Thermochemical splitting of CO2 using solution combustion synthesized lanthanum–strontium–manganese perovskites

Gorakshnath Takalkar, Rahul R. Bhosale, Fares AlMomani, Suliman Rashid, Hazim Qiblawey, Mohammed Ali Saleh Saad, Majeda Khraisheh, Gopalakrishnan Kumar, Ram B. Gupta, Rajesh V. Shende

Research output: Contribution to journalArticlepeer-review

Abstract

Redox reactivity of La(1-x)SrxMnO3 (LSM) perovskites towards a solar thermochemical CO2 splitting (CS) cycle is investigated. The LSM perovskites are synthesized via a solution combustion synthesis (SCS) method using glycine as the reducing agent. Multiple analytical techniques are used for the structural characterization of the LSM perovskites. Thermogravimetric thermal reduction (TR) and CS cycles (in three sets: one, three and ten cycles) are conducted to estimate the amounts of O2 released (nO2) and CO produced (nCO) by each LSM perovskite. Higher nO2 by each LSM perovskite, as compared to the nCO during the first cycle. The nO2 is decreased, and the re-oxidation capacity of each LSM perovskite is improved from cycle one to three. In terms of the average nO2 and nCO from cycle 2 to cycle 10, the La0.60Sr0.41Mn0.99O2.993 (214.8 μmol of O2/g·cycle) and La0.30Sr0.70Mn0.99O2.982 perovskites (342.1 μmol of CO/g·cycle) are observed to have the uppermost redox reactivity. The redox reactivity of all the LSM perovskites (except for La0.88Sr0.11Mn1.00O2.980) is recorded to be higher than that of the widely studied CeO2 material.

Original languageEnglish
Article number119154
JournalFuel
Volume285
DOIs
Publication statusPublished - 2021 Feb 1

Bibliographical note

Funding Information:
Open Access funding provided by the Qatar National Library. This publication was made possible by the NPRP grant ( NPRP8-370-2-154 ) from the Qatar National Research Fund (a member of Qatar Foundation). The statements made herein are solely the responsibility of author(s).

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Fuel Technology
  • Energy Engineering and Power Technology
  • Organic Chemistry

Fingerprint Dive into the research topics of 'Thermochemical splitting of CO<sub>2</sub> using solution combustion synthesized lanthanum–strontium–manganese perovskites'. Together they form a unique fingerprint.

Cite this