[article] in Industrial & 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 |
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Affiner la rechercheZrO2 – MoO3 for the acetalization of 1,3 - propanediol from dilute solutions / Min Wu in Industrial & engineering chemistry research, Vol. 51 N° 18 (Mai 2012)
