Highly chemoselective hydrogenation of crotonaldehyde over Ag-In/SBA-15 fabricated by a modified “two solvents” strategy

摘要

In the challenging crotonaldehyde hydrogenation to crotyl alcohol, an Ag-ln/SBA-15 catalyst fabricated by a modified "two solvents" strategy shows an unprecedentedly high yield of 86% at a selectivity of 87%, which exceeds the best results on Pt-, Au- and other Ag-based heterogeneous catalysts reported so far. Among α,β-unsaturated aldehydes, crotonaldehyde (CRAL) is one of the most difficult molecules to be selectively hydrogenated to α,β-unsaturated alcohols over heterogeneous catalysts. However, Ag, a well-documented oxidation catalyst, unexpectedly exhibits notably high selectivity in CRAL