MIL-53(Al) / Dinesh V. Patil in Industrial & engineering chemistry research, Vol. 50 N° 18 (Septembre 2011)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 50 N° 18 (Septembre 2011) . - pp. 10516-10524 Titre : MIL-53(Al) : an efficient adsorbent for the removal of nitrobenzene from aqueous solutions Type de document : texte imprimé Auteurs : Dinesh V. Patil, Auteur ; Phani B. Somayajulu Rallapalli, Auteur ; Ganga P. Dangi, Auteur Année de publication : 2011 Article en page(s) : pp. 10516-10524 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Aqueous solution Résumé : MIL-53(Al), hydrothermally synthesized and purified by solvent extraction, was used as adsorbent for the removal of nitrobenzene from aqueous solution. Pristine MIL-53(Al) and MIL-53(Al) loaded with various amounts of nitrobenzene were characterized by X-ray diffraction analysis with cell indexation study, thermogravimetric analysis, Fourier transform infrared spectroscopy, and BET surface area. A simulation study of nitrobenzene adsorption on MIL-53(Al) was performed. The adsorption study of nitrobenzene on MIL-53(Al) was carried out at 30 ± 1 °C using batch experiments. The amount of nitrobenzene adsorbed decreases with an increase in the temperature from 30° to 60 °C and pH from 8 to 11, whereas no significant difference was observed in acidic pH. The adsorption data were fitted to Sips and Redlich―Peterson isotherm models. The adsorption capacity of nitrobenzene on MIL-53(Al) obtained was 610 mg/g, higher than that of zeolites (267.2 mg/g) and organoclays (100 mg/g), but, lower than that of modified commercial activated carbons (1443.53 mg/g). DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24523874 [article] MIL-53(Al) : an efficient adsorbent for the removal of nitrobenzene from aqueous solutions [texte imprimé] / Dinesh V. Patil, Auteur ; Phani B. Somayajulu Rallapalli, Auteur ; Ganga P. Dangi, Auteur . - 2011 . - pp. 10516-10524. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 18 (Septembre 2011) . - pp. 10516-10524 Mots-clés : Aqueous solution Résumé : MIL-53(Al), hydrothermally synthesized and purified by solvent extraction, was used as adsorbent for the removal of nitrobenzene from aqueous solution. Pristine MIL-53(Al) and MIL-53(Al) loaded with various amounts of nitrobenzene were characterized by X-ray diffraction analysis with cell indexation study, thermogravimetric analysis, Fourier transform infrared spectroscopy, and BET surface area. A simulation study of nitrobenzene adsorption on MIL-53(Al) was performed. The adsorption study of nitrobenzene on MIL-53(Al) was carried out at 30 ± 1 °C using batch experiments. The amount of nitrobenzene adsorbed decreases with an increase in the temperature from 30° to 60 °C and pH from 8 to 11, whereas no significant difference was observed in acidic pH. The adsorption data were fitted to Sips and Redlich―Peterson isotherm models. The adsorption capacity of nitrobenzene on MIL-53(Al) obtained was 610 mg/g, higher than that of zeolites (267.2 mg/g) and organoclays (100 mg/g), but, lower than that of modified commercial activated carbons (1443.53 mg/g). DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24523874

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Sorption of methane, nitrogen, oxygen, and argon in ZSM-5 with different SiO2/Al2O3 ratios / Govind Sethia in Industrial & engineering chemistry research, Vol. 49 N° 5 (Mars 2010)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 49 N° 5 (Mars 2010) . - pp. 2353–2362 Titre : Sorption of methane, nitrogen, oxygen, and argon in ZSM-5 with different SiO2/Al2O3 ratios : grand canonical monte carlo simulation and volumetric measurements Type de document : texte imprimé Auteurs : Govind Sethia, Auteur ; Renjith S. Pillai, Auteur ; Ganga P. Dangi, Auteur Année de publication : 2010 Article en page(s) : pp. 2353–2362 Note générale : Industrial Chemistry Langues : Anglais (eng) Mots-clés : Methane  Nitrogen  Oxygen  Volumetric measurements Résumé : Sorption of CH4, N2, O2, and Ar in ZSM-5 with different SiO2/Al2O3 ratios was studied by volumetric measurements and grand canonical Monte Carlo simulation. Sorption capacity for all the gases studied was observed to decrease with an increase in the SiO2/Al2O3 ratio of ZSM-5. The sorption selectivity of CH4 over N2 increases, whereas sorption selectivities of N2 over O2 and Ar decrease with an increase in the SiO2/Al2O3 ratio of ZSM-5. ZSM-5 with SiO2/Al2O3 of 900 showed higher selectivity for CH4 over N2, whereas the SiO2/Al2O3 ratio of 25 showed higher N2 selectivity over O2 and Ar. The heats of adsorption for CH4 and N2 decrease and that for O2 and Ar remain unaffected with an increase in SiO2/Al2O3 ratio of ZSM-5. The values of Henry’s constant were also calculated for CH4, N2, O2, and Ar for adsorption in ZSM-5 having varied SiO2/Al2O3 ratio. The experimental results were compared with theoretically calculated data using grand canonical Monte Carlo (GCMC) simulation. Simulation studies expectedly showed the proximity of N2 molecules to the sites occupied by extraframework sodium cations. Note de contenu : Bibliogr. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie900280w [article] Sorption of methane, nitrogen, oxygen, and argon in ZSM-5 with different SiO2/Al2O3 ratios : grand canonical monte carlo simulation and volumetric measurements [texte imprimé] / Govind Sethia, Auteur ; Renjith S. Pillai, Auteur ; Ganga P. Dangi, Auteur . - 2010 . - pp. 2353–2362. Industrial Chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 5 (Mars 2010) . - pp. 2353–2362 Mots-clés : Methane  Nitrogen  Oxygen  Volumetric measurements Résumé : Sorption of CH4, N2, O2, and Ar in ZSM-5 with different SiO2/Al2O3 ratios was studied by volumetric measurements and grand canonical Monte Carlo simulation. Sorption capacity for all the gases studied was observed to decrease with an increase in the SiO2/Al2O3 ratio of ZSM-5. The sorption selectivity of CH4 over N2 increases, whereas sorption selectivities of N2 over O2 and Ar decrease with an increase in the SiO2/Al2O3 ratio of ZSM-5. ZSM-5 with SiO2/Al2O3 of 900 showed higher selectivity for CH4 over N2, whereas the SiO2/Al2O3 ratio of 25 showed higher N2 selectivity over O2 and Ar. The heats of adsorption for CH4 and N2 decrease and that for O2 and Ar remain unaffected with an increase in SiO2/Al2O3 ratio of ZSM-5. The values of Henry’s constant were also calculated for CH4, N2, O2, and Ar for adsorption in ZSM-5 having varied SiO2/Al2O3 ratio. The experimental results were compared with theoretically calculated data using grand canonical Monte Carlo (GCMC) simulation. Simulation studies expectedly showed the proximity of N2 molecules to the sites occupied by extraframework sodium cations. Note de contenu : Bibliogr. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie900280w

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