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- W2364763083 abstract "Supported ionic liquids were used as the catalyst for Friedel-Crafts acylation of ethylbenzene with phthalic anhydride to 2-(4-ethylbenzoyl) benzoic acid(BE acid).The SiO2 supports were modified by AlCl3 solution and mixed acids.Several supported ionic liquids were prepared by impregnation method and characterized by means of FT-IR,BET,SEM and XRD.The effects of supports modification,preparation temperature,loadings of ionic liquids,reaction temperature and catalyst dosage were investigated.The results showed that the supported ionic liquids catalysts exhibited high activity for the acylation reaction,while the selectivity to BE acid was very low.Phthalic anhydride conversion of 100% and selectivity to 2-(4-ethylbenzoyl) benzoic acid of 91.1% were attained after the supports were modified by mixed acid.The catalyst could be used repeatedly after regeneration and selectivity to BE acid of 88.92% was obtained after the catalyst was regenerated." @default.
- W2364763083 created "2016-06-24" @default.
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- W2364763083 date "2008-01-01" @default.
- W2364763083 modified "2023-09-27" @default.
- W2364763083 title "Synthesis of 2-(4-ethylbenzoyl) benzoic acid over ionic liquids supported on modified-SiO_2" @default.
- W2364763083 hasPublicationYear "2008" @default.
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