A safe and clean way to produce H2O2 from H2 and O2 within the explosion limit range |
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| Affiliation: | 1. State Key Laboratory of Safety and Control for Chemicals, 218 Yan''an 3rd Road, Qingdao, 266000, China;2. SINOPEC Research Institute of Safety Engineering, 339 Songling Road, Qingdao, 266071, China;3. Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, Sichuan, China;1. Institut Charles Gerhardt (ICG), UMR-5253, CNRS, UM, ENSCM, Ingénierie et Architectures Macromoléculaires (IAM), Matériaux Avancés pour la Catalyse et la Santé (MACS), Ecole Nationale Supérieure de Chimie, 8 rue de l’Ecole Normale, 34296 Montpellier Cedex 5, France;2. Institut Européen des Membranes, UMR-5635, CNRS, ENSCM, UM, CC047, Université de Montpellier, Place Eugène Bataillon, 34095 Montpellier Cedex 5, France;3. Università di Messina, ERIC aisbl and CASPE/INSTM, Sect. Industrial Chemistry, V.le F. Stagno D''Alcontres 31, 98166 Messina, Italy;4. Institut de Chimie Séparative de Marcoule (ICSM), UMR-5257, CEA, CNRS, UM, ENSCM, Centre de Marcoule, BP 17171, 30207 Bagnols sur Cèze Cedex, France;1. Dipartimento di Scienze Chimiche, Università degli Studi di Padova via Marzolo 8, I35131 Padova, Italy;2. Department of Chemical Engineering, Laboratory of Industrial Chemistry and Reaction Engineering, Process Chemistry Centre (PCC), Åbo Akademi University, Biskopsgatan 8, FI-20500 Åbo-Turku, Finland;3. Department of Chemistry, Technical Chemistry, Chemical-Biochemical Centre (KBC), Umeå University, UMEÅ, SE-90187, Sweden;4. Department of Electrical Engineering, Faculty of Technology, Microelectronics and Materials Physics Laboratories, EMPART Research Group of Infotech Oulu, University of Oulu, FI-90014 Oulu, Finland;1. High Pressure Processes Group, Department of Chemical Engineering and Environmental Tech., University of Valladolid, 47011 Valladolid, Spain;2. Industrial Chemistry and Reaction Engineering Department, Åbo Akademi University, FI-20500 Turku/Åbo, Finland;3. Department of Chemistry, Chemical-Biochemical Centre (KBC), Technical Chemistry, Umeå University, SE-90187 Umeå, Sweden;1. Department of Chemical and Biological Engineering, Korea University, 145 Anam-ro, Seoul 02841, Republic of Korea;2. Computational Science Research Center, Korea Institute of Science and Technology (KIST), Hwarangno 14-gil 5, Seoul 02792, Republic of Korea;3. Green School, Korea University, 145 Anam-ro, Seoul 02841, Republic of Korea |
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| Abstract: | The direct synthesis of hydrogen peroxide (DSH) from hydrogen and oxygen is an attractive production route due to its green nature. However, it faces multiple technical challenges, the biggest being the explosion risk of the flammable gas mixture. Herein we have used microreactors to perform the reaction in an inherently safer way which allows the hydrogen concentration to fall within the explosion limit range. For the first time, we have studied the flame propagation phenomena inside a microreactor to determine the optimum channel dimension for DSH. A mechanism of “fast synthesis and slow destruction” has been proposed via investigation on the influence of channel length and liquid flow rate. Besides, a variety of reaction parameters including gas flow rate, oxygen: hydrogen ratio, catalyst composition and gas pressure have been studied carefully. The successful employment of a microreactor in this case has indicated the potential of using microreactors to inhibit the explosion risks of hazardous processes. |
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| Keywords: | Direct synthesis Hydrogen peroxide Microreactor Explosion limit |
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