Prozesu Katalitikoak eta Hondakinen Balioztatzea

Ikerketa Taldea

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La semana pasada Lide Oar Arteta entregó el borrador de su Tesis Doctoral, que lleva por título: DESARROLLO DEL CATALIZADOR Y MODELADO CINETICO DEL REFORMADO CON VAPOR DE DIMETIL ETER El trabajo ha sido dirigido por Ana G. Gayubo y Andrés T. Aguayo, y su defensa pública se prevé para dentro de un par de meses. Lan bikaina, Lide!

[ABSTRACT] Propylene production in the transformation of ethylene has been studied on HZSM-5 zeolite catalysts of different SiO2/Al2O3 ratio (30, 80 and 280), doped (1 wt.%) with K or P or treated by mild in situ steaming, in order to attenuate their acidity. The experiments have been carried out in a fixed bed reactor at 500 °C, space time of 3.2 (gcatalyst h)(molCH2)−13.2 (gcatalyst...

[ABSTRACT] The transformation of 1-butene was studied in order to intensify propylene production on catalysts prepared based on HZSM-5 zeolites of different SiO2/Al2O3 ratio modified as follows: (i) by incorporating K or P (1–5 wt.%) and (ii) subject to mild in situ steaming. The effect of zeolite modifications on the catalyst physical and acid properties and on their kinetic performance...

[ABSTRACT] The deactivation of HZMS-5 and SAPO-34 catalysts has been studied in the transformation of ethylene and 1-butene under propylene intensification conditions. The deterioration of spent catalysts’ physical properties have been quantified and coke has been characterized by TPO and by several spectroscopic techniques (Raman, 13C NMR, FTIR, FTIR-TPO), in order to determine the effect...

[ABSTRACT] The effect operating conditions have in the selective transformation of 1-butene into propylene has been studied on a catalyst of HZSM-5 zeolite (SiO2/Al2O3 = 280) modified with 1 wt % K (of moderate acid strength) and agglomerated with bentonite and alumina. The kinetic runs have been performed in a fixed bed reactor under the following operating conditions: 400–600 °C; space...

Ayer Aitziber Erkiaga entregó el borrador de su Tesis Doctoral, que lleva por título: GASIFICACION CON VAPOR DE BIOMASA Y PLASTICOS EN SPOUTED BED CONICO El trabajo ha sido dirigido por Martin Olazar y Javier Bilbao, y su defensa pública se prevé para dentro de un par de meses. Lan bikaina, Aitziber!

[ABSTRACT] Pinewood sawdust has been gasified by using steam as gasifying agent in a conical spouted bed reactor operating in continuous regime. A study has been made of the effect of temperature (in the 800–900 °C range), steam/biomass ratio (between 0 and 2) and sawdust particle size (0.3–1, 1–2 and 2–4 mm ranges) on the distribution of products (gas, tar and char) and their composition...