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Chemoselective Hydrogenation of Cinnamaldehyde on Iron-Oxide Modified Pt/MoO3-y Catalysts.

Chemistry, An Asian Journal 2018 September 20
Hydrogenation of α,β-unsaturated aldehydes to value-added unsaturated alcohols suffers a huge challenge in chemoselectivity. Herein, surface decoration by FeOx is introduced to remarkably improve the selectivity of cinnamyl alcohol (COL) in cinnamaldehyde (CAL) hydrogenation on Pt/MoO3-y. The enhanced acidity on Pt-FeOx interfaces is beneficial for the chemisorption and activation of C=O bonds, promoting selective hydrogenation. The optimal catalysts with defined FeOx decoration afford efficient and chemoselective CAL hydrogenation (sel.: 91.3%) under a mild condition (PH2 = 1 MPa, T = 30 oC). Moreover, such innovation is further extended to develop other efficient metal (Ir, Rh and Pd) catalysts, identifying a universal promotion to Pt-group metals. This work is anticipated to inspire the rational design of high-performance catalysts via effective surface/interface engineering.

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