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Kinetic modeling of the direct synthesis of dimethyl ether over a CuO-ZnO-MnO/SAPO-18 catalyst and assessment of the CO2 conversion
(Elsevier, 2018-12-01)
A kinetic model has been established for the direct synthesis of dimethyl ether (DME) from syngas and CO2 feeds. The kinetic parameters have been determined fitting the experimental results obtained using a CuO-ZnO-MnO/SAPO-18 ...
Lessening coke formation and boosting gasoline yield by incorporating scrap tire pyrolysis oil in the cracking conditions of an FCC unit
(Elsevier, 2020-11-15)
We have studied the effect of adding scrap tire pyrolysis oil (STPO) as feed or co-feed in the cracking of vacuum gasoil (VGO) using a commercial equilibrated catalyst. The cracking experiments were performed in a laboratory ...
Energetic viability of a polyolefin pyrolysis plant
(American Chemical Society, 2018-03)
The energetic viability of a polyolefin pyrolysis unit that could be installed in a refinery plant was examined. Thermal pyrolysis at 500 and 700 degrees C, and the catalytic cracking by means of HZSM-5 and HY catalysts ...
Implementation of a borescopic technique in a conical spouted bed for tracking spherical and irregular particles
(Elsevier, 2019-05-22)
[ES] Se ha desarrollado y validado una metodología basada en la técnica boroscópica para seguir el movimiento del sólido dentro de un reactor spouted bed cónico. El procedimiento desarrollado y perfeccionado permite ...
Hydrogen production by steam reforming of bio-oil/bio-ethanol mixtures in a continuous thermal-catalytic process
(Elsevier, 2014-04-24)
The feasibility of the steam reforming of bio-oil aqueous fraction and bio-ethanol mixtures has been studied in a continuous process with two in-line steps: thermal step at 300 ºC (for the controlled deposition of pyrolytic ...
Insight into the deactivation and regeneration of HZSM-5 zeolite catalysts in the conversion of dimethyl ether to olefins
(ACS, 2018-09-19)
The impact of different process variables affecting the coking and rejuvenation of HZSM-5 zeolite catalyst has been studied during the conversion of dimethyl ether (DME) to olefins in a fixed bed reactor. Those variables ...
On the dynamics and reversibility of the deactivation of a Rh/CeO2-ZrO2 catalyst in raw bio-oil steam reforming
(Elsevier, 2019-01-28)
The deactivation mechanism of a commercial Rh/CeO2-ZrO2 catalyst in raw bio-oil steam reforming has been studied by relating the evolution with time on stream of the bio-oil conversion and products yields and the physicochemical ...
Optimum Operating Conditions in Ethanol Steam Reforming over a Ni/La2O3-αAl2O3 catalyst in a Fluidized Bed Reactor
(Elsevier, 2018-01-01)
This manuscript analyzes the steam reforming of ethanol (SRE) over a Ni/La2O3-Al2O3 catalyst in a fluidized bed reactor under a wide range of operating conditions (500-650 ºC, space time up to 0.35 gcatalysth/gEtOH, and ...
Towards waste refinery: Co-feeding HDPE pyrolysis waxes with VGO into the catalytic cracking unit
(Elsevier Ltd., 2020-01-28)
The co-feeding of high-density polyethylene pyrolysis waxes (HDPE waxes) with vacuum gasoil (VGO) on the catalytic cracking has been investigated. Runs have been conducted by feeding a blend of HDPE waxes/VGO (1/4 in mass) ...
Origin and nature of coke in ethanol steam reforming and its role in deactivation of Ni/La2O3-αAl2O3 catalyst
(ACS, 2019-07-22)
Deactivation of Ni/La2O3-αAl2O3 catalyst in the ethanol steam reforming (ESR) was studied in order to establish the optimal conditions for maximizing H2 production and achieving a steady behaviour. The ESR reactions were ...