Cobalt dispersed on SrO-ZrO2 mixed oxide catalysts were prepared by varying the ratios of Sr and Zr. These catalysts were studied for hydrogen production from glycerol steam reforming. The physico-chemical characteristics of the catalysts were investigated by different techniques. Among all the catalysts, 15 %Co dispersed on SrO-ZrO2 with a 1:1 ratio of Sr and Zr catalyst exhibited the best activity with complete transformation of glycerol into gaseous products (H2, CH4, CO and CO2) with 73 % hydrogen yield. The catalyst activity varied with the change in Sr-Zr ratio where the redox properties of ZrO2 improved the water gas shift reaction in glycerol steam reforming. The characterization results reveal that the high activity of the catalyst is mainly due to the presence of a greater number of octahedral sites, small Co particles, Sr-Zr-Co-O solid solution, strong metal support interactions, and basicity. The catalyst is highly stable as it showed consistent performance during time on stream analysis conceded for a period of 50 h.

中文翻译：

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了解 Co3O4 基催化剂的 SrO-ZrO2 混合氧化物载体对甘油蒸汽重整生产 H2 的作用


通过改变 Sr 和 Zr 的比例，制备了分散在 SrO-ZrO2 混合氧化物催化剂上的钴。研究了这些催化剂用于从甘油蒸汽重整中制氢。通过不同的技术研究了催化剂的物理化学特性。在所有催化剂中，15 %Co 分散在 SrO-ZrO2 上，Sr 和 Zr 催化剂的比例为 1：1，表现出最佳的活性，甘油完全转化为气态产物（H2、CH4、CO 和 CO2），氢气产率为 73%。催化剂活性随 Sr-Zr 比的变化而变化，其中 ZrO2 的氧化还原性能改善了甘油蒸汽重整中的水气变换反应。表征结果表明，催化剂的高活性主要是由于存在更多的八面体位点、小的 Co 颗粒、Sr-Zr-Co-O 固溶体、强金属载体相互作用和碱度。该催化剂高度稳定，因为它在 50 h 的流分析期间表现出一致的性能。