Separation of thiophenes from

The adsorption of thiophen on montmorillonites and on other catalysts has been investigated. Several papers of an analytical nature and on the separation of thiophen from benzene have appeared. ... [Pg.80]

Pervaporative desulfurization. Poly(dimethyl siloxane) (PDMS)/ poly(oUgosilsesquioxanes) (POSS) composite membrane Composite membranes are found to be promising for the separation of thiophene from n-heptane. [200]... [Pg.206]

The separation of thiophen from benzene by solvent extraction has been studied. In connection with gas-chromatographic studies of donor-acceptor complexes, the association between aromatic heterocyclic derivatives, including thiophens, and dibutyl tetrachlorophthalate has been... [Pg.427]

An early process for the separation of thiophene from benzene reste on the fact that this compound condenses more rapidly w ith acid formalde-hA de than does benzene. According to this pi ocedure, 10,000 parts of benzene containing thiophene ai e agitated with 1500 parts of 73 per cent sulfuric acid and 45 parts of 30 per cent formaldehyde at ordinary temperature for several hours. When the benzene layer ceases to give a test for thiophene, it is removed from the acid liquor and steam-distilled to separate it from amorphous condensates ... [Pg.334]

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