期刊
MICROPOROUS AND MESOPOROUS MATERIALS
卷 268, 期 -, 页码 276-284出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.micromeso.2018.04.027
关键词
Desulfurization; One-step synthesis; Mesoporous Ni-AlSBA-15; Lewis acid sites; Regenerated ability
类别
资金
- BAOSTEEL Group Corporation [50876122]
- National Science Foundation of China
Hexagonally mesoporous 5-30%Ni-AlSBA-15 (30) sorbents were prepared by one-step strategy synthesis and the adsorptive desulfurization performances were investigated in a fixed bed adsorber via model and commercial liquid fuels at ambient pressure. The highest sulfur capacity (17.46 mg-S/g-sorbent) over 20%Ni-AlSBA-15 (30) correlated closely with high Lewis acid sites and larger S-BET of 20%Ni-AlSBA-15 (30). The characterization results of N-2 adsorption, FT-IR, Py-FT-IR, ICP, HRTEM, EDXA, small- and wide-angle XRD revealed that aluminum or nickel atoms could enter effectively the Si-O-Al (or Ni) framework of SBA-15 and were randomly dispersed highly on the hexagonal pore walls of SBA-15. The hexagonal p6mm symmetry mesoporous structure of 20%Ni-AlSBA-15 (30) still remained intact after four successive desulfurization/regeneration cycles, indicating that 20%Ni-AlSBA-15 (30) presents ultrahigh structural stability and regenerable ability. As comparison, SBA-15 and AlSBA-15 (SiO2/Al2O3 = infinity, 100, 50, 30, 20, 10) were also prepared and evaluated on physical properties.
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