博碩士論文 973204034 完整後設資料紀錄

DC 欄位 語言
DC.contributor化學工程與材料工程學系zh_TW
DC.creator王志煒zh_TW
DC.creatorChih-wei Wangen_US
dc.date.accessioned2010-8-2T07:39:07Z
dc.date.available2010-8-2T07:39:07Z
dc.date.issued2010
dc.identifier.urihttp://ir.lib.ncu.edu.tw:88/thesis/view_etd.asp?URN=973204034
dc.contributor.department化學工程與材料工程學系zh_TW
DC.description國立中央大學zh_TW
DC.descriptionNational Central Universityen_US
dc.description.abstract氫氣為燃料電池主要的能量來源,多採碳氫化合物蒸汽重組為主,其中又以甲醇產氫系統最為簡單,適用於移動式供氫。甲醇產氫常見的反應有甲醇蒸汽重組(SRM)、甲醇部分氧化(POM)與複合式甲醇蒸汽重組(OSRM),其中SRM與OSRM反應產氫效率較高,CO選擇率低。 本實驗室過去產氫觸媒設計的研究以商業觸媒G66B(CuO/ZnO/Al2O3=30/60/10)成分為基礎,以共沉澱法製備不 同比例之CuO/ZnO/CeO2/ZrO2/Al2O3觸媒,進行SRM及OSRM反應,發現CeO2與Al2O3為負面影響,ZrO2則有不錯促進活性與增進穩定性的效果,但較高CuO負載量(大於30%)時ZrO2促進效果無法顯現,甚至有負面的效果,本研究固定CuO/ZnO/Al2O3觸媒中Al2O3含量為10 wt%,在不同CuO負載量(10~40 wt%)觸媒中引入不等量ZrO2取代部分ZnO,進行SRM及OSRM反應,藉以近一步探討ZrO2對CuO/ZnO/Al2O3觸媒的影響。研究發現ZrO2可提升觸媒的還原能力、分散性,也增進觸媒的穩定。DRFTIR分析發現ZrO2可增加甲醇吸附,適量添加可促進反應活性。觸媒中CuO/ZnO比值為影響觸媒活性的重要因素,CuO/ZnO比值小於0.8,ZrO2對觸媒活性有促進效果,如過量添加ZrO2取代ZnO,使CuO/ZnO比值大於0.8,減少 CuO/ZnO之間的交互周界,ZrO2的促進效果無法顯現,甚至對觸媒活性有負面影響。 zh_TW
dc.description.abstractAbstract The proton exchange membrane fuel cells (PEMFC) usually use hydrogen as feed, and the methanol hydrogenation which is the most simply hydrogen production system therefore the system also apply to onboard equipment. The steam reforming of methanol (SRM) and oxidative steam reforming of methanol (OSRM) are two of the best hydrogen production of methanol reaction. In our past research, commercial catalysts G66B (Nisson-Gridler) with weight ratio of 30/60/10 (CuO/ZnO/Al2O3) was used as a starting reference for designing CuO/ZnO/ZrO2/Al2O3 catalysts which were prepared by co-precipitation method for SRM and OSRM. We find out that the CeO2 and Al2O3 were negative to the catalyst activity, ZrO2 had excellent performance on catalytic activity and stability, nevertheless when high loading ZrO2 (above 30 wt %), the promotion of ZrO2 had disappeared. In this research, we fixed Al2O3 composition in the CuO/ZnO/ZrO2/Al2O3 catalyst as 10 wt%, and change the composition of rest of the species of catalyst, and introducing ZrO2 replace the partial ZnO in the catalyst test in SRM and OSRM reactions try to figure out the influence of ZrO2 in CuO/ZnO/Al2O3-based catalysts. ZrO2 could improve the catalytic reducibility and the copper dispersion on catalyst and increase the stability of catalyst, in DRIFT we also note the obvious evidence that ZrO2 could increase the methanol adsorption on catalyst. The CuO/ZnO ratio is extremely important to the catalytic activity, when the ratio is above 0.8, introducing ZrO2 show no improvement ,when the ratio below 0.8, introducing ZrO2 improve the catalytic activity and the stability. en_US
DC.subject產氫反應zh_TW
DC.subject銅觸媒zh_TW
DC.subject氧化鋯zh_TW
DC.subject甲醇蒸汽重組zh_TW
DC.subject複合式甲醇蒸汽重組zh_TW
DC.subjectsteam reforming of methanol(SRM)en_US
DC.subjectZrO2en_US
DC.subjectCopper catalysten_US
DC.subjectoxidative steam reforming of methanol(OSRM)en_US
DC.title甲醇於CuO/ZnO/ZrO2/Al2O3之SRM、OSRM產氫反應研究─ZrO2的影響zh_TW
dc.language.isozh-TWzh-TW
DC.titleSteam reforming and oxidative steam reforming of methanol over CuO/ZnO/ZrO2/Al2O3 ─ the influnce of ZrO2en_US
DC.type博碩士論文zh_TW
DC.typethesisen_US
DC.publisherNational Central Universityen_US

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