Documents disponibles écrits par cet auteur

Activation of hydrogen peroxide by an Fe-TAML complex in strongly alkaline aqueous solution / Evan S. Beach in Industrial & engineering chemistry research, Vol. 48 N° 15 (Août 2009) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 48 N° 15 (Août 2009) . - pp. 7072–7076 Titre : Activation of hydrogen peroxide by an Fe-TAML complex in strongly alkaline aqueous solution : homogeneous oxidation catalysis with industrial significance Type de document : texte imprimé Auteurs : Evan S. Beach, Auteur ; Jennifer L. Duran, Auteur ; Sujin K. Horwitz, Auteur Année de publication : 2009 Article en page(s) : pp. 7072–7076 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : Hydrogen  peroxide  Fe-TAML  catalysts  Aqueous  solutions Résumé : Hydrogen peroxide is activated by homogeneous Fe-TAML catalysts in aqueous solutions containing very high levels of sodium hydroxide, sodium aluminate, and other inorganic salts. Under these conditions, the Fe-TAML catalyst system facilitates oxidation of humic and humic-derived compounds under ambient conditions and efficiently uses catalyst and oxidant. Darkly colored process liquor from aluminum refining (Bayer liquor) is decolorized by 40−70% (in the wavelength range 450−650 nm) in just 5 min. Humic substances and phenolic species were targeted by the oxidation process. In addition to color reduction, Fe-TAML/H2O2 in 5 M NaOH can also extensively degrade the five- or six-carbon polyols, mannitol, sorbitol, dulcitol, xylitol, and adonitol. This is the first time Fe-TAML catalysts have been shown to activate degradation of carbohydrate alcohols. We show that mannitol, a nuisance contaminant in alumina production, can be oxidized at millimolar levels in process liquor containing a wide variety of other organic components at high background concentrations. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie9005723 [article] Activation of hydrogen peroxide by an Fe-TAML complex in strongly alkaline aqueous solution : homogeneous oxidation catalysis with industrial significance [texte imprimé] / Evan S. Beach, Auteur ; Jennifer L. Duran, Auteur ; Sujin K. Horwitz, Auteur . - 2009 . - pp. 7072–7076. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 48 N° 15 (Août 2009) . - pp. 7072–7076 Mots-clés : Hydrogen  peroxide  Fe-TAML  catalysts  Aqueous  solutions Résumé : Hydrogen peroxide is activated by homogeneous Fe-TAML catalysts in aqueous solutions containing very high levels of sodium hydroxide, sodium aluminate, and other inorganic salts. Under these conditions, the Fe-TAML catalyst system facilitates oxidation of humic and humic-derived compounds under ambient conditions and efficiently uses catalyst and oxidant. Darkly colored process liquor from aluminum refining (Bayer liquor) is decolorized by 40−70% (in the wavelength range 450−650 nm) in just 5 min. Humic substances and phenolic species were targeted by the oxidation process. In addition to color reduction, Fe-TAML/H2O2 in 5 M NaOH can also extensively degrade the five- or six-carbon polyols, mannitol, sorbitol, dulcitol, xylitol, and adonitol. This is the first time Fe-TAML catalysts have been shown to activate degradation of carbohydrate alcohols. We show that mannitol, a nuisance contaminant in alumina production, can be oxidized at millimolar levels in process liquor containing a wide variety of other organic components at high background concentrations. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie9005723

Knowledge sharing in global virtual team collaboration / Sujin K. Horwitz in Knowledge management research and practice, Vol. 10 N° 4 (Décembre 2012) 

Public ISBD [article]  in Knowledge management research and practice > Vol. 10 N° 4 (Décembre 2012) . - pp. 342-353 Titre : Knowledge sharing in global virtual team collaboration : Applications of CE and thinkLets Type de document : texte imprimé Auteurs : Sujin K. Horwitz, Auteur ; Cecilia Santillan, Auteur Année de publication : 2013 Article en page(s) : pp. 342-353 Note générale : Management Langues : Anglais (eng) Mots-clés : Knowledge  sharing  Global  virtual  teams  Collaboration  engineering  ThinkLets Résumé : Although a global virtual team (GVT) can provide organizations with increased competitive advantages and greater flexibility due to its unique ability to transcend traditional boundaries of time, locations, and organizational constraints, knowledge sharing in globally dispersed and culturally diverse members also poses unique challenges to organizations wishing to capitalize on diverse knowledge of GVTs. This work, therefore, examines extant literature on collaboration engineering (CE) and thinkLets and further proposes that CE and thinkLets can help organizations develop predictable patterns of knowledge-sharing behaviour and a sense of structure in GVT collaboration. Implications of using CE and thinkLets for organizational practice and research are also discussed in the virtual collaboration context. ISSN : 1477-8238 En ligne : http://www.palgrave-journals.com/kmrp/journal/v10/n4/abs/kmrp201239a.html [article] Knowledge sharing in global virtual team collaboration : Applications of CE and thinkLets [texte imprimé] / Sujin K. Horwitz, Auteur ; Cecilia Santillan, Auteur . - 2013 . - pp. 342-353. Management Langues : Anglais (eng) in Knowledge management research and practice > Vol. 10 N° 4 (Décembre 2012) . - pp. 342-353 Mots-clés : Knowledge  sharing  Global  virtual  teams  Collaboration  engineering  ThinkLets Résumé : Although a global virtual team (GVT) can provide organizations with increased competitive advantages and greater flexibility due to its unique ability to transcend traditional boundaries of time, locations, and organizational constraints, knowledge sharing in globally dispersed and culturally diverse members also poses unique challenges to organizations wishing to capitalize on diverse knowledge of GVTs. This work, therefore, examines extant literature on collaboration engineering (CE) and thinkLets and further proposes that CE and thinkLets can help organizations develop predictable patterns of knowledge-sharing behaviour and a sense of structure in GVT collaboration. Implications of using CE and thinkLets for organizational practice and research are also discussed in the virtual collaboration context. ISSN : 1477-8238 En ligne : http://www.palgrave-journals.com/kmrp/journal/v10/n4/abs/kmrp201239a.html