ADSORPTION OF 4,6-DIMETHYLDIBENZOTHIOPHENE OVER Cu/ZrO2

Journal of The Chilean Chemical Society

BAEZA, P¹  AGUILA, G²  ARAYA, P²  BASSI, R³  VILLARROEL, M³  OJEDA, J⁴ 

[1] Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile;Universidad de Chile, Santiago, Chile;Universidad de Santiago de Chile, Santiago, Chile;Universidad de Valparaíso, Valparaíso, Chile

关键词: Desulfurization;    Adsorption;    Copper;    Zirconia;    4;    6-;    Dimethyldibenzothiophene.;   

DOI  :  10.4067/S0717-97072015000100009

学科分类：化学（综合）

来源: Sociedad Chilena de Quimica

【 摘 要 】

The adsorption of refractory sulfur molecule 4,6-Dimethyldibenzothiophene (4,6-DMDBT) over copper supported on zirconia, using different copper loadings (2-10% w/w) and a zirconia support with a high specific surface area, was studied. The results showed that the adsorption capacity of 4,6-DMDBT over Cu/ZrO2 increased with copper content, reaching a maximum at around 8% Cu (0.58 mmol 4,6-DMDBT per gram of adsorbent). The results of characterizations with H2-TPR, Electrophoretic Migration, and XRD demonstrated that this Cu loading (8%) also corresponds to a maximum copper dispersion capacity for ZrO2 support. Also, these absorbents showed considerable selectivity toward the adsorption of 4,6-DMDBT in a feed stream also containing Quinoline, decreasing adsorption capacity of 4,6-DMDBT by only 35%, despite both molecules being present in the same concentrations. The results of this work showed that desulfurization adsorption using Cu/ZrO2 adsorbents can be an effective method to remove this type of refractory sulfur molecules, and an excellent alternative as a complementary process for deep desulfurization in the fuel industry.

【 授权许可】

Unknown