Oxygen Transport Membrane for Thermochemical Conversion of Water and Carbon Dioxide into Synthesis Gas
- authored by
- Wenyuan Liang, Zhengwen Cao, Guanghu He, Jürgen Caro, Heqing Jiang
- Abstract
Conversion of CO2 and H2O into synthesis gas via the solar thermochemical process is usually carried out at a high temperature of above 1500 °C and requires long-term durability of metal oxide catalysts during frequent heating-cooling cycles. Herein, a dual-phase Ce0.9Pr0.1O2-δ-Pr0.6Sr0.4FeO3-δ oxygen transport membrane made of mixed metal oxides was employed for the one-step thermochemical conversion of CO2 and H2O to synthesis gas with a H2/CO ratio of 2:1. Benefitting from the in situ removal of the generated oxygen through the highly oxygen-ion permeable membrane, the effective splitting of CO2 and H2O was achieved at the relatively low temperature of <1000 °C. A synthesis gas production rate of 1.3 mL min-1cm-2 was obtained at 930 °C for a H2O/CO2 feed ratio of 5:1 with a H2O conversion of above 1.7% and a CO2 conversion of above 4.2%. Compared with the discontinuous two-step thermochemical decomposition, the combination of solar energy, catalytic thermolysis, and oxygen transport membrane reactor as proposed in this work offers a new perspective and an alternative route to convert H2O and CO2 into synthesis gas.
- Organisation(s)
-
Institute of Physical Chemistry and Electrochemistry
- External Organisation(s)
-
Chinese Academy of Sciences (CAS)
- Type
- Article
- Journal
- ACS Sustainable Chemistry and Engineering
- Volume
- 5
- Pages
- 8657-8662
- No. of pages
- 6
- ISSN
- 2168-0485
- Publication date
- 02.10.2017
- Publication status
- Published
- Peer reviewed
- Yes
- ASJC Scopus subject areas
- General Chemistry, Environmental Chemistry, General Chemical Engineering, Renewable Energy, Sustainability and the Environment
- Sustainable Development Goals
- SDG 7 - Affordable and Clean Energy
- Electronic version(s)
-
https://doi.org/10.1021/acssuschemeng.7b01305 (Access:
Closed)
