Investigating of synthesis parameters, kinetics and pilot plant of sodium sarcosinate / Masoumeh Hassanzadeh in TENSIDE, SURFACTANTS, DETERGENTS, Vol. 49, N° 6 (11-12/2012)

[article]  inTENSIDE, SURFACTANTS, DETERGENTS > Vol. 49, N° 6 (11-12/2012) . - p. 494-497 Titre : Investigating of synthesis parameters, kinetics and pilot plant of sodium sarcosinate Type de document : texte imprimé Auteurs : Masoumeh Hassanzadeh, Auteur ; Masoud Kambarani, Auteur ; Reza Saghafi, Auteur ; Hedieh Dezfouli, Auteur Année de publication : 2012 Article en page(s) : p. 494-497 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Surfactants Tags : 'Surfactant  anionique'  'Dérivé  glycine'  'Réaction  amidation' Index. décimale : 668.1 Agents tensioactifs : savons, détergents Résumé : Sodium sarcosinate, an anionic surfactant, is known as a methylated glycine derivative, that is synthesized in a one-step amidation reaction. In this work, to find out the best conditions, several experiments carried out. So, the highest yield was obtained at (30±3) °C, by gradual addition of sodium monochloro acetate to methylamine solution. The total reaction time is 6 hours. Based on data, and the plots of kinetics of the reaction, a second-order reaction equation was suggested for this synthesis reaction. The rate constant (?), and the regression coefficient (R2) were found as 0.0085 and 0.0934, respectively, which were in the best agreement with second-order reactions. According to the results, these data were applied for scale up laboratory to pilot phase. In addition, an industrial plant was suggested and designed. Note de contenu : - DISCUSSION : Influence of molar ratio of methylamine to sodium monochloro acetate - Influence of temperature - Influence of time - Influence of addition condition - Removing excess amine - KINETICS - SCALE-UP EXPERIMENTAL DATA TO PILOT PLANT DOI : 10.3139/113.110222 Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=16537 [article]

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Synthesis of quaternary derivatives of ortho-coco di-amido toluene and investigation of these compounds as cationic bitumen emulsifier / Masoumeh Hassanzadeh in TENSIDE, SURFACTANTS, DETERGENTS, Vol. 49, N° 3 (04-05/2012)

[article]  inTENSIDE, SURFACTANTS, DETERGENTS > Vol. 49, N° 3 (04-05/2012) . - p. 247-251 Titre : Synthesis of quaternary derivatives of ortho-coco di-amido toluene and investigation of these compounds as cationic bitumen emulsifier Type de document : texte imprimé Auteurs : Masoumeh Hassanzadeh, Auteur ; Leila Tayebi, Auteur ; Hedieh Dezfouli, Auteur ; Masoud Kambarani, Auteur ; Parviz Ahmadi Awal, Auteur Année de publication : 2012 Article en page(s) : p. 247-251 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Surfactants Tags : 'Emulsion  bitume'  Emulsifiant  Surfactant  'O-cocodi-amidotoluène  quaternisé' Index. décimale : 668.1 Agents tensioactifs : savons, détergents Résumé : Bitumen emulsions are preferred over conventional pavement systems due to their biologically and environmentally acceptable formulation, safety, low viscosity, storage stability, and cost effectiveness. The present investigation deals with the systematic study to synthesize ortho-cocodi-amido toluene and four quaternary derivatives by amidation of coconut oil and ortho toluene diamine (OTD), followed by quaternization with formaldehyde, formic acid mixture, and acrylonitrile, resulted in a new quaternary compound useful as cationic emulsifier in bitumen emulsions. The roles of temperature and reaction time in determining optimum conditions were investigated as well. Emulsifying behavior of these quaternary compounds was studied by sieve residue test, settlement and storage stability test of emulsified asphalt, and water solubility. The results show that the acrylonitrile imidazolinium derivative of o-cocodi-amido toluene (VI) can be used as a rapid-medium setting emulsifier. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=14914 [article]

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