期刊论文

中文

化工环保

1006-1878

2016

36

2

200-204

10.3969/j.issn.1006-1878.2016.02.015

湖北省自然科学基金项目（2012FFB04803） 武汉轻工大学科研项目（2012Y05）.

本校为第一机构

采用模板法在CuO外包裹一层具有介孔结构的SiO_2,制备了CuO/AC@SiO_2。采用X射线衍射仪对CuO/AC@SiO_2的结构和催化活性位点进行了表征。通过固定床气固吸附实验,研究了CuO/AC@SiO_2对H_2S的吸附脱除性能。表征结果显示,CuO是催化氧化H_2S的活性中心,被氧化成Cu2O后吸附脱除H_2S的性能下降。实验结果表明:CuO/AC吸附H_2S时的有效穿透时间为117 min,CuO/AC@SiO_2的有效穿透时间提高到141 min,CuO/AC@SiO_2对H_2S的吸附性能明显提高;以Cu(NO_3)_2为前驱体的CuO/AC@SiO_2对H_2S的吸附量高于以Cu(AC)2为前驱体;在Cu(NO_3)_2为前驱体、m(正硅酸乙酯)∶m(CuO/AC)=0.7、吸附温度为90 ℃的最佳条件下,Cu...

CuO/AC@SiO_2 was prepared by coating a layer of mesoporous SiO_2 on CuO with template method. The structure and catalytic active site of CuO/AC@SiO_2 were characterized by XRD. The adsorption capability of CuO/AC@SiO_2 to H_2S was studied by gas-solid adsorption experiment in fixed bed reactor. The characterization results indicate that CuO is the active center for H_2S catalytic oxidation,and when CuO is reduced to Cu2O,the H_2S removal effect is decreased. The experimental results show that:The effective penetration time of CuO/AC and CuO/AC@...