An organic-inorganic hybrid compound constructed by polytungsto-vanadosilicate and hexadecyltrimethyl ammonium as an efficient catalyst for demercaptanization of crude oil

摘要

[C16H33N(CH3)(3)](4)H3SiV3W9O40 has been synthesized by reaction of Naio[alpha-SiW9O34] with sodium vanadate and encapsulated by cetyltrimethyl ammonium. Then this organic-inorganic hybrid compound condensation with titanium tetraisopropoxide at 100 degrees C via sol-gel method under oil-bath condition. [C16H33N(CH3)(3)](4)H3SiV3W9O40-TiO2 was prepared. The materials characterized by IR, XRD, TEM and UV-vis techniques. This alkyl ammonium keggin-type nanoparticle be able to scavenge mercaptans and hydrogen sulfide (with high yield) in the presence of H2O2. This system provides a practical, convenient and efficient method for scavenging of sulfur compound in light and heavy crude oil. (C) 2014 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.