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There is growing interest in developing deep hydrodesulfurization (HDS) catalysts to obtain higher activity. This study provides an investigation of influence of surface-Ti-rich-ETS-10 (AT-ETS) on the performance of NiW-based catalyst (NiW-AT-ETS/Al 2 O 3 ) using NiW-ETS-origin/Al 2 O 3 as the reference. The HDS performance of dibenzothiophene (DBT) and 4,6-dimethyldibenzothiophene (4,6-DMDBT) as model sulfur compounds were tested in fixed reactor. NiW-AT-ETS/Al 2 O 3 containing surface-Ti-rich-ETS-10 lowered H 2 reduction temperature compared to NiW-ETS-origin/Al 2 O 3 . NiW-AT-ETS/Al 2 O 3 had higher WS 2 stacking numbers and shorter slab length though they showed similar sulfidation degree. Higher HDS performance was obtained over NiW-AT-ETS/Al 2 O 3 due to higher WS 2 slab layers in contrast to NiW-ETS-origin/Al 2 O 3 . The advantage of NiW-AT-ETS/Al 2 O 3 for 4,6-DMDBT removal may be also related to easy accessibility of active sites on the catalyst surface as a result of the higher dispersion compared to NiW-ETS-origin/Al 2 O 3 . [ABSTRACT FROM AUTHOR]

Abstract: To produce ultra-clean fuel, a well-designed composite support, the unique combination of titanosilicate ETS-10 and aluminophosphate AlPO4-5 with alumina, was firstly developed. Compared with pure alumina, it owns a certain amount of B type acid sites of moderate acid strength, contributing to the removal of refractory 4,6-DMDBT effectively. Moreover, it can impede inactive nickel spinel formation, improve metal–support interactions and favor more polymeric tungsten species formation, which facilitates the promotion effect of nickel on tungsten. With FCC diesel (sulfur: 960.0μgg−1 and aromatics: 51.0vol.%) as feed, the clean diesel product (sulfur: 2.7μgg−1 and aromatics: 15.0vol.%) without much over-cracking fractions, can be obtained over the composite support based catalyst, at 8.0MPa, 633K, LHSV of 1h−1, H2/oil ratio of 500 (v/v). [Copyright &y& Elsevier]

Abstract: The selective oxidation (SELOX) of CO in the presence of H2, CO2 and H2O has been carried out on stainless steel microreactors with 500μm diameter microchannels. To this end, catalytic films consisting of Pt supported on zeolite Y (Pt-FAU) or ETS-10 (Pt-ETS10), were prepared by seeded hydrothermal synthesis on the surface of the reactor microchannels to give a uniform, mechanically stable catalytic coating on the channel surface. Activity tests were performed with feeds consisting of CO and H2, plus CO2 and/or H2O. The best performance was obtained on microreactors coated with Pt-FAU catalytic films. When feeds representative of real reformate streams (containing CO2 and H2O) were fed to Pt-FAU coated reactors, the microreactor clearly outperformed the fixed bed reactor giving light-off temperatures that were lower by almost 50°C. [Copyright &y& Elsevier]