金催化劑進行甲醇重組反應來製造氫氣

Hydrogen Production by Reforming of Methanol over Au Catalysts

林秋杏(Chiu-Hsing Lin)

指導教授 ： 葉君棣

國立清華大學/理學院/化學系/碩士(2006年)

https://doi.org/10.6843/NTHU.2006.00545

摘要

本研究以沉積沉澱法 (deposition precipitateon method) 製備以氧化鋅為支撐物的金催化劑。並利用XRD、TEM、ICP、TPR等方法來鑑定催化劑的物理與化學特性。並將製備好的催化劑用於催化甲醇重組反應: 反應包括部分氧化反應 (partial oxidation of methanol POM)、蒸氣重組反應 (steam reforming of methanol，SRM)、氧化性蒸氣重組反應 (oxidative steam reforming of methanol，OSRM)。
金催化劑用於催化SRM與OSRM的效果不佳，但在催化POM上則有良好的活性。以表面積為43 m2/g的氧化鋅為支撐物並添加1%鈰的金催化劑，於POM反應中擁有最佳的活性表現，在反應溫度(reaction temperature，TR )為150℃時，CMeOH = 86％，SH2 = 88％，SCO2 = 98％。
為了使POM反應可在不需要額外加熱時，就有良好的活性表現，我們將通過金催化劑的甲醇量提高為原來的1.5倍來進行反應。結果證實此方式可將反應溫度維持於120℃，並且擁有良好的活性，CMeOH = 90％，SH2 = 91％，SCO2 = 98％。

關鍵字

沉積沉澱法 ； 金催化劑 ； 甲醇部分氧化反應 ； 甲醇蒸氣重組反應

並列摘要

In this study, supported of Au2/Zn or Au2Cex/Zn samples were prepared by deposition precipitation method. All samples were characterized by XRD, TEM, ICP and TPR measurements. These catalysts were applied for reforming of methanol reactions, including partial oxidation of methanol (POM), steam reforming of methanol (SRM) and oxidative steam reforming of methanol (OSRM).
Au/Zn catalysts were not active for SRM and OSRM reactions, but active for POM reaction. Au2Ce1/Zn supported on ZnO with surface area of 43 m2/g shows the best performance (CMeOH = 86％, SH2 = 88％, SCO2 = 98％) of POM at TR = 150℃.
When the amount of methanol is increased by 1.5 times in POM reaction for Au2Ce1/Zn catalyst, the reaction temperature could maintain at 120℃ without an additional heater. Moreover, there is a excellent performance (CMeOH = 90％, SH2 = 91％, SCO2 = 97.3％) of POM reaction at 120℃.

並列關鍵字

deposition precipitateon method ； Au catalyst ； partial oxidation of methanol POM ； steam reforming of methanol，SRM

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