ZrO2 – MoO3 for the acetalization of 1,3 - propanediol from dilute solutions / Min Wu in Industrial & engineering chemistry research, Vol. 51 N° 18 (Mai 2012)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 51 N° 18 (Mai 2012) . - pp. 6304-6309 Titre : ZrO2 – MoO3 for the acetalization of 1,3 - propanediol from dilute solutions Type de document : texte imprimé Auteurs : Min Wu, Auteur ; Chun-long Li, Auteur ; Jin Zhang, Auteur Année de publication : 2012 Article en page(s) : pp. 6304-6309 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Dilute solution Résumé : A reactive isolation approach for the recovery of 1,3-propanediol (1,3-PD) from dilute aqueous solutions was performed on ZrO2―MoO3 solid heterogeneous catalysts through a cyclic reaction with aldehyde to form acetals (2-methyl-1,3-dioxane, 2MD). The effects of catalyst composition, reaction temperature, reaction time, and optimal dose on the conversion rates of acetalization and hydrolysis were investigated. For ZrO2―10 wt % MoO3 prepared by the precipitation―impregnation method, the conversion rate of 1,3-PD in acetalization reached 95.7% at 60 °C for 2 h, and the acetals conversion in the hydrolysis reaction reached 97.0% at 100 °C for 10 h. The stability test showed that the 1,3-PD conversion rate still reached 87.3% after five cycles of use. In terms of the catalytic activity in acetalization, the 10 wt % catalyst exhibited much higher selectivity in the simulated fermentation liquid for 1,3-PD than ethanol, 2,3-butanediol, and glycerol. This indicates that ZrO2―10 wt % MoO3 mixed oxide has the best characteristics for the extraction of 1,3-PD from dilute aqueous solutions. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=25867281 [article] ZrO2 – MoO3 for the acetalization of 1,3 - propanediol from dilute solutions [texte imprimé] / Min Wu, Auteur ; Chun-long Li, Auteur ; Jin Zhang, Auteur . - 2012 . - pp. 6304-6309. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 18 (Mai 2012) . - pp. 6304-6309 Mots-clés : Dilute solution Résumé : A reactive isolation approach for the recovery of 1,3-propanediol (1,3-PD) from dilute aqueous solutions was performed on ZrO2―MoO3 solid heterogeneous catalysts through a cyclic reaction with aldehyde to form acetals (2-methyl-1,3-dioxane, 2MD). The effects of catalyst composition, reaction temperature, reaction time, and optimal dose on the conversion rates of acetalization and hydrolysis were investigated. For ZrO2―10 wt % MoO3 prepared by the precipitation―impregnation method, the conversion rate of 1,3-PD in acetalization reached 95.7% at 60 °C for 2 h, and the acetals conversion in the hydrolysis reaction reached 97.0% at 100 °C for 10 h. The stability test showed that the 1,3-PD conversion rate still reached 87.3% after five cycles of use. In terms of the catalytic activity in acetalization, the 10 wt % catalyst exhibited much higher selectivity in the simulated fermentation liquid for 1,3-PD than ethanol, 2,3-butanediol, and glycerol. This indicates that ZrO2―10 wt % MoO3 mixed oxide has the best characteristics for the extraction of 1,3-PD from dilute aqueous solutions. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=25867281

Exemplaires

Code-barres	Cote	Support	Localisation	Section	Disponibilité
aucun exemplaire