吳紀聖2006-07-252018-06-282006-07-252018-06-281998http://ntur.lib.ntu.edu.tw//handle/246246/9181本研究是以特性檢測及催化氧化，來探討前一年所製備的支撐式鉑觸媒(supported-Pt catalyst)。觸媒是使用疏水型 的高分子以及活性碳為載體(support)。以臨界沾濕法(incipient wetness)在高分子及活性碳載體上製作高分散相之鉑觸媒，而後進行苯及甲苯氧化反應。以XPS 觀察觸媒表面鉑之化學狀態，發現鉑參與反應時有 還原態及氧化態，在使用Mars-van Krevelenmechanism 模式後，可求出Redox 反應常數，發現疏水型載體在活性基(active sites) 被還原階段，由於水分子可以被排除，因 此反應速率可以增加，所以可在較低溫達到完全氧化苯及甲苯。The research was to perform the characterization and catalytic oxidation of hydrophobic-supported Pt catalysts which were prepared in the last project. Highly Pt dispersed catalysts were prepared by incipient wetness method using polymer (SDB) and activated carbon as supports. Oxidation was carried out by the deep oxidation of benzene and toluene in air. The chemical status of Pt was revealed by XPS (X-ray induced photoelectron spectrum). A redox mechanism was proposed and the kinetic constants were calculated based on Mars-van Krevelen mechanism. The results indicated that moistures from atmosphere and oxidation would not be condensed on the pores/ surface due to hydrophobic surface. Thus the activity of catalyst was enhanced. The oxidation of benzene and toluene could be at lower temperatures.application/pdf57268 bytesapplication/pdfzh-TW國立臺灣大學化學工程學系暨研究所疏水性載體鉑揮發性有機物催化氧化特性檢測hydrophobic supportPtVOCcatalytic oxidationCharacterizationreporthttp://ntur.lib.ntu.edu.tw/bitstream/246246/9181/1/872214E002033.pdf