Experimental Investigation of the Interaction of Dimethyl Sulfide/Ethyl Mercaptan with Nano-Manganese Dioxide

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• 作者：Jie He ; Xiaotian Liu ; Lin Li ; Bin Wang ; Jinsong Hu
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2012
• 出版时间：December 12, 2012
• 年：2012
• 卷：51
• 期：49
• 页码：15912-15917
• 全文大小：369K
• 年卷期：v.51,no.49(December 12, 2012)
• ISSN：1520-5045

文摘

Nano-MnO₂ was prepared by a sol鈥揼el technology, and the structure was characterized by means of powder X-ray diffraction (XRD). The interaction of dimethyl sulfide (DMS) or ethyl mercaptan (EM) with the as-prepared MnO₂ was investigated at ambient temperature with Fourier transform infrared (FT-IR) spectroscopy, X-ray photoelectron spectroscopy (XPS), and laser Raman spectroscopy (LRS). The results showed that DMS and EM undergo different interactions with the surface of MnO₂. The interaction of DMS and MnO₂ bring about carbon鈥搒ulfur bond cleavage and the oxidation of C. However, there might be hydrogen bonding between EM and MnO₂ in addition to chemical bonding, which results in a weaker S鈥揌 bond in the EM molecule, so that EM is easily oxidized to sulfonates and sulfates. Tentative interaction mechanisms for DMS and EM on MnO₂ are suggested.