Abstract
A titanium-chromium-oxide catalyst was prepared by a facile calcination of titanium-modified MIL-101(Cr). The resulting material, possessing a surface area of 60 m2 g−1 and a titania content of 50.0 wt%, can be directly used as the catalyst for oxidative desulfurization (ODS) reaction of dibenzothiophene (DBT). This novel ODS catalyst can remove 900 ppm sulfur-containing compounds in a reaction time of 30 min at 60 °C. The experimental results showed that the specific activity increased with the titanium content. The specific activity of the catalyst with 50%Ti reached 129 μmol/m2, which was much higher than that of reported Ti-based catalysts.
Highlights
The sulfur-containing compounds in fuel oil combust into SOx and result in environmental pollution [1]
Catalysts 2020, 10, 1091 titania exhibits high performance for oxidative desulfurization (ODS) of DBT; the results showed that silica improves dispersion of
The XRD patterns of pyrolysis of MIL-101(Cr)/Ti composites proved that the heating treatment products were composed of Cr2 O3 and anatase TiO2, and the intensity of TiO2 peaks were increasing with the increasing amount of titanium-loading in the
Summary
The sulfur-containing compounds in fuel oil combust into SOx and result in environmental pollution [1]. Catalysts 2020, 10, 1091 titania exhibits high performance for ODS of DBT; the results showed that silica improves dispersion of. The highly tunable properties of MOF-derived metal oxides along with the possibilities to combine them with highly reactive titania make them attractive candidates for highly efficient ODS catalysts [22]. Jongsik Kim and his coworkers [23] conducted works on IRMOF-3-derived Ti/NC catalysts by modifying Ti precursors on the amine groups in MOFs. The catalytic tests results showed that this MOF-templated Ti/NC material had double conversion of DBT than the pristine MOFs, illustrating the introduction of titanium species in the zinc-based MOFs could enhance the catalytic activity. TiO2 -containing carbon derived from a pyrolysis of MOF composites and found it was a highly active oxidative desulfurization catalyst. The newly developed titanium-chromium-oxide showed a high specific activity in the ODS of DBT
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