Autothermal reforming and water-gas shift double bed reactor for H-2 production from ethanol

作者：Nieto Marquez A^*; Sanchez D; Miranda Dahdal A; Dorado F; de Lucas Consuegra A; Valverde J L

来源：Chemical Engineering and Processing, 2013, 74: 14-18.

DOI：10.1016/j.cep.2013.10.006

• Autothermal reforming
• Water-gas shift
• Ethanol
• Hydrogen production
• Double bed reactor

The present work reports the improvement in the H-2 production from the autothermal reforming of ethanol (ATR) through the addition of a second water-gas shift (WGS) catalytic bed in the same reactor. Thus, three Ni catalysts (ca. 10, 15 and 20%, w/w) supported on Yttria-stabilized zirconia (YSZ) were synthesized for the AIR process and characterized by atomic absorption spectrophotometry (AA), temperature-programmed reduction (TPR), X-ray diffraction (XRD) and N-2 adsorption/desorption. A commercial water-gas shift (WGS) Fe-Cr catalyst was employed for the double bed reactor configuration. The synthesized Ni based catalysts presented almost complete conversion of ethanol at low temperatures (below 400 degrees C) compatible with the WGS process. The addition of a second WGS bed in the same reactor, which works with an additional amount of water, led to a higher production of H-2 and to an important removal of the CO coming from the ATR process. Therefore, the proposed compact reactor configuration shows potential for the simultaneous production and purification of H-2 from ethanol.

• 出版日期2013-12