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Open AccessArticle

Kinetic Modelling of the Aqueous-Phase Reforming of Fischer-Tropsch Water over Ceria-Zirconia Supported Nickel-Copper Catalyst

1
VTT Technical Research Centre of Finland Ltd., FI-02044 VTT Espoo, Finland
2
Department of Chemical and Metallurgical Engineering, Aalto University, P.O. Box 16100, FI-00076 Aalto, Finland
*
Author to whom correspondence should be addressed.
Both authors contributed equally to this work.
Catalysts 2019, 9(11), 936; https://doi.org/10.3390/catal9110936
Received: 20 September 2019 / Revised: 30 October 2019 / Accepted: 5 November 2019 / Published: 8 November 2019
(This article belongs to the Special Issue Catalytic Applications of CeO2-Based Materials)
In the Fischer–Tropsch (FT) synthesis, a mixture of CO and H2 is converted into hydrocarbons and water with diluted organics. This water fraction with oxygenated hydrocarbons can be processed through aqueous-phase reforming (APR) to produce H2. Therefore, the APR of FT water may decrease the environmental impact of organic waters and improve the efficiency of the FT process. This work aimed at developing a kinetic model for the APR of FT water. APR experiments were conducted with real FT water in a continuous packed-bed reactor at different operating conditions of temperature (210–240 °C), pressure (3.2–4.5 MPa) and weight hourly space velocity (WHSV) (40–200 h−1) over a nickel-copper catalyst supported on ceria-zirconia. The kinetic model considered C1-C4 alcohols as reactants, H2, CO, CO2 and CH4 as the gaseous products, and acetic acid as the only liquid product. The kinetic model included seven reactions, the reaction rates of which were expressed with power law equations. The kinetic parameters were estimated with variances and confidence intervals that explain the accuracy of the model to estimate the outlet liquid composition resulting from the APR of FT water. The kinetic model developed in this work may facilitate the development of APR to be integrated in a FT synthesis process. View Full-Text
Keywords: kinetic modelling; aqueous-phase reforming; Fischer–Tropsch water; nickel-based catalyst kinetic modelling; aqueous-phase reforming; Fischer–Tropsch water; nickel-based catalyst
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MDPI and ACS Style

Coronado, I.; Arandia, A.; Reinikainen, M.; Karinen, R.; Puurunen, R.L.; Lehtonen, J. Kinetic Modelling of the Aqueous-Phase Reforming of Fischer-Tropsch Water over Ceria-Zirconia Supported Nickel-Copper Catalyst. Catalysts 2019, 9, 936.

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