CaO catalyst for multi-route conversion of oakwood biomass to value-added chemicals and fuel precursors in fast pyrolysis

Gupta, Jyoti, Papadikis, Konstantinos, Konysheva, Elena Yu, Lin, Yi, Kozhevnikov, Ivan V ORCID: 0000-0003-2453-5256 and Li, Jingjing (2021) CaO catalyst for multi-route conversion of oakwood biomass to value-added chemicals and fuel precursors in fast pyrolysis. APPLIED CATALYSIS B-ENVIRONMENTAL, 285. p. 119858. ISSN 0926-3373, 1873-3883

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Abstract

The impact of CaO on oakwood pyrolysis was explored by the Py-GC/MS at 500 °C. Ca(OH)<inf>2</inf> presents on the CaO surface, indicating its partial hydration (noted as CaO<inf>OH</inf>). CaO<inf>OH</inf> promoted the ketonisation of carboxylic acids to aliphatic ketones, furfural to cyclopentanone/2-cyclopentenone, facilitated the elimination of the methoxy-phenolic compounds. The catalyst loading did not show any significant effect on the formation of acetone, while a noticeable reduction in the phenolics was revealed. Increasing catalyst loading almost eliminated CO<inf>2</inf>, acids, furans, aldehydes, ether groups, whilst the fractions of alcohols, esters, sugars, and alkoxybenzene decreased noticeably. The use of partially hydrated CaO<inf>OH</inf> in the CFP can create conditions where by-products generated during the ketonisation and phenolics upgrading reactions (CO<inf>2</inf>, H<inf>2</inf>O, CO) interact through the adsorption enhance water-gas-shift reaction and through coking reactions with formation of H<inf>2</inf> used for hydrogenation during multistep conversion of furfural to cyclopentanone in a vapour phase.

Item Type:	Article
Uncontrolled Keywords:	Partially hydrated CaO, Oakwood biomass conversion, Catalytic fast pyrolysis, Ketonisation, Furfural transformation
Depositing User:	Symplectic Admin
Date Deposited:	15 Jan 2021 09:28
Last Modified:	11 Jun 2025 21:23
DOI:	10.1016/j.apcatb.2020.119858
Related Websites:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3113617