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Reference type: Journal
Authors: Castro B, Whitcombe MJ, Vulfson EN, Vazquez-Duhalt R, Barzana E
Article Title: Molecular imprinting for the selective adsorption of organosulphur compounds present in fuels.
Publication date: 2001
Journal: Analytica Chimica Acta
Volume: 435
Issue: (1)
Page numbers: 83-90.
DOI: 10.1016/S0003-2670(01)00799-1

Abstract: A novel approach to the potential desulphurisation of fuels such as diesel is proposed. It relies on the creation of recognition sites complementary to sulphur-containing compounds in highly cross-linked polymeric matrices using the molecular imprinting technique. Dibenzothiophene sulphone (DBTS) was used as template for the preparation of molecularly imprinted polymers (MIPs). Four different polymers were synthesised using 5-octyloxy-1,3-bis(4-ethenylphenyl)-benzenedicarboxamide or methacrylic acid and divinylbenzenes or ethylene glycol dimethacrylate as functional monomers and cross-linkers, respectively. Three polymers showed better binding of DBTS than non-imprinted controls, and were also superior in adsorption of organosulphur compounds such as dibenzothiophene (DBT) and benzothiophene (BT) present in a model mixture. A maximum adsorption of 66 mg DBT per gram of polymer was observed at a polymer load of 10 gl(-1) and an initial DBT concentration of 3.69 gl(-1). The polymers also showed selectivity for fluorene. (C) 2001 Elsevier Science B.V. All rights reserved

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