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硫酚类化合物的电氧化偶联
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作者 陈洪来 《云南化工》 CAS 2006年第4期20-22,共3页
以K I-NaI为间接电解质,以丙酮为溶剂,用间接电氧化的方法对硫酚类化合物进行偶联反应研究。
关键词 硫酚类化合物 KI—NaI 丙酮 间接电氧化 偶联反应
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Hydrodeoxygenation of Phenolic Model Compounds over MoS2 Catalysts with Different Structures 被引量:18
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作者 杨运泉 罗和安 +2 位作者 童刚生 Kevin J. Smith TYE Ching Thian 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2008年第5期733-739,共7页
Several MoS2 catalysts of different structure, prepared by in situ decomposition of ammonium heptamolybdate (AHM) and molybdenum naphthenate (MoNaph), and by MoS2 exfoliation (TDM), were characterized by BET, X-... Several MoS2 catalysts of different structure, prepared by in situ decomposition of ammonium heptamolybdate (AHM) and molybdenum naphthenate (MoNaph), and by MoS2 exfoliation (TDM), were characterized by BET, X-ray diffraction (XRD), Energy Dispersive X-ray (EDX) and transmission electron microscopy (TEM). The analysis showed that MoS2 structure was dependant upon the preparation procedure. The activity of the catalysts was determined by measuring the hydrodeoxygenation (HDO) of phenol, 4-methylphenol and 4-methoxyphenol using a batch autoclave reactor operated at 2.8 MPa of hydrogen and temperatures ranging from 320-370℃. By comparing the conversion, the reactivity order of the catalysts was: AHM〉TDM-D〉MoNaph〉thermal〉MoS2 powder〉 TDM-W. Also, the effect of reaction temperature on the HDO conversion was explained in terms of equilibrium of reversible reaction kinetics. The main products of the HDO for phenolic compounds were identified by gas chromatography/mass spectrometry (GC/MS). The results showed that the product distribution and the HDO selectivity were correlated with the reaction temperature. Two parallel reaction routes, direct hydrogenolysis and combined hydrogenation-hydrogenolysis, were confirmed by the analysis of the product distribution. High temperature favored hydrogenolysis over hydrogenation for HDO of phenol and 4-methoxyphenol, whereas for 4-methylphenol the reverse was true. 展开更多
关键词 ammonium heptamolybdate derived MoS2 structure effect characterization HYDRODEOXYGENATION REACTIVITY product distribution
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