Abstract
A SiO 2 -supported MoO 2 nanoparticle catalyst was synthesized by a sol-gel method and tested as catalytic material for the partial oxidation of n -dodecane. MoO 2 nanoparticles supported on SiO 2 are °C, which is a typical reforming temperature for n -dodecane. The formation of Mo O Si bonds at the interface between MoO 2 nanoparticles and SiO 2 support appear to be responsible for the enhanced stability to sintering displayed by the nanoparticles. As a result of this particle size stabilization, SiO 2 supported MoO 2 nanoparticles show an improved reforming activity in terms of syngas generation compared to micron-size commercial MoO 2 . Thus, commercial MoO 2 exhibits a good initial activity at space velocities up to 15 h −1 , but showing only gas-phase reactions at larger values. Conversely, MoO 2 nanoparticles supported on SiO 2 show a high initial reforming activity (e.g., 69% H 2 yield, 82% CO yield and 100% carbon conversion) even at space velocities up to 30 h −1 . Supported MoO 2 nanoparticles also show good stability for the partial oxidation of n -dodecane at 850 ◦C without any sign of deactivation during the first 24 h on-stream.
Original language | American English |
---|---|
Pages (from-to) | 133-140 |
Number of pages | 8 |
Journal | Applied Catalysis B: Environmental |
Volume | 193 |
DOIs | |
State | Published - 15 Sep 2016 |
Keywords
- jet-a fuel
- moo2 nanoparticle and sintering
- partial oxidation
- sio2 support
EGS Disciplines
- Materials Science and Engineering