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Removal of trace olefins from aromatics over metal-halides-modified clay and its industrial test / Guo-liang Li in Industrial & engineering chemistry research, Vol. 50 N° 11 (Juin 2011) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 50 N° 11 (Juin 2011) . - pp 6646–6649 Titre : Removal of trace olefins from aromatics over metal-halides-modified clay and its industrial test Type de document : texte imprimé Auteurs : Guo-liang Li, Auteur ; Jin-Ning Luan, Auteur ; Xian-song Zeng, Auteur Année de publication : 2011 Article en page(s) : pp 6646–6649 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Olefins  aromatics  Metal  Halides Résumé : Commercial clay modified with metal halides was prepared to remove olefins from aromatics in the laboratory, and its industrial test was conducted. Different amounts of metal-halides-modified clay were made and characterized by XRD and pyridine adsorption followed by FT-IR. The type and nature of active sites in the removal of olefins over the prepared catalysts have been examined. The study of acidic properties of the modified clay revealed that the L acid, especially the weak L acid plays an important role in the reaction. The experimental results revealed that commercial clay modified with metal halides had much better catalytic activity. During Sinopec Qilu company industrial test, modified clay had an effective running time six times as long as that of untreated commercial clay. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie2001567 [article] Removal of trace olefins from aromatics over metal-halides-modified clay and its industrial test [texte imprimé] / Guo-liang Li, Auteur ; Jin-Ning Luan, Auteur ; Xian-song Zeng, Auteur . - 2011 . - pp 6646–6649. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 11 (Juin 2011) . - pp 6646–6649 Mots-clés : Olefins  aromatics  Metal  Halides Résumé : Commercial clay modified with metal halides was prepared to remove olefins from aromatics in the laboratory, and its industrial test was conducted. Different amounts of metal-halides-modified clay were made and characterized by XRD and pyridine adsorption followed by FT-IR. The type and nature of active sites in the removal of olefins over the prepared catalysts have been examined. The study of acidic properties of the modified clay revealed that the L acid, especially the weak L acid plays an important role in the reaction. The experimental results revealed that commercial clay modified with metal halides had much better catalytic activity. During Sinopec Qilu company industrial test, modified clay had an effective running time six times as long as that of untreated commercial clay. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie2001567

Study of modified clay and Its industrial testing in aromatic refining / Jin-Ning Luan in Industrial & engineering chemistry research, Vol. 50 N° 12 (Juin 2011) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 50 N° 12 (Juin 2011) . - pp. 7150-7154 Titre : Study of modified clay and Its industrial testing in aromatic refining Type de document : texte imprimé Auteurs : Jin-Ning Luan, Auteur ; Guo-liang Li, Auteur ; Li Shi, Auteur Année de publication : 2011 Article en page(s) : pp. 7150-7154 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Refining Résumé : A novel catalyst was synthesized and used to remove the trace olefins in aromatic hydrocarbons. Laboratory experiments and industrial siding tests indicated that the catalyst could improve the conversion of olefins and prolong the lifetime more than the commercial particulate clay. X-ray diffraction proved that the modification did not change the structure to active clay, N2 adsorption-desorption showed a decrease in surface area, and pyridine FTIR suggested that the intercalation of metal halides increased the amount of the total acid, especially the weak Lewis acid. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24239028 [article] Study of modified clay and Its industrial testing in aromatic refining [texte imprimé] / Jin-Ning Luan, Auteur ; Guo-liang Li, Auteur ; Li Shi, Auteur . - 2011 . - pp. 7150-7154. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 12 (Juin 2011) . - pp. 7150-7154 Mots-clés : Refining Résumé : A novel catalyst was synthesized and used to remove the trace olefins in aromatic hydrocarbons. Laboratory experiments and industrial siding tests indicated that the catalyst could improve the conversion of olefins and prolong the lifetime more than the commercial particulate clay. X-ray diffraction proved that the modification did not change the structure to active clay, N2 adsorption-desorption showed a decrease in surface area, and pyridine FTIR suggested that the intercalation of metal halides increased the amount of the total acid, especially the weak Lewis acid. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24239028