期刊
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
卷 46, 期 48, 页码 24581-24590出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2019.11.240
关键词
Thermochemical cycles; Micro-channel reactor; Perovskite; LSCF; Kinetics
资金
- Thailand Research Fund [RSA6180061]
- National Research Council of Thailand [KMUTNB-GOV-59-43, KMUTNB-GOV-60-55, KMUTNB-61-GOV-03-44, KMUTNB-61-GOV-C1-46]
- PTT Public Company Limited
- King Mongkut's University of Technology North Bangkok [KMUTNB-GEN-57-49, KMUTNB-GEN 59-65]
- NUI-RC
A stainless steel micro-channel reactor was tailor-made for the two-step thermochemical cycles of H2O and CO2 co-splitting reaction, using La0.3Sr0.7Co0.7Fe0.3O3 (LSCF) coating. The LSCF with surface hydroxyl groups showed favorable behavior in H2O splitting, with optimal operating temperature at 700 degrees C. The activation energy for H2O and CO2 splitting was estimated, with H2O splitting having a pre-exponential factor of 595.24 s-1 and CO2 splitting having a pre-exponential factor of 698.79 s-1.
A stainless steel micro-channel reactor was tailor-made to an in house-design for process intensification propose. The reactor was used for a two-step thermochemical cycles of H2O and CO2 co-splitting reaction, in the presence of La0.3Sr0.7Co0.7Fe0.3O3 (LSCF). LSCF was coated inside the reactor using wash-coat technique. Oxygen storage capacity of LSCF was determined at 4465 mmol/g, using H2-TPR technique. H2O-TPSR and CO2-TPSR results suggested that a formation of surface hydroxyl group was the cause of H2O splitting favorable behavior of LSCF. Optimal operating reduction/oxidation temperature was found at 700 degrees C, giving 2266 mmol/g of H2, 705 mmol/g of CO, and 67% of solid conversion, when the H2O and CO2 ratio was 1 to 1, and WSHV was 186,000 mL/g.h. Activation energy of H2O spitting and CO2 splitting was estimated at 87.33 kJ/mol, and 102.85 kJ/mol The pre exponential factor of H2O splitting and CO2 splitting was 595.24 s-1 and 698.79 s-1, respectively. (c) 2019 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据