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- W2753803023 abstract "Abstract Kinetics of the steam reforming (SR) of bio-oil over a Ni/La2O3-αAl2O3 catalyst is investigated in a two-step reaction system, which consists of a first thermal unit for pyrolytic lignin separation, followed by on-line reforming in a fluidized bed reactor where the catalyst is located. The kinetic data were obtained under the following operating conditions: 550–700 °C; steam-to-carbon ratio in the feed (S/C), 1.5–6.0; space–time, of up to 0.38 gcatalysth/gBO; time on stream, up to 5 h. Experiments in the absence of catalyst were also carried out with a view to quantifying the contribution of thermal routes of bio-oil decomposition. A kinetic scheme with six reaction steps is assumed for the process, and contribution of thermal and catalytic routes are considered in the kinetic equations. The reaction steps are: i) SR of bio-oil (C3.9H6.1O3.0); ii) water–gas-shift (WGS) reaction; iii) bio-oil decomposition (thermal/catalytic) into (CO + CH4 + H2); iv) bio-oil decomposition (thermal/catalytic) into (CO2 + hydrocarbons + H2); v) methane SR and vi) hydrocarbons SR. The kinetic model also considers the catalyst deactivation by means of a deactivation equation, which is dependent on the partial pressure of bio-oil oxygenates. The complete kinetic model proposed is suitable for predicting the evolution with time on stream of the concentration of products (H2, CO2, CO, CH4, hydrocarbons), un-reacted bio-oil and water in the reaction medium for the whole range of operating conditions studied." @default.
- W2753803023 created "2017-09-15" @default.
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- W2753803023 date "2018-01-01" @default.
- W2753803023 modified "2023-09-29" @default.
- W2753803023 title "Kinetic model considering catalyst deactivation for the steam reforming of bio-oil over Ni/La2O3-αAl2O3" @default.
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- W2753803023 doi "https://doi.org/10.1016/j.cej.2017.09.063" @default.
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