Premium
CO 2 reduction with Zn particles in a packed‐bed reactor
Author(s) -
Loutzenhiser Peter G.,
Barthel Frank,
Stamatiou Anastasia,
Steinfeld Aldo
Publication year - 2011
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.12460
Subject(s) - exothermic reaction , oxidizing agent , endothermic process , packed bed , thermochemical cycle , dissociation (chemistry) , redox , chemical engineering , materials science , chemistry , zinc , analytical chemistry (journal) , adsorption , metallurgy , catalysis , chromatography , organic chemistry , hydrogen production , engineering
A two‐step solar thermochemical cycle for splitting CO 2 with Zn/ZnO redox reactions is considered, consisting of: (1) the endothermic dissociation of ZnO with concentrated solar radiation as the heat source and (2) the non‐solar, exothermic, reduction of CO 2 to CO by oxidizing Zn to ZnO; the latter is recycled to the first step. The second step of the cycle is investigated using a packed‐bed reactor where micron‐sized Zn particles were immobilized in mixtures with submicron‐sized ZnO particles. Experimental runs were performed for Zn mass fractions in the range 67–100 wt % and CO 2 concentration in the range 25–100%, yielding Zn‐to‐ZnO conversions up to 71% because of sintering prevention, as corroborated by SEM analysis. © 2010 American Institute of Chemical Engineers AIChE J, 2011
Accelerating Research
Robert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom
Address
John Eccles HouseRobert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom