化工进展

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Zn/SBA-15介孔吸附剂的制备及脱附低浓度H2S性能

任文玲,陈绍云,张永春,李桂民   

  1. 大连理工大学化工学院,辽宁 大连 116012
  • 出版日期:2011-10-05 发布日期:2011-10-05

Preparation of Zn/SBA-15 and its desulfurization property on H2S

REN Wenling,CHEN Shanyun,ZHANG Yongchun,LI Guimin   

  1. College of Chemical Engineering,Dalian University of Technology,Dalian 116023,Liaoning,China
  • Online:2011-10-05 Published:2011-10-05

摘要:

以介孔材料SBA-15为载体、过渡金属(ZnFeMnCuCoNi)氧化物为活性组分,用等体积浸渍法制备了过渡金属氧化物负载型介孔脱硫剂,通过XRD和比表面积测定对其进行表征。结果显示,Zn负载SBA-15H2S吸附效果最好;Zn离子负载量为23%时,Zn/SBA-15H2S穿透吸附量最大,为29.7 mg/g附剂;考察流速、反应温度以及杂质气体存在对Zn/SBA-15吸附脱除低浓度H2S的影响,并研究了Zn/SBA-15吸附脱除H2S的再生性能,结果表明在空气氛围下,Zn/SBA-15吸附剂在573 K可再生,循环使用4次穿透硫容不发生变化。

Abstract:

Mesoporous materials SBA-15 modified by different transition metalsincluding ZnFeMnCuCo and Niwere synthesized by impregnation method respectively. The prepared materials were characterized by XRD and BET. Among these six adsorbentsZn/SBA-15 showed the highest H2S breakthrough capacity of 29.7 mg·g -1adsorbent with 23 wt% loading of zinc. The effect of the gas flow rateadsorption temperaturethe affects of the exit of carbon dioxide and oxygen were also investigated. Zn/SBA-15 could be recycled for four times at 573 K in air environmentand its breakthrough capacity remained same.

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