采用液相沉淀和固相反应法制备纳米氧化铜，借助 XRD，XPS，TEM 和 BET 等手段分析纳米氧化铜的结构，并考察结构对 H2 S 脱除性能的影响。结果表明：改变制备工艺参数可获得不同晶粒尺寸的纳米氧化铜，随着晶粒尺寸的增大，材料的脱硫活性明显下降，其中晶粒尺寸为9．3nm 的 CuO 的脱硫性能最好，H2 S 穿透时间可达270min；纳米氧化铜由于晶粒尺寸小导致的少量团聚对脱硫活性未产生明显影响，但其表面氧空位的出现和铜元素周围电子密度的下降有利于提高脱硫性能；纳米氧化铜的比表面积相差较小时，对脱硫活性的影响不显著，但如果颗粒堆积形成的不规则孔分布较窄，且同时存在着开放和收缩两种孔结构时，有利于 H2 S 的脱除。
Nano-CuO was prepared by methods of liquid-phase precipitation and solid state reaction. The structure of nano-CuO was analyzed by XRD,XPS,TEM and BET techniques,and the effect of the structure of nano-CuO on the removing performance of H2 S was also studied.The results indicate that various crystal size nano-CuO can be prepared by changing preparation process parameters.The desulfurization performance of nano-CuO decreases significantly with the increases of crystal size.The nano-CuO with the crystal size of 9.3 nm exhibits the best desulfurization performance,and the breakthrough time of H2 S can reach 270 min.A small amount cluster caused by small crystal size has a little impact on the desulfurization activity of nano-CuO.However,the appearance of oxygen vacan-cies on the copper oxide surface and the decrease of electron cloud density around the copper are bene-ficial to the improving of desulfurization performance of nano-CuO.When the specific surface area is a little different,the effect on the desulfurization activity of nano-CuO is not obvious.But the removal of H2 S can be improved when the irregular pore formed by grain accumulation distribution is narrow, and the open and contraction pore structures exist at the same time.
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