Cu-Promoted Cobalt Oxide Film Catalyst for Efficient Gas Emissions Abatement
- 3 Downloads
Thin film catalysts have been recently reported as promising catalysts owing to their good catalytic activity and reduced material amount, leading to low-cost efficient catalysts for gaseous emissions control. Here, we report the slight loading of Cu in cobalt spinel using a one-step pulsed-spray evaporation chemical vapor deposition (PSE-CVD) synthesis technique for efficient short-chain volatile organic compounds (VOCs) emissions treatment. Crystalline structure and morphology analyses revealed nano-crystallite sizes and open-like morphology. The catalytic performance was evaluated through the complete oxidation of C3H6, as a short-chain representative model of VOCs, at a high gas hourly space velocity (GHSV). Very good activity was obtained towards the complete abatement of C3H6 at low temperature and no carbon monoxide (CO) was formed during the oxidation process. Slightly-promoted Co3O4 catalyst with Cu introduction resulted in high catalytic activity comparing to the performance of the catalysts in the literature, due to the high dispersion of Cu and high active surface oxygen amount. Moreover, to evaluate the capability of the used catalysts under near realistic reaction conditions, CO2 effect on the catalytic activity was performed and the catalyst exhibited very good results. Thus, the adopted slightly-doping strategy to tailor a high active catalyst at low temperature could establish a very promising route to strongly enhance the activity of such other catalysts towards gas emissions abatement at low temperature.
Keywordslow Cu-doping PSE-CVD technique thin film catalysts complete catalytic oxidation VOCs
Unable to display preview. Download preview PDF.
The authors thank the financial support from the Ministry of Science and Technology of China (2017YFA0402800) and Natural Science Foundation of China (No. 91541102/51476168). Achraf El Kasmi would thank the support of Chinese Academy of Sciences for senior international scientists (Grant No. 2017PE009). Muhammad Waqas is grateful for the financial support of CAS-TWAS scholarship.
- Tchoua N.P.H., El Kasmi A., Weiss T., Vieker H., Beyer A., Zielasek V., Kohse-Höinghaus K., Bäumer M., Investigation of the growth behaviour of Cobalt thin films from chemical vapour deposition, using directly coupled X-ray photoelectron spectroscopy, Zeitschrift Für Physikalische Chemie, 2015, 229: 1887–1905.Google Scholar
- Liotta L.F., Ousmane M., Di Carlo G., Pantaleo G., Deganello G., Marcì G., Retailleau L., Giroir-Fendler A., Total oxidation of propene at low temperature over Co3O4-CeO2 mixed oxides: Role of surface oxygen vacancies and bulk oxygen mobility in the catalytic activity, Applied Catalysis A: General, 2008, 347: 81–88.CrossRefGoogle Scholar