DC Field | Value | Language |
---|---|---|
dc.contributor.advisor | 유룡 | - |
dc.contributor.author | Lee, Seungjun | - |
dc.contributor.author | 이승준 | - |
dc.date.accessioned | 2024-07-26T19:31:28Z | - |
dc.date.available | 2024-07-26T19:31:28Z | - |
dc.date.issued | 2021 | - |
dc.identifier.uri | http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=1051997&flag=dissertation | en_US |
dc.identifier.uri | http://hdl.handle.net/10203/321113 | - |
dc.description | 학위논문(박사) - 한국과학기술원 : 화학과, 2021.2,[vi, 95 p. :] | - |
dc.description.abstract | Methanol steam reforming is an attractive route to on-board H$_2$ production for fuel cell vehicles, except for the problem of CO byproduct poisoning the fuel-cell electrode. Herein, we show that the CO generation can be lowered remarkably when the reforming reaction is carried out over a bimetallic PdIn catalyst supported on nanoporous silica gel. The Pd-In/silica was prepared by following a conventional impregnation process using aqueous solution of tetraamminepalladium and indium nitrates simultaneously. The In/Pd molar ratio was varied over 0 ~ 4 at a fixed Pd loading of 2 wt%. Among the Pd-In samples prepared in this manner, the sample with In/Pd = 2.5 exhibited the best catalytic performance with negligible CO production at 300 °C, which was superior to that of Pd-In/γ-alumina or Pd-In/MCM-48 mesoporous silica of the same metal loading. Characterization of this catalyst by atomic-resolution transmission electron microscopy indicated that the low CO generation (i.e., high CO$_2$/CO selectivity) is due to the formation of Pd1In1 intermetallic compound-type alloy nanoparticles. Temperature-programmed reduction of the catalytic metal precursors with H2 suggested that the alloy formation could be promoted by the surface silanol groups existing on silica. | - |
dc.language | eng | - |
dc.publisher | 한국과학기술원 | - |
dc.subject | 이원금속 촉매▼a담지 촉매▼a나노다공성 물질▼a촉매적 개질▼a실란올 그룹 | - |
dc.subject | Bimetallic catalyst▼aSupported catalyst▼aNanoporous material▼aCatalytic reforming▼aSilanol group | - |
dc.title | Catalytic properties of bimetallic catalyst for methanol steam reforming | - |
dc.title.alternative | 이원금속 촉매의 메탄올 수증기 개질 반응 촉매 특성 연구 | - |
dc.type | Thesis(Ph.D) | - |
dc.identifier.CNRN | 325007 | - |
dc.description.department | 한국과학기술원 :화학과, | - |
dc.contributor.alternativeauthor | Ryoo, Ryong | - |
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