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Model validation of a packed bed LTA membrane reactor for the direct synthesis of DME from CO/CO2
(2020-10-16)
A model for simulating the direct synthesis of dimethyl ether (DME) in a packed bed membrane reactor (PBMR) has been validated, using a LTA zeolite hydrophilic membrane in a lab-scale reaction equipment. In the model, ...
Experimental implementation of a catalytic membrane reactor for the direct synthesis of DME from H2+CO/CO2
(Elsevier, 2021-01-05)
The direct synthesis of dimethyl ether (DME) by the hydrogenation of CO2 and CO2/COx mixtures has been studied in an original packed bed membrane reactor (PBMR). The role of the hydrophilic LTA zeolite membrane is to remove ...
Global Vision of the Reaction and Deactivation Routes in the Ethanol Steam Reforming on a Catalyst Derived from a Ni–Al Spinel
(ACS, 2024-04)
Ethanol steam reforming (ESR) over a Ni/Al2O3 catalyst prepared by reduction of a NiAl2O4 spinel is a promising alternative route to produce H2 from biomass. This work deepens into the effect of reaction conditions (450–650 ...
Conditioning the volatile stream from biomass fast pyrolysis for the attenuation of steam reforming catalyst deactivation
(Elsevier, 2022-03)
The fast deactivation of the reforming catalyst greatly conditions H2 production from biomass. In order to alleviate this problem, use of conditioning catalysts in a previous conditioning step has been proposed to modify ...
Role of zeolite properties in bio-oil deoxygenation and hydrocarbons production by catalytic cracking
(Elsevier, 2022-03)
A comparison between the behavior of Y and ZSM-5 zeolites having the same Si/Al ratio was established in the catalytic cracking of bio-oil for producing fuels and platform chemicals. The catalysts were prepared by agglomerating ...
In line upgrading of biomass fast pyrolysis products using low-cost catalysts
(Elsevier, 2021-07)
Biomass pyrolysis and the in-line catalytic cracking of the pyrolysis volatile stream has been approached in this study. The pyrolysis step was carried out in a conical spouted bed reactor at 500 °C, whereas the inert sand ...
Coke deactivation and regeneration of HZSM-5 zeolite catalysts in the oligomerization of 1-butene
(Elsevier, 2021-08)
The deactivation phenomenon of HZSM-5 catalysts (SiO2/Al2O3 ratio = 30–280) in the 1-butene oligomerization has been studied. Experiments were performed in a fixed-bed reactor at 175−325 °C; 1.5−40 bar; and, 2−6 g h molC−1. ...
Cracking of plastic pyrolysis oil over FCC equilibrium catalysts to produce fuels: Kinetic modeling
(Elsevier, 2022-05)
The kinetics of the catalytic cracking of plastic pyrolysis oil (PPO) over three FCC (fluid catalytic cracking) equilibrium commercial catalysts has been modeled. The PPO comes from the fast pyrolysis of high-density ...
Intensifying gasoline production in the hydrocracking of pre-hydrotreated light cycle oil by means of Pt and Pd supported on a spent FCC catalyst
(Elsevier, 2023-02)
Motivated by the necessity of intensifying the valorization of secondary refinery streams and of extending the life cycle of the catalysts, this study aims to obtain high quality gasoline in the hydrocracking of a ...
Strategies for the intensification of CO2 valorization in the one-step dimethyl ether synthesis process
(ACS, 2019-12-16)
The intensification of CO2 valorization has been theoretically studied in the direct synthesis of dimethyl ether (DME) carried out in a packed-bed reactor by means of two strategies pursuing the attenuation of the thermodynamic ...