Abstract
High-performance X%NiOx/Al2O3 adsorbents were prepared using mesoporous and macroporous alumina for adsorptive desulphurization (ADS) of commercial diesel (total sulphur content, 150 ppmw) at atmospheric pressure. Among the synthesized adsorbents, the reduced mesoporous and macroporous 20%NiOx/Al2O3 (Re20%NiOx/Al2O3) presented the breakthrough capacity of 1.47 mg-S/g-sorbent with sulphur level of 10 ppmw. The ultra-deep desulphurization properties for two adsorbents were evaluated using simulated fuels. The adsorbent with macropores showed a superior desulphurization performance, and the existence of macropores remarkably increased its breakthrough capacity as well as improved the space steric hindrance effect. The adsorbents synthesized were characterized by nitrogen adsorption isotherms (BET), X-ray diffraction, scanning electron microscopy, high-resolution transmission electron microscopy, temperature-programmed reduction of hydrogen, temperature-programmed desorption of ammonia and Fourier transform i...
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