A series of different M/TiO2 catalysts are prepared, where M = Au, Pt, Pd and Ag, with a 0.2 wt% loading, tested for activity as photocatalysts the water gas shift reaction, WGSR, using continuous flow, phase reactor. For both thermal (dark) photocatalytic (UV irradiated) WGSR best catalyst/photocatalyst is Au/TiO2. The kinetics studied function reactor temperature, Au loading concentrations CO...

The gasification of biomass is a promising technique to generate different forms of valuable alternative energy, including direct thermal energy and further conversion of synthesis gas to clean liquid fuels or chemicals via Fischer– Tropsch synthesis (FTS) [1–5]. The ideal H2/CO ratio for FTS is ~2/1 based on the stoichiometry. However, The H2/ CO for the synthesis gas obtained from biomass gas...

Hydrogen as a high-quality and clean energy carrier has attracted renewed and ever-increasing attention around the world in recent years, mainly due to developments in fuel cells and environmental pressures including climate change issues. In thermochemical processes for hydrogen production from fossil fuels, separation and purification is a critical technology. Where water-gas shift reaction i...

In this paper we present the conceptual design for the optimization of FT-diesel production process from switchgrass via gasification of biomass. We propose a limited superstructure where the process starts with the gasification of the biomass. Two different alternatives are evaluated, direct and indirect gasification. The gas obtained is cleaned up and its composition adjusted in terms of the ...

Hydrothermal gasification (HTG) experiments were carried out to extract hydrogen from biomass. Although extensive research has been conducted on production with HTG, limited exists the use of biochar as a raw material. In this study, woodland residues (wood chip) and wood-chip pyrolysis used in HTG treatment generate hydrogen. This investigated effect temperature (300–425 °C) biomass/water (0.5...

Introduction The growing demand of energy in many industrial fields requires the conceiving of more efficient production and utilization systems in a logic of sustainable development. Hydrogen results one of the more attractive energy carrier for its versatility ranging from stationary and mobile applications, as clean fuel, to the use in different refinery processes. In the last years, signifi...

kinetic modeling is an important issue, whose objective is the accurate determination of the rates of various reactions taking place in a reacting system. this issue is a pivotal element in the process design and development particularly for novel processes which are based on reactions taking place between various types of species. the fischer tropsch (ft) reactions have been used as the kineti...

in this work, we have calculated the joule-thomson inversion curve of two important associating fluids, namely water and methanol, from the saft equation of state. comparisons with the available experimental data, for water and methanol indicate that this molecular based equation of state gives good prediction of the low temperature branch; but, unfortunately, due to lack of isenthalpic data fo...