We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
Spherical Boron Nitride Supported Gold-Copper Catalysts for the Low-Temperature Selective Oxidation of Ethanol.
- Authors
Wang, Yang; Shi, Lei; Lu, WENduo; Sun, Qiang; Wang, ZifENg; Zhi, Chunyi; Lu, An ‐ Hui
- Abstract
The 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 Au δ−. 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.
- Subjects
BORON nitride; GOLD catalysts; COPPER catalysts; ETHANOL; OXIDATION; TEMPERATURE effect
- Publication
ChemCatChem, 2017, Vol 9, Issue 8, p1363
- ISSN
1867-3880
- Publication type
Article
- DOI
10.1002/cctc.201700002