One-pot sol-gel synthesis of a CoMo catalyst for sustainable biofuel production by solvent- And hydrogen-free deoxygenation: effect of the citric acid ratio

Kyung Won Jeon, Jae Wan Cho, Ho Ryong Park, Hyun Suk Na, Jae Oh Shim, Won Jun Jang, Byong Hun Jeon, Hyun Seog Roh

Research output: Contribution to journalArticle

Abstract

Deoxygenation by transition-metal-based catalysts is employed to produce a biofuel from fatty acids. In this study, the citric acid/CoMo ratio of an unsupported CoMo catalyst prepared by a sol-gel method was increased from 1 to 7 to investigate its effect on the physicochemical properties and performance of the catalyst. Deoxygenation was carried out at 300 °C under solvent- and hydrogen-free conditions. The CoMo-3 catalyst (e.g., citric acid/CoMo = 3) showed the highest oleic acid conversion rate, C9-C17hydrocarbon selectivity, oxygen removal rate, and biofuel product quality. This catalyst exhibited the best catalytic performance because it had the highest amount of active species (CoMoO4). Catalyst acidity considerably effected on the catalytic performance. Additionally, the citric acid/CoMo ratio affected the formation of single/mixed Co and Mo oxides.

Original languageEnglish
Pages (from-to)2841-2849
Number of pages9
JournalSustainable Energy and Fuels
Volume4
Issue number6
DOIs
Publication statusPublished - 2020 Jun

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Energy Engineering and Power Technology

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