Effect of calcination temperature on the association between free NiO species and catalytic activity of Ni−Ce0.6Zr0.4O2 deoxygenation catalysts for biodiesel production

Kyung Won Jeon, Jae Oh Shim, Won Jun Jang, Da We Lee, Hyun Suk Na, Hak Min Kim, Yeol Lim Lee, Seong Yeun Yoo, Hyun Seog Roh, Byong Hun Jeon, Jong Wook Bae, Chang Hyun Ko

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9 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)144-151
Number of pages8
JournalRenewable Energy
Volume131
DOIs
Publication statusPublished - 2019 Feb

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment

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