Study on Hydrogen Permeation of Ce-based Ceramics Membrane
- Abstract
- The objective of this work is to enhance the hydrogen permeation as well as selectivity between H2/CO gases at various temperatures.
Porous SiC ceramics were prepared by using recycled SiC sludge, which is an industrial waste generated from solar cell industry. In order to enhance the hydrogen permeation, Cerium oxide (CeO2) was synthesized by sol-gel process and SiC-CeO2 composite membrane via dip-coating method was fabricated to evaluate of hydrogen permeation.
In case of SiC-CeNiO3 membrane, the prepared SiC-CeNiO3 powders mixed with alloying method using a nickel metal powders having a ductility and high mechanical strength was fabricated as Cermet (Ceramic / Metal) composite separation membrane by hot-press-sintering (HPS). We have discussed the effects of the hydrogen separation membrane, which is produced in Cermet system. However, there is a drawback in contrast with the selectivity in spite of that the permeation was increased. In addition, Ce-based membrane was on reaction of reduction under the hydrogen atmosphere.
For this reason, Lanthanum (La2Ce2O7) complex oxides were synthesized, membrane permeability and selectivity of values on the experimental were obtained improved results. The prepared powders and composite membranes were investigated by XRD, FE-SEM, BET techniques. By using the hydrogen permeation membrane, the evaluation under a variety of pressures and temperatures was carried out through H2 and CO gas.
- Issued Date
- 2014
- Awarded Date
- 2014-02
- Type
- Dissertation
- Alternative Author(s)
- Park, Ji Hye
- Affiliation
- 성신여자대학교 일반대학원
- Department
- 일반대학원 화학과
- Advisor
- 정미원
- Table Of Contents
- ABSTRACT
LIST OF FIGURES
Chapter 1. Hydrogen Permeation of La2Ce2O7 Composite
Membrane
1.1 Introduction
1.2 Experimental
1.2.1 Preparation of La2Ce2O7 powders
1.2.2 Fabrication of La2Ce2O7 membranes
1.2.3 Characterization
1.3 Results and Discussion
1.4 Conclusion
Chapter 2. Dip-coating of Nano-sized CeO2 on SiC Membrane and Its Effect on Thermal Diffusivity
2.1 Introduction
2.2 Experimental
2.2.1 Preparation of the cerium oxide
2.2.2 Fabrication of CeO2-SiC membranes
2.2.3 Characterization
2.3 Results and Discussion
2.4 Conclusion
Chapter 3. Hydrogen Permeation of SiC-CeO2 Composite Membrane by Dip-coating Process
3.1 Introduction
3.2 Experimental
3.2.1 Preparation of the CeO2 sol solution
3.2.2 Fabrication of the SiC-CeO2 membrane by dip-coating process
3.2.3 Characterization and Gas permeation test
3.3 Results and Discussion
3.4 Conclusion
Chapter 4. Fabrication and Characterization of CeO2-NiO/SiC Membranes for Hydrogen Permeation
4.1 Introduction
4.2 Experimental
4.2.1 Preparation of CeO2-NiO mixed oxides
4.2.2 Fabrication of CeO2-NiO/SiC composites membrane
4.2.3 Characterization
4.3 Results and Discussion
4.4 Conclusion
Reference
논문개요
- Degree
- Master
- Publisher
- 성신여자대학교 일반대학원
- 파일 목록
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