Hydrogen production from catalytic supercritical water reforming of glycerol with cobalt-based catalysts

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• 作者：Thirasak Pairojpiriyakul^a ; Eric Croiset^b ; ^{ecroiset@uwaterloo.ca} ; Worapon Kiatkittipong^c ; Kunlanan Kiatkittipong^d ; Amornchai Arpornwichanop^a ; Suttichai Assabumrungrat^a ; ^{Suttichai.A@chula.ac.th}
• 关键词：Hydrogen production ; Supercritical water ; Glycerol reforming ; Cobalt-based catalysts
• 刊名：International Journal of Hydrogen Energy
• 出版年：2013
• 出版时间：15 April, 2013
• 年：2013
• 卷：38
• 期：11
• 页码：4368-4379
• 全文大小：623 K

文摘

Glycerol reforming under catalytic supercritical water at temperatures in the range of 723-848?K using Co catalyst deposited on various supports including ZrO₂, yttria-stabilized zirconia (YSZ), La₂O₃, ¦Ã-Al₂O₃, and ¦Á-Al₂O₃ was investigated. An increase in operating temperature promoted the continued increase in glycerol conversion; however, carbon formation causing system operation failure was observed for ¦Ã-Al₂O₃ and ¦Á-Al₂O₃ at high operating temperatures (i.e. 748-798?K). Co supported on YSZ provided the most efficient performance for hydrogen production. 10?wt. % Co loading on YSZ support was an optimum amount to enhance the reaction. The increase in glycerol conversion and reduction of the amount of liquid products were observed for lower weight hourly space velocity (WHSV), higher operating temperature or higher cobalt loading. On Co/YSZ catalyst, glycerol conversion of 0.94 and hydrogen yield of 3.72 was obtained with WHSV of 6.45?h^?1at 773?K.