Review of the Two-Step H₂O/CO₂-Splitting Solar Thermochemical Cycle Based on Zn/ZnO Redox Reactions.
Review of the Two-Step H₂O/CO₂-Splitting Solar Thermochemical Cycle Based on Zn/ZnO Redox Reactions.
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DOI：
10.3390/ma3114922
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发表时间：
2010-11-12
期刊：
影响因子：
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通讯作者：
Steinfeld A
中科院分区：
文献类型：
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作者：
Loutzenhiser PG;Meier A;Steinfeld A
本文全面概述了迄今为止关于两步太阳能H2O和/或CO2裂解热化学循环的工作，其中Zn/ZnO氧化还原反应产生H2和/或CO，即，合成气-可再生液态烃燃料的前体。两步循环包括：（1）使用集中的太阳能作为高温工艺热源，将ZnO吸热分解为Zn和O2;以及（2）分别用H2O/CO2对Zn进行非太阳能放热氧化，以产生H2/CO;然后将所得ZnO再循环到第一步。基本的科学和太阳能反应堆工程技术进步的大纲提供沿着与生命周期和经济分析。
This article provides a comprehensive overview of the work to date on the two‑step solar H2O and/or CO2 splitting thermochemical cycles with Zn/ZnO redox reactions to produce H2 and/or CO, i.e., synthesis gas—the precursor to renewable liquid hydrocarbon fuels. The two-step cycle encompasses: (1) The endothermic dissociation of ZnO to Zn and O2 using concentrated solar energy as the source for high-temperature process heat; and (2) the non-solar exothermic oxidation of Zn with H2O/CO2 to generate H2/CO, respectively; the resulting ZnO is then recycled to the first step. An outline of the underlying science and the technological advances in solar reactor engineering is provided along with life cycle and economic analyses.