【摘 要】
:
本论文研究了球形介孔含氮碳材料限域LiBH4材料在储氢性能方面的研究。以甲醛和苯酚为前驱体,三聚氰胺为氮源,F127为模板剂,通过聚合反应合成含氮高聚物,然后进一步进行水热反应合成球形高聚物,最后高温活化除去软模板剂得到球形介孔含氮碳材料。同时考察了三聚氰胺添加量和活化温度对碳材料的孔隙结构以及含氮量的影响。我们通过真空浸渍的方法将LiBH4限域到碳材料的孔隙结构中,然后对其进行储氢性能的研究。研
【机 构】
:
大连化学物理研究所,大连,150040 桂林电子科技大学,桂林,541004
【出 处】
:
第十七届全国化学热力学和热分析学术会议
论文部分内容阅读
本论文研究了球形介孔含氮碳材料限域LiBH4材料在储氢性能方面的研究。以甲醛和苯酚为前驱体,三聚氰胺为氮源,F127为模板剂,通过聚合反应合成含氮高聚物,然后进一步进行水热反应合成球形高聚物,最后高温活化除去软模板剂得到球形介孔含氮碳材料。同时考察了三聚氰胺添加量和活化温度对碳材料的孔隙结构以及含氮量的影响。我们通过真空浸渍的方法将LiBH4限域到碳材料的孔隙结构中,然后对其进行储氢性能的研究。研究结果表明,三聚氰胺的添加量越大,含氮量也越高,但同时也造成了孔隙结构的坍塌,不利于形成孔隙结构。另外,提高活化温度可以得到较发达的孔隙结构,但会减少碳材料的含氮量,影响材料的储氢性能。球形介孔含氮碳材料限域的LiBH4表现出了良好的储氢性能。研究结果表明,相比于纯LiBH4,限域后的LiBH4的脱氢温度从430 oC降到了300 oC;同时限制或减少了有害物质B2H6的产生。因此,该材料具有一定的应用前景。
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