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Nature and Location of Carbonaceous Species in a Composite HZSM-5 Zeolite Catalyst during the Conversion of Dimethyl Ether into Light Olefins
(MDPI, 2017-09)
The deactivation of a composite catalyst based on HZSM-5 zeolite (agglomerated in a matrix using boehmite as a binder) has been studied during the transformation of dimethyl ether into light olefins. The location of the ...
Capability of the Direct Dimethyl Ether Synthesis Process for tCapability of the Direct Dimethyl Ether Synthesis Process for the Conversion of Carbon Dioxide
(MDPI, 2018-05)
The direct synthesis of dimethyl ether (DME) is an ideal process to achieve the environmental objective of CO2 conversion together with the economic objective of DME production. The effect of the reaction conditions ...
Oxidative Steam Reforming of Raw Bio-Oil over Supported and Bulk Ni Catalysts for Hydrogen Production
(MDPI, 2018-08)
Several Ni catalysts of supported (on La2O3-alpha Al2O3, CeO2, and CeO2-ZrO2) or bulk types (Ni-La perovskites and NiAl2O4 spinel) have been tested in the oxidative steam reforming (OSR) of raw bio-oil, and special attention ...
A sequential process for hydrogen production based on continuous HDPE fast pyrolysis and in-line steam reforming
(Elsevier, 2016-07-15)
A continuous process has been developed consisting in the flash pyrolysis (500 ºC) of high density polyethylene (HDPE) in a conical spouted bed reactor (CSBR) followed by steam reforming in a fluidized bed reactor (Ni ...
Catalysts of Ni/α-Al2O3 and Ni/La2O3-αAl2O3 for hydrogen production by steam reforming of bio-oil aqueous fraction
(Elsevier, 2012-12-04)
This paper reports on the steam reforming, in continuous regime, of the aqueous fraction of bio-oil obtained by flash pyrolysis of lignocellulosic biomass (sawdust). The reaction system is provided with two steps in series: ...
A comparative thermodynamic study on the CO2 conversion in the synthesis of methanol and of DME
(Elsevier, 2017-02-01)
A thermodynamic approach of the synthesis processes of methanol and DME from H2+CO+CO2 has been conducted, in order to compare the feasibility of incorporating CO2 in the feed of both processes. The effects of reaction ...
Coking and sintering progress of a Ni supported catalyst in the steam reforming of biomass pyrolysis volatiles
(Elsevier, 2018-10)
The valorization of biomass (pine wood) for hydrogen production has been studied in a
two-step process, comprising pyrolysis and subsequent steam reforming of the volatiles
produced in the first step. This work focuses ...
Comparison of Ni based and Rh based catalysts performance in the oxidative steam reforming of raw bio-oil
(ACS, 2017-06-17)
The effect of O2 content in the oxidative steam reforming (OSR) of raw bio-oil has been studied, and the kinetic behavior, particularly deactivation, has been compared between two catalyst (Ni/La2O3-αAl2O3 and Rh/CeO2-ZrO2). ...
Deactivation kinetics for the conversion of dimethyl ether to olefins over a HZSM-5 zeolite catalyst
(2016-11-16)
A deactivation kinetic equation for the conversion of dimethyl ether (DME) to olefins (DTO process) has been established. The catalyst has been prepared with a HZSM-5 zeolite (SiO2/Al2O3 ratio of 280) agglomerated with ...
Effect of calcination/reduction conditions of Ni/La2O3–αAl2O3 catalyst on its activity and stability for hydrogen production by steam reforming of raw bio-oil/ethanol
(Elsevier, 2014-04-05)
The influence of calcination and reduction temperatures of Ni/La2O3–αAl2O3 catalyst used in the steam reforming of raw bio-oil was studied in the 550–850 °C range. The experiments were conducted by continuously feeding a ...