Search Results - "PAPAYANNAKOS, N"

Transesterification of triglycerides in high and low quality oil feeds over an HT2 hydrotalcite catalyst by Barakos, N., Pasias, S., Papayannakos, N.

“…The use of a heterogeneous catalyst, in the transesterification reaction of refined and acidic cottonseed oil for the production of methyl-esters (biodiesel)…”
Get full text

Catalytic hydroprocessing of cottonseed oil in petroleum diesel mixtures for production of renewable diesel by Sebos, I., Matsoukas, A., Apostolopoulos, V., Papayannakos, N.

“…The conversion of the esters included in refined cottonseed oil into hydrocarbon molecules compatible with petroleum diesel, which are named renewable diesel,…”
Get full text

Performance of Ni/Si-pillared clay catalytic extrudates for benzene hydrogenation reaction by Louloudi, A., Papayannakos, N.

“…Ni supported on Si-pillared montmorillonite systems have been prepared and studied as catalysts for the test reaction of benzene hydrogenation. The…”
Get full text

Catalytic co-hydroprocessing of gasoil–palm oil/AVO mixtures over a NiMo/γ-Al2O3 catalyst by Vonortas, A., Kubička, D., Papayannakos, N.

“…[Display omitted] •Gas oil HDS on a NiMo/Al2O3 catalyst was not affected by the vegetable oil presence.•Gaseous and liquid phase analysis showed the same…”
Get full text

Simulation of the operation of an industrial wet flue gas desulfurization system by Kallinikos, L.E., Farsari, E.I., Spartinos, D.N., Papayannakos, N.G.

“…In this work the simulation of a wet flue gas desulfurization (FGD) unit with spray tower of a power plant is presented, aiming at an efficient follow-up and…”
Get full text

Vegetable oil effect on gasoil HDS in their catalytic co-hydroprocessing by Templis, Ch, Vonortas, A., Sebos, I., Papayannakos, N.

“…[Display omitted] ► The desulphurization rates of the sulphur bearing molecules in gasoil decrease with the addition of the vegetable oil up to 5%. ► The…”
Get full text

Effect of Palm Oil Content on Deep Hydrodesulfurization of Gas Oil–Palm Oil Mixtures by Vonortas, A, Templis, Ch, Papayannakos, N

“…Co-processing of gas oil and vegetable oils for the production of diesel–green diesel mixtures aims at producing deep hydrodesulphurized fuels at an acceptable…”
Get full text

Kinetics of the non-catalytic transesterification of soybean oil by Diasakou, M., Louloudi, A., Papayannakos, N.

“…A study on the thermal non-catalytic transesterification of soybean oil with methanol is presented. Experiments have been carried out at 220 and 235°C with…”
Get full text

Heterogeneously Catalyzed Esterification of FFAs in Vegetable Oils by Pasias, S., Barakos, N., Alexopoulos, C., Papayannakos, N.

“…The production of methyl esters (biodiesel) from free fatty acids (FFAs) contained in vegetable oils was studied using a heterogeneous acid catalyst. The…”
Get full text

Biodiesel and biohydrogen production from cotton-seed cake in a biorefinery concept by Panagiotopoulos, I.A., Pasias, S., Bakker, R.R., de Vrije, T., Papayannakos, N., Claassen, P.A.M., Koukios, E.G.

“…► We extracted the vegetable crude cotton seed oil from cotton seed cake (CSC). ► We produced biodiesel by alkaline reaction and characterized the final…”
Get full text

Study of the catalyst deactivation in an industrial gasoil HDS reactor using a mini-scale laboratory reactor by Kallinikos, L.E., Bellos, G.D., Papayannakos, N.G.

“…The activity of a hydrodesulphurization catalyst loaded in an industrial hydrotreater is studied at start up and end of run. Catalyst initial and final…”
Get full text

Catalytic wet peroxide oxidation over mixed (Al–Fe) pillared clays by Barrault, J, Abdellaoui, M, Bouchoule, C, Majesté, A, Tatibouët, J.M, Louloudi, A, Papayannakos, N, Gangas, N.H

“…Mixed (Al–Fe) pillared clays are very efficient solid catalysts for oxidation of organic compounds in water by hydrogen peroxide. We have shown that in rather…”
Get full text

The use of a three phase microreactor to investigate HDS kinetics by Bellos, G.D, Papayannakos, N.G

“…Hydrodesulphurization (HDS) kinetics of a straight run heavy gas oil has been studied using data collected from a trickle bed microreactor loaded with a…”
Get full text

Gas-Liquid Mass Transfer in a Bench-Scale Trickle Bed Reactor used for Benzene Hydrogenation by Metaxas, K., Papayannakos, N.

“…The gas‐liquid mass transfer coefficients (MTCs) of a trickle bed reactor used for the study of benzene hydrogenation were investigated. The Ni/Al2O3 catalyst…”
Get full text

Catalytic Cracking of Polyethylene over Clay Catalysts. Comparison with an Ultrastable Y Zeolite by Manos, George, Yusof, Isman Y, Papayannakos, Nikos, Gangas, Nicolas H

“…The catalytic cracking of polyethylene has been studied over two natural clays and their pillared analogues with a view toward assessing their suitability in a…”
Get full text

Hydrogenation of benzene on Ni/Al-pillared montmorillonite catalysts by Louloudi, A, Papayannakos, N

“…Ni on Al-pillared montmorillonite systems were prepared and tested as hydrogenation catalysts using hydrogenation of benzene as a test reaction. Catalytic…”
Get full text

Modelling of the performance of industrial HDS reactors using a hybrid neural network approach by Bellos, G.D., Kallinikos, L.E., Gounaris, C.E., Papayannakos, N.G.

“…A hybrid neural network model is presented for the simulation of the performance of industrial HDS reactors. This model can be used in estimating the catalyst…”
Get full text

An improved weighted average reactor temperature estimation for simulation of adiabatic industrial hydrotreaters by Stefanidis, G.D., Bellos, G.D., Papayannakos, N.G.

“…A study on the improvement of the representative operating temperature from the temperature profile of an industrial adiabatic reactor is presented. This…”
Get full text

Hydrogenation of benzene on Ni/Al-pillared saponite catalysts by Louloudi, A., Michalopoulos, J., Gangas, N.-H., Papayannakos, N.

“…Benzene hydrogenation has been employed as a test reaction for examining Nickel on Al-pillared saponite systems as hydrogenation catalysts. Catalytic activity…”
Get full text

The gas–liquid contacting effect on the operation of small scale upflow hydrotreaters by Bellos, G.D., Gotsis, K.P., Papayannakos, N.G.

“…The effect of reactor geometry and bed dilution on the extent of gas oil hydrodesulfurization was tested by conducting hydrodesulfurization experiments in two…”
Get full text