Effect of calcination temperature on the association between free NiO species and catalytic activity of Ni−Ce0.6Zr0.4O2 deoxygenation catalysts for biodiesel production
| Autor: | Jong Wook Bae, Hak-Min Kim, Hyun Suk Na, Hyun Seog Roh, Chang Hyun Ko, Da We Lee, Kyung Won Jeon, Won Jun Jang, Jae Oh Shim, Byong-Hun Jeon, Yeol Lim Lee, Seong Yeun Yoo |
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| Předmět: |
inorganic chemicals
060102 archaeology Renewable Energy Sustainability and the Environment Chemistry 020209 energy Non-blocking I/O 06 humanities and the arts 02 engineering and technology law.invention Catalysis Oleic acid chemistry.chemical_compound law Chemisorption Desorption 0202 electrical engineering electronic engineering information engineering 0601 history and archaeology Calcination Selectivity Deoxygenation Nuclear chemistry |
| Zdroj: | Won-Jun Jang |
| DOI: | 10.1016/j.renene.2018.07.042 |
| Popis: | In this study, a series of Ni−Ce0.6Zr0.4O2 catalysts, which were synthesized by co-precipitation followed by calcination at different temperatures, were applied for the deoxygenation of oleic acid. The physicochemical properties of the catalysts were characterized by N2 adsorption-desorption, X-ray diffraction (XRD), H2 chemisorption, H2 temperature-programmed reduction (H2-TPR), NH3 temperature-programmed desorption (NH3-TPD), and X-ray photoelectron spectroscopy (XPS). The Ni−Ce0.6Zr0.4O2 catalyst calcined at 300 °C exhibited the highest conversion for oleic acid as well as selectivity for diesel-range compounds. It is predominantly related to the highest amount of free NiO species. In addition, the acidity of the catalyst significantly affected the selectivity and distribution of products. |
| Databáze: | OpenAIRE |
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