Thermochemical water-splitting for H₂ generation using sol-gel derived Mn-ferrite in a packed bed reactor

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• 作者：Rahul R. Bhosale ; Rajesh V. Shende ; ^{rajesh.shende@sdsmt.edu} ; Jan A. Puszynski
• 关键词：Thermochemical water-splitting ; H2 generation ; Sol-gel technique ; Mn-ferrite ; Porous/nanoparticle morphology ; Packed bed reactor
• 刊名：International Journal of Hydrogen Energy
• 出版年：2012
• 出版时间：February, 2012
• 年：2012
• 卷：37
• 期：3
• 页码：2924-2934
• 全文大小：1355 k

文摘

This paper reports synthesis of Mn-ferrite using sol-gel technique, which involved the addition of Mn and Fe salts in ethanol followed by gelation using propylene oxide (PO). As-prepared gels were aged, dried and calcined rapidly upto different temperatures of 600?¡ãC-900?¡ãC and quenched in air. Calcined powders obtained were analyzed using x-ray diffraction, BET surface area analyzer, scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The gels calcined rapidly upto 600?¡ãC and quenched in air resulted into a phase pure Mn-ferrite with porous/nanoparticle morphology and higher SSA. The H₂ generation ability of the calcined powder was investigated by performing multiple thermochemical cycles in the Inconel packed bed reactor. In addition, the effects of several process parameters such as water-splitting temperature (T_ws), regeneration temperature (T_reg), regeneration time (t_reg) and volumetric flow rate of water (v_o) on H₂ generation ability of Mn-ferrite were investigated in detail.