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Isomerization of n-Pentane Catalyzed by Acidic Chloroaluminate Ionic liquids / Rui Zhang in Industrial & engineering chemistry research, Vol. 47 n°21 (Novembre 2008) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 47 n°21 (Novembre 2008) . - p. 8205–8210 Titre : Isomerization of n-Pentane Catalyzed by Acidic Chloroaluminate Ionic liquids Type de document : texte imprimé Auteurs : Rui Zhang, Auteur ; Xianghai Meng, Auteur ; Zhichang Liu, Auteur Année de publication : 2008 Article en page(s) : p. 8205–8210 Note générale : Chemical engineerimg Determination of lonic liquid Langues : Anglais (eng) Mots-clés : acidity  characterization Résumé : Isomerization oil becomes an important motor gasoline blending component due to increased statutory reduction of aromatics and olefins (high octane number components) contents in motor gasoline. The ionic liquid Et3NHCl−AlCl3 (mole fraction of AlCl3 is 0.67) shows good catalytic performance for the isomerization of n-pentane. The conversion of n-pentane increases with the enhancement of reaction temperature, reaction time, and catalyst/oil volume ratio (C/O ratio), while the yield of isomerization oil and the selectivity of isoparaffins decrease. The optimal reaction temperature, reaction time, and C/O ratio are 30 °C, 3 h, and 1:1, respectively. Under the optimal reaction conditions, the conversion of n-pentane, the yield of isomerization oil, and the selectivity of isoparaffins are 44.61 wt %, 96.07 wt %, and 90.52%, respectively. High conversion of n-pentane favors the octane number improvement of isomerization oil without the circulation of n-pentane, while low conversion of n-pentane is preferential with the circulation of n-pentane. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie801013j [article] Isomerization of n-Pentane Catalyzed by Acidic Chloroaluminate Ionic liquids [texte imprimé] / Rui Zhang, Auteur ; Xianghai Meng, Auteur ; Zhichang Liu, Auteur . - 2008 . - p. 8205–8210. Chemical engineerimg Determination of lonic liquid Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 47 n°21 (Novembre 2008) . - p. 8205–8210 Mots-clés : acidity  characterization Résumé : Isomerization oil becomes an important motor gasoline blending component due to increased statutory reduction of aromatics and olefins (high octane number components) contents in motor gasoline. The ionic liquid Et3NHCl−AlCl3 (mole fraction of AlCl3 is 0.67) shows good catalytic performance for the isomerization of n-pentane. The conversion of n-pentane increases with the enhancement of reaction temperature, reaction time, and catalyst/oil volume ratio (C/O ratio), while the yield of isomerization oil and the selectivity of isoparaffins decrease. The optimal reaction temperature, reaction time, and C/O ratio are 30 °C, 3 h, and 1:1, respectively. Under the optimal reaction conditions, the conversion of n-pentane, the yield of isomerization oil, and the selectivity of isoparaffins are 44.61 wt %, 96.07 wt %, and 90.52%, respectively. High conversion of n-pentane favors the octane number improvement of isomerization oil without the circulation of n-pentane, while low conversion of n-pentane is preferential with the circulation of n-pentane. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie801013j

Pressure drop models of seepage catalytic packing internal for catalytic distillation column / Xin Gao in Industrial & engineering chemistry research, Vol. 51 N° 21 (Mai 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 21 (Mai 2012) . - pp. 7447-7452 Titre : Pressure drop models of seepage catalytic packing internal for catalytic distillation column Type de document : texte imprimé Auteurs : Xin Gao, Auteur ; Xingang Li, Auteur ; Rui Zhang, Auteur Année de publication : 2012 Article en page(s) : pp. 7447-7452 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Distillation  column  Catalytic  reaction  Modeling  Hydrodynamics  Pressure  drop Résumé : A seepage catalytic packing internal (SCPI) consisting of catalyst containers with avert-overflow baffles and corrugated metal sheets was developed for a catalytic distillation column. By changing the width ratio (Rcc/cms) of the catalyst containers (CC) relative to corrugated metal sheets (CMS), the SCPI developed in this work can be suitable to various reaction and separation zones in different catalytic distillation processes. The influence of the Rcc/cms, a significant factor influencing the pressure drop, also was studied. The flooding behaviors and pressure drop were evaluated using cold model experiments in the column (600 mm in diameter x 1500 mm height); the results were compared with that of the catalytic packing typically used in catalytic distillation. A model for predicting the pressure drop of SCPI was developed and compared with experimental results. Results show that the pressure drop was decreased with decreases of Rcc/cms. The results from this work are valuable in the design and scale-up of SCPI in catalytic distillation columns. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=25948485 [article] Pressure drop models of seepage catalytic packing internal for catalytic distillation column [texte imprimé] / Xin Gao, Auteur ; Xingang Li, Auteur ; Rui Zhang, Auteur . - 2012 . - pp. 7447-7452. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 21 (Mai 2012) . - pp. 7447-7452 Mots-clés : Distillation  column  Catalytic  reaction  Modeling  Hydrodynamics  Pressure  drop Résumé : A seepage catalytic packing internal (SCPI) consisting of catalyst containers with avert-overflow baffles and corrugated metal sheets was developed for a catalytic distillation column. By changing the width ratio (Rcc/cms) of the catalyst containers (CC) relative to corrugated metal sheets (CMS), the SCPI developed in this work can be suitable to various reaction and separation zones in different catalytic distillation processes. The influence of the Rcc/cms, a significant factor influencing the pressure drop, also was studied. The flooding behaviors and pressure drop were evaluated using cold model experiments in the column (600 mm in diameter x 1500 mm height); the results were compared with that of the catalytic packing typically used in catalytic distillation. A model for predicting the pressure drop of SCPI was developed and compared with experimental results. Results show that the pressure drop was decreased with decreases of Rcc/cms. The results from this work are valuable in the design and scale-up of SCPI in catalytic distillation columns. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=25948485