Aromatic saturation of distillates: an overview

Cooper, Barry H.; Donnis, B.B.L.

doi:10.1016/0926-860x(95)00258-8

Cited by 428 publications

(287 citation statements)

References 36 publications

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“…At variance with the traditional CoMo or NiMo catalysts which are active as sulfides, Pd and Pt catalysts are active in the metallic state, and they allow to work at milder conditions in terms of temperature and pressure. Nevertheless, a major drawback in their use is their limited lifetime due to the easy poisoning of the active sites by sulfur [5][6][7]. Appropriate choice of the support and/or alloying with another metal is possible ways for increasing the sulfur tolerance [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Structure control of silica-supported mono and bimetallic Au–Pt catalysts via mercapto capping synthesis

Parola

Kantcheva

Milanova

et al. 2013

Journal of Catalysis

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a b s t r a c tSiO 2 -supported monometallic and bimetallic platinum-gold catalysts are prepared by deposition of metal nanoparticles stabilized by mercaptopropyltriethoxysilane (MPTES) after different aging time of the solution containing metal ions and MPTES. The materials are tested in the hydrodesulfurization (HDS) reaction of thiophene and compared with corresponding catalysts prepared by the conventional deposition-precipitation (DP) method. The monometallic Pt and the bimetallic Au-Pt prepared by DP have comparable activity. With respect to the platinum catalyst prepared by DP, the corresponding platinum catalyst prepared by MPTES particle stabilization exhibits a substantial enhancement of the activity regardless the solution aging time. On the contrary, the MPTES-assisted Au-Pt catalysts have different activities, depending on the solution aging time, with the most active being the one obtained with the 5-day-aged solution. In accord with XRD, XPS, and FTIR, the aging time of the solution, through the different interaction of Pt or Au precursors with the mercapto groups, has a crucial effect on the structure and on the surface of the catalysts. The observed differences in the catalytic activity are related to the structural and compositional changes of the bimetallic particles.

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Section: Introductionmentioning

confidence: 99%

Structure control of silica-supported mono and bimetallic Au–Pt catalysts via mercapto capping synthesis

Parola

Kantcheva

Milanova

et al. 2013

Journal of Catalysis

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“…Too high aromatic contents in diesel fuels have been recognized as detrimental both in lowering the fuel qualities and in contributing significantly to the formation of undesirable tailpipe emissions [1][2][3]. For the sake of environment protection, more stringent legislations associated with clean fuels have been made [2,4].…”

Section: Introductionmentioning

confidence: 99%

“…Commercially, two technologies are being employed for improving diesel qualities by the removal of polynuclear aromatics, aromatic saturation (ASAT) and hydrocracking [1,2,5]. However, both of them have some limitations [5].…”

Section: Introductionmentioning

confidence: 99%

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Coupled hydrogenation and ring opening of tetralin on potassium modified Pt/USY catalysts

Yang

Wen

et al. 2007

Catal Lett

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Coupled hydrogenation and ring opening of tetralin (THN) on Pt/USY catalyst were performed on a high-pressure fixed-bed reactor. The effect of reaction temperature in range of 100-300°C and the nature of the catalyst (metal and acid sites) on the catalytic performance were studied. The results indicated that the extent of hydrocracking, a sequential reaction of ring opening, should be reduced in order to maintain high yields of the ring opening products (ROP). Introduction of the Pt component accelerated the hydrogenation and ring opening of the THN significantly. It was also found to be an effective way to optimize the acid properties of the catalysts by introducing an appropriate amount of potassium to the catalyst, such that the strong acid sites of the catalysts were diminished, and a higher ROP yield could be obtained as a result of the inhibiting of the hydrocracking activity of the catalyst. When the yield of the C10 fractions could be maintained at 90 wt.%, then a maximal ROP yield of 35.6 wt.% could be obtained on a 0.5 wt.% Pt/USY catalyst loaded with 2.0 wt.% of K.

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“…A ciklohexén átalakulásait gyakran választják próbamolekulának katalizátorok fejlesztése során 194,195,196 Az SBA-15 szilikához hasonlóan más hordozók is nagy befolyással lehetnek a ciklikus szénhidrogének hidrogénezési és dehidrogénezési mechanizmusaira. Rémiás és munkatársai szén nanocső hordozott katalizátorok esetében tesznek említést a hordozó-katalizátor közötti diffúzió, katalitikus folyamatokra kiható szerepéről (2.23. ábra) 218 .…”

Section: Ciklohexén Hidrogénezése éS Dehidrogénezéseunclassified

Nanorészecske-szén nanocső nanokompozitok előállítása, jellemzése és katalitikus tulajdonságainak vizsgálata

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Aromatic saturation of distillates: an overview

Cited by 428 publications

References 36 publications

Structure control of silica-supported mono and bimetallic Au–Pt catalysts via mercapto capping synthesis

Structure control of silica-supported mono and bimetallic Au–Pt catalysts via mercapto capping synthesis

Coupled hydrogenation and ring opening of tetralin on potassium modified Pt/USY catalysts

Nanorészecske-szén nanocső nanokompozitok előállítása, jellemzése és katalitikus tulajdonságainak vizsgálata

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