TY - JOUR
T1 - CaO catalyst for multi-route conversion of oakwood biomass to value-added chemicals and fuel precursors in fast pyrolysis
AU - Gupta, Jyoti
AU - Papadikis, Konstantinos
AU - Konysheva, Elena
AU - Lin, Yi
AU - Kozhevnikov, Ivan V.
AU - Li, Jingjing
N1 - Publisher Copyright:
© 2020 Elsevier B.V.
PY - 2021/5/15
Y1 - 2021/5/15
N2 - The impact of CaO on oakwood pyrolysis was explored by the Py-GC/MS at 500 °C. Ca(OH)2 presents on the CaO surface, indicating its partial hydration (noted as CaOOH). CaOOH 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 CO2, acids, furans, aldehydes, ether groups, whilst the fractions of alcohols, esters, sugars, and alkoxybenzene decreased noticeably. The use of partially hydrated CaOOH in the CFP can create conditions where by-products generated during the ketonisation and phenolics upgrading reactions (CO2, H2O, CO) interact through the adsorption enhance water-gas-shift reaction and through coking reactions with formation of H2 used for hydrogenation during multistep conversion of furfural to cyclopentanone in a vapour phase.
AB - The impact of CaO on oakwood pyrolysis was explored by the Py-GC/MS at 500 °C. Ca(OH)2 presents on the CaO surface, indicating its partial hydration (noted as CaOOH). CaOOH 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 CO2, acids, furans, aldehydes, ether groups, whilst the fractions of alcohols, esters, sugars, and alkoxybenzene decreased noticeably. The use of partially hydrated CaOOH in the CFP can create conditions where by-products generated during the ketonisation and phenolics upgrading reactions (CO2, H2O, CO) interact through the adsorption enhance water-gas-shift reaction and through coking reactions with formation of H2 used for hydrogenation during multistep conversion of furfural to cyclopentanone in a vapour phase.
KW - Catalytic fast pyrolysis
KW - Furfural transformation
KW - Ketonisation
KW - Oakwood biomass conversion
KW - Partially hydrated CaO
UR - http://www.scopus.com/inward/record.url?scp=85098868805&partnerID=8YFLogxK
U2 - 10.1016/j.apcatb.2020.119858
DO - 10.1016/j.apcatb.2020.119858
M3 - Article
AN - SCOPUS:85098868805
SN - 0926-3373
VL - 285
JO - Applied Catalysis B: Environmental
JF - Applied Catalysis B: Environmental
M1 - 119858
ER -
