Synthesis and kinetics of highly energetic intermediates by micromixers / Nikolay Zaborenko in Industrial & engineering chemistry research, Vol. 49 N° 9 (Mai 2010)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 49 N° 9 (Mai 2010) . - pp. 4132–4139 Titre : Synthesis and kinetics of highly energetic intermediates by micromixers : direct multistep synthesis of sodium nitrotetrazolate Type de document : texte imprimé Auteurs : Nikolay Zaborenko, Auteur ; Edward R. Murphy, Auteur ; Jason G. Kralj, Auteur Année de publication : 2010 Article en page(s) : pp. 4132–4139 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Kinetics Micromixers Résumé : A modular silicon micromixer is designed and fabricated for high-flow rapid mixing at a wide range of reaction conditions. The mixer operates by splitting two inlet flows into a large number of channels, interdigitating them, and constricting the laminated flow to create submicrometer diffusion lengths. Mixing is quantified using the Villermaux−Dushman method, with UV−vis detection of the photoactive species, and compared against a commercial micromixer. Micromixers and tubing are then used to perform a quantitative kinetic study of the direct two-step synthesis of sodium nitrotetrazolate (NaNT) by a Sandmeyer type reaction via a reactive diazonium intermediate. Orders of reactions and temperature dependence of both steps, as well as pH and ionic strength dependence of the second step, are evaluated. Successful production of 4.4 g/h of NaNT in solution is ultimately achieved in a compact footprint using the kinetic data, verifying the potential for scaling to typical production amounts. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie100263p [article] Synthesis and kinetics of highly energetic intermediates by micromixers : direct multistep synthesis of sodium nitrotetrazolate [texte imprimé] / Nikolay Zaborenko, Auteur ; Edward R. Murphy, Auteur ; Jason G. Kralj, Auteur . - 2010 . - pp. 4132–4139. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 9 (Mai 2010) . - pp. 4132–4139 Mots-clés : Kinetics Micromixers Résumé : A modular silicon micromixer is designed and fabricated for high-flow rapid mixing at a wide range of reaction conditions. The mixer operates by splitting two inlet flows into a large number of channels, interdigitating them, and constricting the laminated flow to create submicrometer diffusion lengths. Mixing is quantified using the Villermaux−Dushman method, with UV−vis detection of the photoactive species, and compared against a commercial micromixer. Micromixers and tubing are then used to perform a quantitative kinetic study of the direct two-step synthesis of sodium nitrotetrazolate (NaNT) by a Sandmeyer type reaction via a reactive diazonium intermediate. Orders of reactions and temperature dependence of both steps, as well as pH and ionic strength dependence of the second step, are evaluated. Successful production of 4.4 g/h of NaNT in solution is ultimately achieved in a compact footprint using the kinetic data, verifying the potential for scaling to typical production amounts. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie100263p

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