主要研究活性炭表面负载不同金属离子以提高其对二苯并噻吩吸附性能.通过浸渍法制备5种负载过渡金属离子活性炭Ag(Ⅰ)/AC、Cu(Ⅱ)/AC、Ni(Ⅱ)/AC、Zn(Ⅱ)/AC和Fe(Ⅲ)/AC.用静态吸附法测定了二苯并噻吩在不同活性炭上的吸附平衡等温线,并应用软硬酸碱理论分析和讨论活性炭表面负载不同金属离子对二苯并噻吩吸附性能的影响.结果表明活性炭表面负载Ag+,Ni2+、Cu2+或Zn2+离子,可提高其对二苯并噻吩的吸附,而活性炭表面负载Fe3+,反而降低了其对二苯并噻吩的吸附能力.由于Ag+价格昂贵,而Ni2+、Cu2+和Zn2+价廉易得,而且Zn(Ⅱ)/AC、Cu(Ⅱ)/AC和Ni(Ⅱ)/AC对二苯并噻吩又具有良好的吸附能力,故表面负载Ni2+、Cu2+和Zn2+可改善活性炭吸附脱除油品中有机硫化物的能力.
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