Abstract
Dependence of reactivity on particle size in heterogeneous catalytic systems has been well documented. Conversely, limited research exists on nanocatalytic combustion because achieving and maintaining monodispersed nanoparticles on substrates is challenging. This study looked at nano-sized platinum particles (obtained via colloidal synthesis) deposited within a solid-matrix to catalyze near stochiometric methanol-air mixture. A number of narrow size ranges were investigated for reactivity; and their trends studied with respect to the average nanoparticle dimension (between 8-12 nm). Material characterization pre- and post-catalysis provided a measure of particle size and morphology evolution as a function of reactivity. Materials were characterized by SEM, TEM and XRD, while the catalytic activity was monitored by temperature histories and product species concentration. Key outcomes included ambient condition light-off temperature data and details on the relationship between reactivity and catalyst nanostructure. The results provide an important insight on nanocatalyst-based combustion.
| Original language | American English |
|---|---|
| Journal | ACS National Meeting Book of Abstracts |
| State | Published - 2011 |
| Externally published | Yes |
| Event | 241st ACS National Meeting and Exposition - Anaheim, CA, United States Duration: Mar 27 2011 → Mar 31 2011 |
ASJC Scopus subject areas
- General Chemistry
- General Chemical Engineering