Removal of toluene from industrial gas over 13X zeolite supported catalysts by adsorption-plasma catalytic process
| Autor: | Honghong Yi, Xiaolong Tang, Shunzheng Zhao, Xi Yang, Yueqiang Ma, Tiecheng Feng, Xiaoxu Cui, Jiangen Wang |
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| Rok vydání: | 2017 |
| Předmět: |
General Chemical Engineering
Inorganic chemistry chemistry.chemical_element 02 engineering and technology 010402 general chemistry 01 natural sciences Oxygen Catalysis law.invention Inorganic Chemistry chemistry.chemical_compound Adsorption law Specific surface area Calcination Zeolite Waste Management and Disposal Renewable Energy Sustainability and the Environment Organic Chemistry 021001 nanoscience & nanotechnology Pollution Toluene 0104 chemical sciences Fuel Technology chemistry 0210 nano-technology Cobalt Biotechnology |
| Zdroj: | Journal of Chemical Technology & Biotechnology. 92:2276-2286 |
| ISSN: | 0268-2575 |
| DOI: | 10.1002/jctb.5314 |
| Popis: | BACKGROUND To find an appropriate catalyst in the adsorption plasma catalytic process, degradation of toluene over 13X zeolite supported catalysts were studied. RESULTS 13X zeolite exhibited excellent toluene adsorption capacity but weak catalytic ability. After loading Cu, Co, Ce and Mg active compounds by impregnation method, adsorption capacity was reduced and catalytic performance was significantly improved. Co/13X exhibited good adsorption capacity and excellent catalytic performance, which carbon balance was 81.6% with 74.4% of COx for toluene adsorption capacity of 0.51 mmol. Effect of cobalt loading value and calcination temperature of Co/13X for toluene degradation were studied, and found that 5% and 500 °C were more optimal for loading value and calcination temperature. The characterization results of BET, FTIR, XRD, XPS and SEM were correlated with catalysts performance. CONCLUSIONS The active compounds block the pores and reduce the specific surface area of 13X zeolite, but active sites of catalysts can decompose ozone to produce more atomic oxygen species. Co3+ could form π-complexation bonding with toluene and Co3O4 is P-type semiconductor, which has large oxygen adsorption capacity and converts oxygen into O− and O2− easily. Co3O4 presented in the Co/13X is the active point for toluene degradation by adsorption and plasma catalytic. |
| Databáze: | OpenAIRE |
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