Abstract
AbstractThe oxidation of ethanol to acetaldehyde in the fine‐chemical industry is a burgeoning process that requires leading‐edge technology. A major challenge is to find a catalyst with high ethanol conversion and high acetaldehyde selectivity at a high gas hourly space velocity (GHSV) and a low operation temperature. Boron nitride nanosphere supported Au–Cu nanoparticles offer much opportunity for low‐temperature ethanol oxidation. A catalytic ethanol conversion of 77 % and a selectivity of 94 % towards acetaldehyde were achieved at a temperature of 180 °C and a high GHSV of 100 000 mL gcat−1 h−1, values that far exceed those obtained with Au–Cu/SiO2. The immobilized Au–Cu nanoparticles have an average size of approximately 3 nm, and the majority of Au species are assigned Auδ−. The weak interaction of acetaldehyde with both Au–Cu active phases and the boron nitride support facilitates the adsorption–desorption behavior of acetaldehyde. As a result, the progression of secondary reactions is slowed and the degree of coverage of the active sites is minimized.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
