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Investigation of Zr‐doped ceria for solar thermochemical valorization of CO 2
Author(s) -
Takalkar Gorakshnath,
Bhosale Rahul R.
Publication year - 2020
Publication title -
international journal of energy research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.808
H-Index - 95
eISSN - 1099-114X
pISSN - 0363-907X
DOI - 10.1002/er.5205
Subject(s) - thermogravimetric analysis , materials science , crystallite , molar ratio , precipitation , chemical engineering , doping , reactivity (psychology) , phase (matter) , nuclear chemistry , inorganic chemistry , analytical chemistry (journal) , catalysis , chemistry , metallurgy , organic chemistry , optoelectronics , engineering , medicine , physics , alternative medicine , pathology , meteorology
Summary This study belongs to the estimation of the CO 2 conversion ability of Ce 1− x Zr x O 2 (CZ) materials performing multiple thermogravimetric CO 2 splitting (CDS) cycles. By varying the molar concentrations of Zr in the range of 0.05 to 0.5, the CZ materials were prepared by using co‐precipitation method. By employing various analytical methods, the physical properties such as phase and elemental composition, crystallite size, and particle morphology of the as‐synthesized CZ materials were recognized. The systematic estimation of the reactivity of each CZ material was performed by conducting multiple cycles in a thermogravimetric analyzer (TGA). Obtained findings indicated that Ce 0.7 Zr 0.3 O 2 (CZ30) and Ce 0.85 Zr 0.15 O 2 (CZ15) were proficient towards producing maximum amounts of O 2 ( n O 2 ) and CO ( n CO ) than other CZ materials. It was further understood that, to achieve higher n O 2and n CO as compared with CeO 2 , the molar concentration of the Zr should be in the range of 15% to 35%.