In the present study, the reaction kinetics and dynamic modeling of a reactor for syngas transformation into dimethyl ether using a mixture of a metallic oxides (CuO, ZnO, and Al2O3) and an acidic component (γ-Al2O3) as the catalyst has been investigated. A combination of the Graaf kinetic model for methanol synthesis and the Bercic model for methanol dehydration was correlated with the experim...

Aqueous phase reforming of glycerol was studied over a series of γ-Al2O3 supported metal nanoparticle catalysts for hydrogen production in a batch reactor. Of the metals studied, Pt/Al2O3 was found to be the most active catalyst under the conditions tested. A further systematic study on the impact of reaction parameters, including stirring speed, pressure, temperature, and substrate/metal molar...

Herein we investigate the use of CuO-ZnO-Al2O3 (CZA) with different solid acid catalysts (NH4ZSM-5, HZSM-5 or γ-Al2O3) for the production of dimethyl ether from syngas. It was found that of the solid acids, which are necessary for the dehydration function of the admixed system, the CZA/HZSM-5 bifunctional catalyst with a 0.25 acid fraction showed high stability over a continuous period of 212 h...

The oxidation performance of a single-phase Pt-modified aluminide coating was assessed in test at 980 °C comparison with the single crystal superalloy. results suggested that exhibited superior resistance. During oxidation, oxide scale formed on bare alloy changed constantly followed by constitution multi-layer structure: An outer mainly consisted Cr2O3 + NiCr2O4 TiO2 scarce protection, and an ...

A series of samples containing 5-wt% or 20-wt% BaO on γ-Al2O3 with different loadings of Pt were prepared and examined for their NO2 adsorption properties using temperature programmed desorption (TPD), temperature programmed reduction (TPR), and x-ray diffraction (XRD). For calcination at 873 K or above, BaO/Al2O3 formed BaAl2O4. While carbonates were found to be unstable on the aluminate phase...