DC Field | Value | Language |
---|---|---|
dc.contributor.advisor | Lee, Jae W. | - |
dc.contributor.advisor | 이재우 | - |
dc.contributor.author | Kim, Yikyeom | - |
dc.date.accessioned | 2021-05-12T19:37:18Z | - |
dc.date.available | 2021-05-12T19:37:18Z | - |
dc.date.issued | 2020 | - |
dc.identifier.uri | http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=910835&flag=dissertation | en_US |
dc.identifier.uri | http://hdl.handle.net/10203/284040 | - |
dc.description | 학위논문(석사) - 한국과학기술원 : 생명화학공학과, 2020.2,[iii, 31 p. :] | - |
dc.description.abstract | The chemical looping dry reforming of methane can be used to convert greenhouse gases into products with much desirable specification. However, developing an oxygen carrier with coke-tolerance and high oxygen exchange rate usually requires the use of rare-earth metals or lanthanides. In this study, by utilizing deposited surface carbon as a reaction intermediate rather than suppressing it, complete methane conversion was possible even with the earth-abundant metal oxide particles. To establish an optimized $H_2$/CO ratio for the hydrocarbon synthesis, the $CH_4$ feedstock was partially replaced with $CO_2$. By itself, Ni-Al oxide exhibited deactivation due to the agglomeration arising from methane decomposition over the redox cycle. Fe-Al oxide had stable performance over cycles, but a sudden performance decline was observed when the amount of $CO_2$ co-feeding exceeded a certain point. Incorporating Ni into the Fe-Al oxide was found to overcome these problems. The formation of a spinel phase with Fe alleviated the agglomeration, and enhanced $CH_4$ activation under high $CO_2$ partial pressure. The introduction of Ni also improved carbon gasification kinetics with $CO_2$. | - |
dc.language | eng | - |
dc.publisher | 한국과학기술원 | - |
dc.subject | Chemical looping dry reforming▼aMethane decomposition▼a$CO_2$ carbon gasfication▼aPhase segregation | - |
dc.subject | 매체순환식 건식개질▼a메탄분해반응▼a탄소가스화반응▼a상분리 | - |
dc.title | Simultaneous syngas and carbon monoxide production using combined dry reforming and decomposition of methane | - |
dc.title.alternative | 메탄분해반응 및 매체순환식 건식개질을 이용한 합성가스 및 일산화탄소의 생산 | - |
dc.type | Thesis(Master) | - |
dc.identifier.CNRN | 325007 | - |
dc.description.department | 한국과학기술원 :생명화학공학과, | - |
dc.contributor.alternativeauthor | 김이겸 | - |
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