以线型酚醛树脂为前驱体,采用溶液混合法将Y(NO3)3或Ce(NO3)3掺杂在其中,通过水蒸气活化制备含有大量中孔的酚醛树脂基活性炭.利用红外光谱(IR)、热重(TG)分析、N2吸附、扫描电镜(SEM)等对酚醛树脂以及其相应的活性炭进行表征.结果表明:掺杂Y(NO3)3或Ce(NO3)3可以提高水蒸气活化的速率,促进孔的发展.由于稀土金属盐与酚醛树脂前驱体相容性的限制,Y(NO3)3或Ce(NO3)3的催化效率随着其在树脂中含量的增加先增大后减小.其中,Y(NO3)3可以同时促进中孔和微孔的发展,且促进微孔发展的作用更强一些,而Ce(NO3)3则在促进中孔的发展中显示出较大的优势.
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