DC Field | Value | Language |
---|---|---|
dc.contributor.advisor | Choi, Min Kee | - |
dc.contributor.advisor | 최민기 | - |
dc.contributor.author | Baek, Ho Yong | - |
dc.date.accessioned | 2021-05-11T19:32:20Z | - |
dc.date.available | 2021-05-11T19:32:20Z | - |
dc.date.issued | 2019 | - |
dc.identifier.uri | http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=875279&flag=dissertation | en_US |
dc.identifier.uri | http://hdl.handle.net/10203/282985 | - |
dc.description | 학위논문(석사) - 한국과학기술원 : 생명화학공학과, 2019.8,[ii, 24 p. :] | - |
dc.description.abstract | Partial hydrogenation of alkynes to alkenes is an important catalytic process in various industry and also key model reaction for fundamental investigation of chemoselectivity in heterogeneous catalysis. Polymer supported catalysts have attracted increasing attention as a means of achieving enhanced activity, selectivity, and stability. However, coexistence of Pd single atoms and nanoparticles on the supports made the systematic investigation of the catalysts difficult. In this research, we successfully synthesized two catalysts where either Pd single atoms or nanoparticles are selectively formulated on the polymer supports. When heat is provided, both Pd atoms and nanoparticles are embedded into polymer network via dynamic motions of the polymer chains. Pd nanoparticles show much higher catalytic activity than single atoms in acetylene partial hydrogenation. Polymer chains surrounding Pd nanoparticles act as a ‘molecular gate’ which enables discriminative adsorption and hydrogenation of alkyne over alkene, resulting in high alkene selectivity. The enhanced alkene selectivity and initial conversion of the polymer supported nanoparticles were retained over a long reaction period, which is speculated to be due to an immediate removal of coke precursor from Pd surface by the polymer chains. | - |
dc.language | eng | - |
dc.publisher | 한국과학기술원 | - |
dc.subject | Alkyne partial hydrogenation▼apolymer support▼aPd single atom▼aPd nanoparticle▼aembedment | - |
dc.subject | 알카인 선택적 수소화 반응▼a고분자 담지체▼a팔라듐 단일 원자▼a팔라듐 나노 입자▼a아세틸렌 수소화 반응 | - |
dc.title | Investigation of different catalytic behaviors of Pd single atoms and nanoparticles on sulfur-containing polymer support | - |
dc.title.alternative | 황을 포함한 고분자 담체에서 팔라듐 단일 원자와 나노 입자의 촉매 거동에 관한 연구 | - |
dc.type | Thesis(Master) | - |
dc.identifier.CNRN | 325007 | - |
dc.description.department | 한국과학기술원 :생명화학공학과, | - |
dc.contributor.alternativeauthor | 백호용 | - |
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