以间苯二酚和甲醛为原料,氢氧化钠为催化剂,采用溶胶-凝胶法及溶剂置换、常压干燥、炭化等后续工艺,实现了块状炭气凝胶的常压干燥法制备,并考察了稀释比对气凝胶结构性能的影响.采用XRD、BET、SEM及IR等方法对样品进行表征.结果表明:采用氢氧化钠为催化剂制备的炭气凝胶为非晶态,表观密度为1.10 g/cm3,比表面积为620 m2/g,平均孔径为16.0 nm.实验表明,较低的稀释比更有利于制备出表现密度较小、比表面积较高的炭气凝胶.
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