以碳酸钠为催化剂、水为溶剂,间苯三酚(P)-乙醛(A)为反应前驱体,经溶胶-凝胶、交联老化、二氧化碳超临界干燥制备出间苯三酚-乙醛有机气凝胶(PA).对PA有机气凝胶前驱体反应机制和结构的研究发现,单体的凝胶范围主要集中在间苯三酚和碳酸钠催化剂(C)的物质的量之比为20～60,孔结构主要以介孔和大孔为主,介孔数目可达65%以上.
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