Synergistic enhancement of chemical looping-based CO 2 splitting with biomass cascade utilization using cyclic stabilized Ca 2 Fe 2 O 5 aerogel

Zhao Sun, Xiaodong Wu, Christopher K. Russell, M. Darby Dyar, Elizabeth C. Sklute, Sam Q Toan, Maohong Fan, Lunbo Duan, Wenguo Xiang

Research output: Contribution to journalArticle

Abstract

Thermochemical splitting of carbon dioxide to carbon-containing fuels or value-added chemicals is a promising method to reduce greenhouse effects. In this study, we propose a novel process for synchronous promotion of chemical looping-based CO 2 splitting with biomass cascade utilization. The superiority of the process is reflected in (1) a biomass fast pyrolysis process is carried out for syngas, phenolic-rich bio-oil, and biochar co-production with oxygen carrier reduction; (2) the reduced oxygen carrier and the biomass-derived biochar were both applied for CO 2 splitting during the oxygen carrier oxidation stage with carbon monoxide production as well as oxygen carrier re-oxidation; (3) the redox looping of the oxygen carrier was found to synchronously promote the comprehensive utilization of biomass and CO 2 splitting to CO. Various characterizations e.g. HRTEM- and SEM-EDX mapping, H 2 -TPR, CO 2 -TPO, XRD, XPS, N 2 nitrogen adsorption and desorption isotherm tests, Mössbauer, etc. were employed to elucidate the aerogels' microstructures, phase compositions, redox activity, and cyclic stability. Results indicate that the Ca 2 Fe 2 O 5 aerogel is a promising initiator of the proposed chemical looping process from the perspectives of biomass utilization efficiency, redox activity, and cyclic durability.

Original languageEnglish (US)
Pages (from-to)1216-1226
Number of pages11
JournalJournal of Materials Chemistry A
Volume7
Issue number3
DOIs
StatePublished - Jan 1 2019

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Aerogels
Carbon Monoxide
Biomass
Oxygen
Greenhouse effect
Oxidation
Phase composition
Carbon monoxide
Isotherms
Energy dispersive spectroscopy
Desorption
Carbon dioxide
Durability
Carbon Dioxide
Pyrolysis
X ray photoelectron spectroscopy
Oils
Nitrogen
Carbon
Adsorption

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Synergistic enhancement of chemical looping-based CO 2 splitting with biomass cascade utilization using cyclic stabilized Ca 2 Fe 2 O 5 aerogel . / Sun, Zhao; Wu, Xiaodong; Russell, Christopher K.; Dyar, M. Darby; Sklute, Elizabeth C.; Toan, Sam Q; Fan, Maohong; Duan, Lunbo; Xiang, Wenguo.

In: Journal of Materials Chemistry A, Vol. 7, No. 3, 01.01.2019, p. 1216-1226.

Research output: Contribution to journalArticle

Sun, Zhao ; Wu, Xiaodong ; Russell, Christopher K. ; Dyar, M. Darby ; Sklute, Elizabeth C. ; Toan, Sam Q ; Fan, Maohong ; Duan, Lunbo ; Xiang, Wenguo. / Synergistic enhancement of chemical looping-based CO 2 splitting with biomass cascade utilization using cyclic stabilized Ca 2 Fe 2 O 5 aerogel In: Journal of Materials Chemistry A. 2019 ; Vol. 7, No. 3. pp. 1216-1226.
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