2-Methylpyridine-N-oxidation runaway studies |
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| Authors: | L Saenz VH Carreto Vazquez L Liu WJ Rogers MS Mannan M Papadaki |
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| Institution: | 1. Mary Kay O''Connor Process Safety Center, Artie McFerrin Department of Chemical Engineering, Texas A&M University, College Station, TX 77843-3122, USA;2. Department of Environmental and Natural Resources Management, University of Ioannina, Seferi 2, Agrinio, GR 30100, Greece;1. University of Novi Sad, Faculty of Agriculture, 21000 Novi Sad, Trg Dositeja Obradovi?a 8, Serbia;2. Scientific-Technological Center, NIS-Naftagas, Put ?ajka?kog Odreda 9, Novi Sad, Serbia;3. Faculty of Technology, University of Novi Sad, Bul. cara Lazara 1, Novi Sad, Serbia;1. Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, People’s Republic of China;2. Graduate University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China;3. Geological Scientific Research Institute of Shengli Oilfield Company Limited, SINOPEC, Dongying 257015, Shandong, People’s Republic of China;1. Department of Virology, Toulouse University Hospital, Toulouse, France;2. Department of Physiopathology, Toulouse Purpan, Unité Inserm U563, Toulouse, France;1. INSERM, U1043, Centre de Physiopathologie de Toulouse Purpan, Toulouse F-31300, France;2. CHU Toulouse, Hôpital Purpan, Laboratoire de virologie, Institut fédératif de biologie de Purpan, F-31300, France |
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| Abstract: | Calorimetry has been used in order to identify the runaway behavior of 2-methylpyridine-N-oxidation (2-picoline-N-oxidation). Experiments were performed in an Automatic Pressure Tracking Adiabatic Calorimeter (APTAC), employing 2-methylpyridine-N-oxide (2-picoline-N-oxide) with or without catalyst, 2-methylpyridine-N-oxide, hydrogen peroxide, 2-methylpyridine (2-picoline) and catalyst, and 2-methylpyridine, hydrogen peroxide and catalyst. Approximately 16.5 g of aqueous solutions were used in 100 ml closed glass cells in all but one measurement. Measurements were performed isothermally or employing the Heat-Wait-Search (HWS) technique. During reaction runaway, any excess of hydrogen peroxide and the produced 2-methylpyridine-N-oxide decompose releasing non-condensable gases and raising the pressure. It was found that the reaction runaway is condition-sensitive. Catalyst, the presence of 2-picoline and/or its N-oxide, affect hydrogen peroxide and/or 2-picoline-N-oxide decomposition rates. Further research accompanied by analytical measurements of the gas and liquid phase would provide indications in regard to the decomposition mechanisms followed in those cases. |
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