Effect of manufacturing conditions on properties of electroless deposited Co–P/Ni foam catalyst for hydrolysis of sodium borohydride solution
Effect of manufacturing conditions on properties of electroless deposited Co–P/Ni foam catalyst for hydrolysis of sodium borohydride solution
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DOI：
10.1016/j.ijhydene.2012.08.053
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发表时间：
2012-11
影响因子：
7.2
通讯作者：
T. Oh;Sejin Kwon
中科院分区：
文献类型：
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作者：
T. Oh;Sejin Kwon
研究了沉积时间、镀液pH值和温度对化学沉积Co-P/Ni泡沫催化剂的沉积速率、每沉积1 g催化剂的产氢速率、表面形貌、催化剂颗粒分布和微观结构的影响。各因素对沉积效果的影响程度依次为：pH >温度>沉积时间。考察了热处理温度对催化剂的耐久性和催化活性的影响。耐久性略有增加，热处理，但氢的产生减少，由于钠烧结和氧化膜的形成。最佳工艺条件为：pH值12.0，温度50 °C，沉积时间30 min，不进行热处理。在最佳条件下，沉积的催化剂的重量百分比和每1g沉积的催化剂的氢生成速率分别为4.86wt%和1.49L/min g（沉积的催化剂）。在最佳条件下制备的催化剂的表观活化能为46.8kJ/mol。制造条件显著影响催化剂性质。
The effects of the deposition time and coating bath with various pH and temperatures on the deposition rate, hydrogen generation rate per deposited catalyst of 1 g, surface morphology, catalyst particle distribution, and microstructure of electroless deposited Co–P/Ni foam catalysts were investigated. The degree of the effects of the parameters was in the following order: pH > temperature > deposition time. The effects of heat treatment temperature on the durability and catalytic activity were also investigated. Durability increased slightly in response to heat treatment, but hydrogen generation reduced owing to sodium sintering and oxide film formation. The optimum conditions were 12.0 (pH), 50 °C (temperature), and 30 min (deposition time) without heat treatment. The weight percent of the deposited catalyst and hydrogen generation rate per deposited catalyst of 1 g under the optimum conditions were 4.86 wt% and 1.49 L/min g (deposited catalyst), respectively. The apparent activation energy of the catalyst manufactured under the optimum conditions was 46.8 kJ/mol. The manufacturing conditions considerably affected the catalyst properties.