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Now showing items 31-40 of 58
Alternative acid catalysts for the stable and selective direct conversion of CO2/CO mixtures into light olefins
(Elsevier, 2022-12)
Different acid catalysts (silicoaluminophosphates (SAPOs) -34, −18, and − 11, and HZSM-5 zeolite) were tested as components of In2O3-ZrO2/acid tandem catalysts in the direct synthesis of light olefins by hydrogenation of ...
Comparison of the NiAl2O4 derived catalyst deactivation in the steam reforming and sorption enhanced steam reforming of raw bio-oil in packed and fluidized-bed reactors
(Elsevier, 2023-02)
The choice of appropriate reactors and reforming strategies is key to make progresses on scaling up H2 production processes from raw bio-oil. This work compares the performance (conversion, product yields and deactivation) ...
Hydrogen Pressure as a Key Parameter to Control the Quality of the Naphtha Produced in the Hydrocracking of an HDPE/VGO Blend
(MDPI, 2022-05-16)
The hydrocracking of high-density polyethylene (HDPE) blended with vacuum gas oil (VGO) has been studied to assess the effect of H2 pressure on the yield and composition of the products and with the aim of obtaining ...
Solid-fluid mixing behavior of conical spouted beds with internal devices
(Elsevier, 2023-09)
The effect of draft tubes and fountain confiner on the gas and solids mixing behavior is studied in conical
spouted beds. Accordingly, the bed porosity has been determined in different hydrodynamic regimes of
1:1; 1:25 ...
Appraisal of agroforestry biomass wastes for hydrogen production by an integrated process of fast pyrolysis and in line steam reforming
(Elsevier, 2023-12)
The pyrolysis and in line steam reforming of different types of representative agroforestry biomass wastes (pine wood, citrus wastes and rice husk) was performed in a two-reactor system made up of a conical spouted bed and ...
Deactivation of Ni spinel derived catalyst during the oxidative steam reforming of raw bio-oil
(Elsevier, 2020-05-12)
Deactivation of a bulk catalyst derived from NiAl2O4 spinel during the oxidative steam reforming (OSR) of raw bio-oil has been studied. The experiments were performed in a continuous system with two units in series: a ...
Co-cracking of high-density polyethylene (HDPE) and vacuum gasoil (VGO) under refinery conditions
(Elsevier B.V., 2020-02)
The co–cracking of a 5 wt% of high–density polyethylene (HDPE) dissolved in vacuum gasoil (VGO) under conditions similar to those of the industrial fluid catalytic cracking (FCC) unit has been studied. The main goal has ...
Kinetic modeling of CO2 + CO hydrogenation to DME over a CuO-ZnO-ZrO2@SAPO-11 core-shell catalyst
(Elsevier, 2020-09-01)
A kinetic model for the CO2 + CO hydrogenation to dimethyl ether (DME) in a single step over an original core-shell structured CuO-ZnO-ZrO2@SAPO-11 bifunctional catalyst (metallic in the core and acid in shell) has been ...
Taking advantage of the excess of thermal naphthas to enhance the quality of FCC unit products
(Elsevier B.V., 2020-09-26)
Today, many European refineries finish up with excess of low-quality thermal naphthas that are hard to be marketed and, commonly, end being absorbed by catalytic naphthas at the expense of their higher quality. In this ...
Macro-kinetic model for CuO-ZnO-ZrO2@SAPO-11 core-shell catalyst in the direct synthesis of DME from CO/CO2
(Elsevier, 2021-01-14)
An original kinetic model has been used to describe the performance of an original CuO-ZnO-ZrO2@SAPO-11 bifunctional catalyst on the one-stage synthesis of dimethyl ether (DME) from CO/CO2 hydrogenation. The model considers ...