000			01541nab a2200205 4500
005			20260520000927.0
008			260224s2011 xxu
245	0	0	_aAbsorption and oxidation of H2S in caprolactam tetrabutyl ammonium bromide ionic liquid
260			_a _b _cene./feb. 2011
270			_a01/04/2011 ; 01/04/2011
300			_a3 p. ; 159-161
520			_aTranscripción del resumen del autor. To explore environmentally benign solvents for absorbing and using H2S, a series of caprolactam tetrabutyl ammonium bromide ionic liquids were synthesized, the solubilities of H2S in which were measured at 303.2-363.2 K and atmospheric pressure. The solubility of H2S in the ionic liquid (1:1 mole ratio) was 5.40% at 303.2 K and ambient pressure, decreased sharply as temperature increased, and increased with the increasing mole ratio of caprolactam. The absorption and desorption of H2S were practically reversible in the ionic liquids, which was characterized by nuclear magnetic resonance. Using air, hydrogen sulfide could be oxidized to elemental S in the ionic liquids, which makes it easier to recycle hydrogen sulfide. Caprolactam tetrabutyl ammonium bromide ionic liquids would be useful for removing and reusing H2S in pollution control and could be regarded as the most potential absorbent and recoverer of H2S.
581			_a1
773	0		_tEnergy & fuels _g25
942			_cARTICULO
100	1		_aGuo, Bin _945012
100	1		_aDuan, Erhong _945013
100	1		_aZhong, Yongfei _945014
999			_c174388 _d174388