Adsorption of C3 Alcohols, 1-Butanol, and Ethene on Platinized Platinum As Studied with FTIRS and DEMS
Adsorption of C3 Alcohols, 1-Butanol, and Ethene on Platinized Platinum As Studied with FTIRS and DEMS
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使用 FTIRS 和 DEMS 研究 C3 醇、1-丁醇和乙烯在镀铂铂上的吸附
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发表时间：
1997
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通讯作者：
V. Veen
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作者：
J. Gootzen;Ah Ad Wonders;W. Visscher;V. Veen
用傅里叶变换红外光谱（FTIRS）和差示电化学质谱（DEMS）研究了高氯酸溶液中C3醇、正丁醇和乙烯在铂化铂上的不可逆吸附。除了2-丙醇，所有研究的醇显示C-C（O）解离吸附作为唯一的途径，在形成不可逆的吸附活性。1，2，3-丙三醇是唯一的化合物，完全转化为吸附的CO，而所有其他伯醇产生烃吸附物种除了CO。没有进一步的C-C键断裂观察到这些烃吸附物种，这被发现是高度脱氢。烃类物质可以从表面分馏氢化以形成相应的气态化合物。2-丙醇和未发生goC-C解离形成CO2的乙醇明显减少。对于2-丙醇和乙烯，发现少量的氧掺入发生在C1位，然后脱羰形成CO。
The irreversible adsorption of several C3 alcohols, 1-butanol, and ethene on platinized platinum has been studied with Fourier transform IR spectroscopy (FTIRS) and differential electrochemical mass spectrometry (DEMS) in perchloric acid electrolyte. Apart from 2-propanol, all studied alcohols display C-C(O) dissociative adsorption as the only pathway active in the formation of irreversible adsorbates. 1,2,3-Propanetriol is the only compound that is fully converted to adsorbed CO, while all other primary alcohols generate hydrocarbon adspecies in addition to CO. No further C-C bond breaking is observed in these hydrocarbon adspecies, which were found to be highly dehydrogenated. The hydrocarbon species can be fractionally hydrogenated off the surface to form corresponding gaseous compounds. 2-Propanol andethenedonotundergoC-CdissociationtoformCObutaredehydrogenatedconsiderably. For2-propanol and ethene it was found that a small amount of oxygen incorporation occurs on the C1 position, followed by decarbonylation to form CO.