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Au/CuSiO3 nanotubes: High-performance robust catalysts for selective oxidation of ethanol to acetaldehyde
- Source :
- Nano Research. 9:2681-2686
- Publication Year :
- 2016
- Publisher :
- Springer Science and Business Media LLC, 2016.
-
Abstract
- Novel gold-supporting silicate nanotubes are synthesized via a hydrothermal method followed by colloid deposition. Their catalytic performance for the selective oxidation of ethanol to acetaldehyde is assessed. The results show that Au/CuSiO3 nanotubes exhibit both high activity and selectivity at high gas hourly space velocity (GHSV). Ethanol conversion can reach up to ~98%, and the selectivity for acetaldehyde is ~93% at 250 °C and ~100,000 mL·gcat–1·h–1. In comparison, the catalytic activity of Au/MgSiO3 nanotubes is relatively low, and ethanol conversion reaches only ~25% at 250 °C. However, when Cu species are added to Au/MgSiO3, the catalytic activity improves significantly, indicating that the interactions between Au nanoparticles and Cu species are responsible for the high performance for selective oxidation of ethanol to acetaldehyde.
- Subjects :
- Ethanol
Chemistry
Inorganic chemistry
Acetaldehyde
Nanoparticle
02 engineering and technology
010402 general chemistry
021001 nanoscience & nanotechnology
Condensed Matter Physics
01 natural sciences
Atomic and Molecular Physics, and Optics
Hydrothermal circulation
0104 chemical sciences
Catalysis
chemistry.chemical_compound
Colloid
General Materials Science
Electrical and Electronic Engineering
0210 nano-technology
Selectivity
Space velocity
Subjects
Details
- ISSN :
- 19980000 and 19980124
- Volume :
- 9
- Database :
- OpenAIRE
- Journal :
- Nano Research
- Accession number :
- edsair.doi...........aaab48a8c798d9a4c361a10df73cab42