【摘要】 以间苯二酚-甲醛为碳源，三聚氰胺为氮源，二氧化硅溶胶为模板，通过溶胶-凝胶与悬浮聚合工艺制备出毫米尺寸（0.4～0.8 mm）且比表面积和孔容分别高达915 m²·g^-1和1.96 cm³·g^-1的含氮球形中孔炭。在含氮球形活性炭制备基础上，负载活性组分离子液体[Bmim]Zn₂Cl₅用于硫化氢和氨气的脱除。研究结果表明，含氮球形活性炭的表面氮掺杂和中孔结构有利于活性组分弥散负载以及脱硫产物的存储，当[Bmim]Zn₂Cl₅负载量达到50%时，吸附剂对硫化氢和氨气的穿透吸附容量分别达到790 mg/g和41.3 mg/g;且吸附机制与吸附剂失效研究表明，硫化氢脱除归结于炭材料孔隙结构内的催化氧化，而氨气的脱除主要为负载活性组分的化学吸附。更多还原

【Abstract】 Nitrogen-doped and mesoporous carbon spheres with the size of 0.4～0.8 mm, a high surface area of 915 m²·g^-1,and a large pore volume of up to 1.96 cm³·g^-1 were synthesized via sol-gel and suspension polymerization method using resorcinol-formaldehyde as the carbon source, melamine as the nitrogen precursor, and colloidal silica as the hard template.The as-prepared carbon spheres were impregnated with ion liquid [Bmim]Zn₂Cl₅ as an adsorbent for hydrogen sulfide and ammonia.It is found that the mesoporous structure and nitrogen-doped surface could facilitate the uniform distribution of active component [Bmim]Zn₂Cl₅ and sulfur-containing products after desulfurization on the pores of carbon spheres.The adsorbent with [Bmim]Zn₂Cl₅ mass loading of 50% exhibits breakthrough capacities of 790 mg/g and 41.3 mg/g for hydrogen sulfide and ammonia, respectively.Additionally, the investigation of the spent adsorbent and mechanism reveals that the hydrogen sulfide removal is based on the catalysis of carbon-based adsorbents while the ammonia removal is due to the chemical adsorption of the active component.更多还原