Sorption Enhanced Steam Reforming of Glycerol: Use of La-Modified Ni/Al2O3 as Catalyst

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• 作者：Nuria Sánchez ; J. María Encinar ; J. Félix González
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2016
• 出版时间：April 6, 2016
• 年：2016
• 卷：55
• 期：13
• 页码：3736-3741
• 全文大小：332K
• ISSN：1520-5045

文摘

Glycerol is being produced on a massive scale as a byproduct of biodiesel. In this work, glycerol steam reforming was improved by CO₂ abatement to obtain high-value gases. CaO and activated dolomite were used as sorbents, and these results were compared to reactions using Al₂O₃ and MgO. The effect of packing material was evaluated at 600, 700, 800, and 850 °C. Hydrogen production was promoted either in the presence of a sorbent at 600 °C or at higher temperatures with any of the packing material. Sorbents also affected the water gas shift reaction, decreasing the CO concentration. Simultaneous use of Ni/La₂O₃/Al₂O₃ and CaO improved gas production and hydrogen selectivity. The H₂ percentage in the produced gas was close to 70% and around 5 mol of H₂ was produced per mole of glycerol. Catalyst and sorbent were used for several reaction cycles.