2–/M
x
O
y
. Even
after being directly immersed in water, the hydrophobic SO4
2–/M
x
O
y
can still maintain above 90% of original catalytic
activity, whereas pristine SO4
2–/M
x
O
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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