Production of a hydrogen-rich gas from fast pyrolysis bio-oils: Comparison between homogeneous and catalytic steam reforming routes

Hydrogen production from pine and poplar bio-oils by catalytic steam reforming. Influence of the bio-oil composition on the process

“…It implies an excess of water, which is beneficial for shifting the WGS equilibrium towards H 2 production and also helps the gasification of the possible carbonaceous deposits on the catalyst surface. More information about this procedure can be found in our previous communication [22].…”

“…This experimental characterisation method is fully described in our previous communication [22]. The water content of the aqueous fractions was determined by the Karl Fisher titration method using a Mettler Toledo V20 volumetric titrator.…”

“…The permanent gases exiting the condensation system were analysed online with a micro gas chromatograph equipped with thermal conductivity detectors. More details concerning the set-up can be found in our previous communications [22,23]. All these experiments were carried out at a temperature of 650 ºC and atmospheric pressure during 2 h, employing a spatial time, defined as the mass of catalyst/organics flow rate ratio (W/m org ), of 4 g catalyst min/g organics.…”

“…A Ni-Co/Al-Mg catalyst, which has been proved to be suitable for the catalytic steam reforming of bio-oil aqueous fractions [22,23], was selected for this work. This catalyst includes Ni as the active phase.…”

“…Consequently, this is the most realistic option for studying the influence of the chemical composition on the process. Real aqueous fractions obtained from pine, poplar, sawdust and beech wood feedstock have been used in several works [5,[18][19][20][21][22][23]. These works focused on studying operating conditions, developing suitable catalysts and testing different reactors.…”