Sodium nitrate modified SBA-15 and fumed silica for efficient production of acrylic acid and 2,3-pentanedione from lactic acid |
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| Affiliation: | 1. Key Laboratory of Mesoscopic Chemistry, MOE, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China;2. Department of Chemistry, Hong Kong Baptist University, Kowloon Tong, Hong Kong;1. Department of Chemical Engineering, Faculty of Engineering, Ferdowsi University of Mashhad, Mashhad, Iran;2. Research Center of Membrane Processes and Membrane, Faculty of Engineering, Ferdowsi University of Mashhad, Mashhad, Iran;3. Department of Microbiology, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran;1. Key Laboratory of Ionic Liquid Clean Process, State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR China;2. University of Chinese Academy of Sciences, Beijing 100190, PR China;1. World Class University Program of Chemical Convergence for Energy & Environment, Institute of Chemical Processes School of Chemical and Biological Engineering, Seoul National University, Seoul 151-742, Republic of Korea;2. Department of Chemical Engineering, University of Seoul, Seoul 130-743, Republic of Korea;1. Institut de Recherches sur la Catalyse et l’Environnement de Lyon, IRCELYON, UMR5256 CNRS-Université Claude Bernard Lyon 1, 2 avenue A. Einstein, F-69626 Villeurbanne Cedex, France;2. Laboratoire Catalyse et Spectrochimie EnsiCaen CNRS-Unicaen, 6 boulevard Maréchal Juin, 14050 Caen Cedex, France;3. Adisseo France SAS, Antony Parc 2, 10 Place du Général de Gaulle, F-92160 Antony, France |
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| Abstract: | The catalytic conversion of lactic acid to acrylic acid and 2,3-pentanedione over sodium nitrate-supported mesoporous SBA-15 and fumed silica was studied. The yields of acrylic acid, 2,3-pentanedione, and acetaldehyde are 44.8%, 25.1%, and 13.3%, respectively, over the 23%NaNO3/SBA-15 catalyst. The performance of the catalysts is strongly affected by NaNO3 loading, catalyst texture and porosity, and product diffusion efficiency. A proper control of NaNO3 loading can result in modification catalyst structure for improvement of 2,3-pentanedione selectivity. Under certain reaction conditions, the surface NaNO3 species can readily transform to sodium lactate that functions as active component to catalyze the target reactions. |
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| Keywords: | Sodium nitrate SBA-15 Lactic acid Acrylic acid 2 3-Pentanedione |
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