Search Results - "Nicolaides, C.P."

Non-sulfided nickel supported on silicated alumina as catalyst for the hydrocracking of n-hexadecane and of iron-based Fischer-Tropsch wax by de Haan, R., Joorst, G., Mokoena, E., Nicolaides, C.P.

“…Nickel(II) was introduced by wet impregnation onto a commercial silicated alumina (Siralox 40). TPR showed that the nickel oxide species was predominantly…”
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The effects of boron and silver on the oxygen-free conversion of methane over Mo/H-ZSM-5 catalysts by Ngobeni, M.W., Carley, A.F., Scurrell, M.S., Nicolaides, C.P.

“…The effect of adding boron (0.05–0.2 wt.%) and silver (0.5 wt.%) on the performance of Mo/H-ZSM-5 catalysts has been investigated. The results indicate that at…”
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Nickel silica-alumina catalysts for ethene oligomerization—control of the selectivity to 1-alkene products by Nicolaides, C.P., Scurrell, M.S., Semano, P.M.

“…A rational approach to control the behavior of nickel(II) ion-exchanged silica-alumina oligomerization catalysts has been attempted. Emphasis has been placed…”
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The effect of sulfur on supported cobalt Fischer–Tropsch catalysts by Curtis, V., Nicolaides, C.P., Coville, N.J., Hildebrandt, D., Glasser, D.

“…TiO 2- and SiO 2-supported, 10% by mass cobalt Fischer–Tropsch (F–T) catalysts, loaded with low concentrations of sulfur (100–2000 ppm) from different sources…”
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Silication of γ-alumina catalyst during the dehydration of linear primary alcohols by Makgoba, N.P., Sakuneka, T.M., Koortzen, J.G., van Schalkwyk, C., Botha, J.M., Nicolaides, C.P.

“…The dehydration of alcohols to alkenes over heterogeneous catalysts such as γ-alumina occurs at temperatures of around 300 °C, and it could be accompanied by…”
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Catalysts and conditions for the highly efficient, selective and stable heterogeneous oligomerisation of ethylene by Heveling, J., Nicolaides, C.P., Scurrell, M.S.

“…The oligomerisation of ethylene into products in the C 4–C 20 range over heterogeneous nickel catalysts in a fixed-bed reactor at low temperature and high…”
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A novel family of solid acid catalysts: substantially amorphous or partially crystalline zeolitic materials by Nicolaides, C.P

“…Hydrogels, typically used for the synthesis of highly crystalline ZSM-5 samples at 150°C and under autogenous pressure, were subjected to lower hydrothermal…”
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NAS (novel aluminosilicates) as catalysts for the aromatisation of propane: Studies of zinc and gallium modified zeolite-based systems having various extents of XRD crystallinity by Nicolaides, C.P., Sincadu, N.P., Scurrell, M.S.

“…A review of existing literature on the behaviour of H-, Zn- and Ga-ZSM-5 systems in the aromatisation of propane suggest that no clear picture emerges…”
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NAS (novel aluminosilicates) as catalysts for the aromatisation of propane by Nicolaides, C.P., Sincadu, N.P., Scurrell, M.S.

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Characterization by ammonia adsorption microcalorimetry of substantially amorphous or partially crystalline ZSM-5 materials and correlation with catalytic activity by Nicolaides, C.P., Kung, H.H., Makgoba, N.P., Sincadu, N.P., Scurrell, M.S.

“…Ammonia adsorption microcalorimetry studies have shown that for ZSM-5-based materials, whose XRD crystallinity was varied from 3 to 70%, the number of strong…”
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Metathesis of fatty esters derived from South African sunflower oil by Nicolaides, C.P. (CSIR, Pretoria, Republic of South Africa), Opperman, J.H, Scurrell, M.S, Focke, W.W

“…The metathesis of the mixture of fatty monoesters derived from sunflower oil was examined using the WCL6‐(CH3)4Sn catalytic system. After distillation of the…”
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