Desulfurization of Model Oil via Adsorption by Copper(II) Modified Bentonite

Bulletin of the Korean chemical society

Huan Huang¹  Li Shi¹  Dezhi Yi¹ 

关键词: Dimethyl sulfide;    Propylmercaptan;    Bentonite;    Adsorption;    Mechanism;   

DOI  :  

学科分类：化学（综合）

来源: Korean Chemical Society

【 摘 要 】

In order to further reduce the sulfur content in liquid hydrocarbon fuels, a desulfurization process by adsorption for removing dimethyl sulfide (DMS) and propylmercaptan (PM) was investigated. Bentonite adsorbents modified by CuCl2 for the desulfurization of model oil was investigated. The results indicated that the modified bentonite adsorbents were effective for adsorption of DMS and PM. The bentonite adsorbents were characterized by X-ray diffraction (XRD) and thermal analysis (TGA). The acidity was measured by FT-IR spectroscopy. Several factors that influence the desulfurization capability, including loading and calcination temperature, were studied. The maximum sulfur adsorption capacity was obtained at a Cu(II) loading of 15 wt %, and the optimum calcination temperature was 150 oC. Spectral shifts of the ν(C-S) and ν(Cu-S) vibrations of the complex compound obtained by the reaction of CuCl2 and DMS were measured with the Raman spectrum. On the basis of complex adsorption reaction and hybrid orbital theory, the adsorption on modified bentonite occurred via multilayer intermolecular forces and S-M (σ) bonds.

【 授权许可】

Unknown