Carboxylic acid-modified metal oxide catalyst for selectivity-tunable aerobic ammoxidation.

ABSTRACT: Controlling the reaction selectivity of a heterobifunctional molecule is a fundamental challenge in many catalytic processes. Recent efforts to design chemoselective catalysts have focused on modifying the surface of metal nanoparticle materials having tunable properties. However, precise control over the surface properties of base-metal oxide catalysts remains a challenge. Here, we show that green modification of the surface with carboxylates can be used to tune the ammoxidation selectivity toward the desired products during the reaction of hydroxyaldehyde on manganese oxide catalysts. These modifications improve the selectivity for hydroxynitrile from 0 to 92% under identical reaction conditions. The product distribution of dinitrile and hydroxynitrile can be continuously tuned by adjust

SUBMITTER: Jia X 

PROVIDER: S-EPMC5834450 | biostudies-literature | 2018 Mar

REPOSITORIES: biostudies-literature