Documents disponibles écrits par cet auteur

Butene oligomerization over phosphoric acid / Riaan Bekker in Industrial & engineering chemistry research, Vol. 48 N° 22 (Novembre 2009) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 48 N° 22 (Novembre 2009) . - pp. 10156–10162 Titre : Butene oligomerization over phosphoric acid : structural characterization of products Type de document : texte imprimé Auteurs : Riaan Bekker, Auteur ; Nicolaas M. Prinsloo, Auteur Année de publication : 2010 Article en page(s) : pp. 10156–10162 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : Butene  oligomerate  Posphoric  acid  GC-MS  techniques Résumé : In this study, the butene oligomerate produced over solid (SPA) and liquid phosphoric acid (LPA) was analyzed in detail using GC-MS techniques in conjunction with reported retention time data to identify the alkene isomers in the C6 to C8 fractions produced by the reaction. This information was used to quantify the oligomerate produced over liquid and solid phosphoric catalysts at different temperatures to identify subtle differences between the product distributions. It is hoped that this information will assist in future studies of the oligomerization reaction since several interesting trends that can be linked to previously proposed mechanisms were observed. Group classification of the identified alkenes according to the number of branches identified tetrasubstituted alkenes as compounds that form in large amounts during the reaction, but these are also removed through cracking faster than the other classes at higher temperatures. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie900210q [article] Butene oligomerization over phosphoric acid : structural characterization of products [texte imprimé] / Riaan Bekker, Auteur ; Nicolaas M. Prinsloo, Auteur . - 2010 . - pp. 10156–10162. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 48 N° 22 (Novembre 2009) . - pp. 10156–10162 Mots-clés : Butene  oligomerate  Posphoric  acid  GC-MS  techniques Résumé : In this study, the butene oligomerate produced over solid (SPA) and liquid phosphoric acid (LPA) was analyzed in detail using GC-MS techniques in conjunction with reported retention time data to identify the alkene isomers in the C6 to C8 fractions produced by the reaction. This information was used to quantify the oligomerate produced over liquid and solid phosphoric catalysts at different temperatures to identify subtle differences between the product distributions. It is hoped that this information will assist in future studies of the oligomerization reaction since several interesting trends that can be linked to previously proposed mechanisms were observed. Group classification of the identified alkenes according to the number of branches identified tetrasubstituted alkenes as compounds that form in large amounts during the reaction, but these are also removed through cracking faster than the other classes at higher temperatures. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie900210q