Steam reforming of methanol over a CuO/ZnO/Al2O3 catalyst part II: A carbon membrane reactor
2011; Elsevier BV; Volume: 66; Issue: 22 Linguagem: Inglês
10.1016/j.ces.2011.06.074
ISSN1873-4405
AutoresSandra Sá, José M. Sousa, Adélio Mendes,
Tópico(s)Catalysis and Hydrodesulfurization Studies
ResumoThe reaction of methanol steam reforming was studied in a carbon membrane reactor over a commercial CuO/ZnO/Al2O3 catalyst (Süd-Chemie, G66 MR). Carbon molecular sieve membranes supplied by Carbon Membranes Ltd. were tested at 150 °C and 200 °C. The carbon membrane reactor was operated at atmospheric pressure and with vacuum at the permeate side, at 200 °C. High methanol conversion and hydrogen recovery were obtained with low carbon monoxide permeate concentrations. A sweep gas configuration was simulated with a one-dimensional model. The experimental mixed-gas permeance values at 200 °C were used in a mathematical model that showed a good agreement with the experimental data. The advantages of using water as sweep gas were investigated in what concerns methanol conversion and hydrogen recovery. The concentration of carbon monoxide at the permeate side was under 20 ppm in all simulation runs. These results indicate that the permeate stream can be used to feed a polymer electrolyte membrane fuel cell.
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