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Methanol conversion to dimethyl ether over H-SAPO-34 catalyst / Grigore Pop in Industrial & engineering chemistry research, Vol. 48 N° 15 (Août 2009) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 48 N° 15 (Août 2009) . - pp. 7065–7071 Titre : Methanol conversion to dimethyl ether over H-SAPO-34 catalyst Type de document : texte imprimé Auteurs : Grigore Pop, Auteur ; Grigore Bozga, Auteur ; Rodica Lipsa, Auteur Année de publication : 2009 Article en page(s) : pp. 7065–7071 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : Methanol  conversion  Dimethyl  ether  H-SAPO-34  molecular  sieve  Catalyst Résumé : The process of methanol conversion to dimethyl ether over an H-SAPO-34 molecular sieve was studied, using the catalyst as synthesized or formulated in an alumina matrix. The experiments were performed on the temperature interval 100−250 °C, liquid space velocities of 1−5 h−1, and pressures between 1 and 10 bar. The results evidenced a high catalytic activity of the H-SAPO-34 molecular sieve, providing in these conditions a practically total methanol transformation to dimethyl ether. Also, a special run, performed at 180 °C, with an output composition close to chemical equilibrium, showed no significant change of catalyst activity during an on-stream time of 50 h, this proving a good stability and resistance to deactivation. A published rate expression for the methanol dehydration reaction was selected and adapted to describe the experimentally observed process kinetics. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie900532y [article] Methanol conversion to dimethyl ether over H-SAPO-34 catalyst [texte imprimé] / Grigore Pop, Auteur ; Grigore Bozga, Auteur ; Rodica Lipsa, Auteur . - 2009 . - pp. 7065–7071. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 48 N° 15 (Août 2009) . - pp. 7065–7071 Mots-clés : Methanol  conversion  Dimethyl  ether  H-SAPO-34  molecular  sieve  Catalyst Résumé : The process of methanol conversion to dimethyl ether over an H-SAPO-34 molecular sieve was studied, using the catalyst as synthesized or formulated in an alumina matrix. The experiments were performed on the temperature interval 100−250 °C, liquid space velocities of 1−5 h−1, and pressures between 1 and 10 bar. The results evidenced a high catalytic activity of the H-SAPO-34 molecular sieve, providing in these conditions a practically total methanol transformation to dimethyl ether. Also, a special run, performed at 180 °C, with an output composition close to chemical equilibrium, showed no significant change of catalyst activity during an on-stream time of 50 h, this proving a good stability and resistance to deactivation. A published rate expression for the methanol dehydration reaction was selected and adapted to describe the experimentally observed process kinetics. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie900532y