Total Oxidation of Toluene and Propane over Supported Co3O4 Catalysts: Effect of Structure/Acidity of MWW Zeolite and Cobalt Loading
Citations Over TimeTop 10% of 2021 papers
Abstract
A set of supported Co3O4 catalysts have been designed and prepared to study the effect of textural characteristics and Brønsted acid sites concentration of MWW zeolite support, as well as cobalt loading on catalyst activity. Detailed characterization of the catalysts with a thorough study on their performance in the total oxidation of toluene and propane revealed that MCM-22 is the optimal support and that increasing Si/Al and decreasing external surface of MCM-22 positively affect the activity of supported Co3O4 catalysts, which is determined by their low-temperature reducibility. The activity of the Co/MCM-22 catalysts increased with cobalt content (5-20 wt %), consistent with enhancing the amount of low-temperature reducible Co3O4. The optimized catalyst containing 20% Co supported on dealuminated MCM-22 presented high turnover frequency (TOF) values in both toluene (2.6 × 10-5 s-1 at 270 °C) and propane (3.9 × 10-5 s-1 at 215 °C) oxidation and was characterized by outstanding cycling stability, long-term durability, water tolerance, and sintering resistance.
Related Papers
- → Fast and efficient synthesis of SSZ-13 by interzeolite conversion of Zeolite Beta and Zeolite L(2019)65 cited
- → Estimation of activation energy for desorption of low-volatility dioxins on zeolites by TPD technique(2003)48 cited
- Research Progress of zeolite synthesis from kaolin(2010)
- Polysulfone으로 제올라이트 A를 고정화한 방사성 물질제거용 PS-zeolite 비드 제조(2015)
- 쳔연 Zeolite ( 제올라이트 ) 를 이용한 중금속 흡착제의 개발(1991)