Enhanced ethanol steam reforming by CO2 absorption using CaO,CaO*MgO or Na2ZrO3 |
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| Authors: | DY Aceves Olivas MR Baray Guerrero MA Escobedo Bretado M Marques da Silva Paula J Salinas Gutiérrez V Guzmán Velderrain A López Ortiz V Collins-Martínez |
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| Affiliation: | 1. Departamento de Materiales Nanoestructurados, Centro de Investigación en Materiales Avanzados, S.C., Miguel de Cervantes 120, Chihuahua, Chih., México 31109, Mexico;2. Facultad de Ciencias Químicas, Universidad Juárez del Estado de Durango, Av. Veterinaria s/n, Circuito Universitario, Durango, Dgo. 34120, Mexico;3. Laboratory of Synthesis of Multifunctional Complexes, PPGCS, Universidade do Extremo Sul Catarinense, 88806-000 Criciúma, SC, Brazil |
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| Abstract: | This paper presents results of thermodynamic analysis and experimental evaluation of hydrogen production by steam reforming of ethanol (SRE) combined with CO2 absorption using a mixture of a solid absorbent (CaO, CaO*MgO and Na2ZrO3) and a Ni/Al2O3 catalyst. Thermodynamic analysis results indicate that a maximum of 69.5% H2 (dry basis) is feasible at 1 atm, H2O/C2H5OH = 6 (molar ratio) and T = 600 °C. whereas, the addition of a CO2 absorbent at 1 atm, T = 600 °C and H2O/C2H5OH/Absorbent = 6:1:2.5, produced a H2 concentration of 96.6, 94.1, and 92.2% using CaO, CaO*MgO, and Na2ZrO3, respectively. SRE experimental evaluation achieved a maximum of 60% H2. While combining SRE and a CO2 absorbent exhibited a concentration of 96, 94, and 90% employing CaO, CaO*MgO, and Na2ZrO3, respectively at 1 atm, T = 600 °C, SV = 414 h−1 and H2O/C2H5OH/absorbent = 6:1:2.5 (molar ratio). |
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| Keywords: | H2 production Ethanol reforming CO2 capture Na2ZrO3 |
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