摘要
利用Cu+能与CO结合形成羰基络合物,将Cu+盐负载到分子筛表面,经过热处理能达到自发单层分散状态,有效提高了CO的吸附量。利用直接混合法将CuCl负载于13X分子筛表面上制备高效的CO专用吸附剂。实验结果表明,将样品置于管式炉内,流动N2氛围保护下,在350℃焙烧4h后,CuCl/13X质量比0.4∶1.0吸附剂表现出较好的吸附性能,CO吸附量可达45mL/g,对工业分离混合气体有重要的意义。XRD也显示,不同质量比的CuCl/13X样品,在N2氛围中350℃焙烧4h后,CuCl晶相峰从有变无,说明CuCl均匀分散于载体表面,提供了更多的与CO络合的铜离子活性中心,进而提高了吸附剂对CO的吸附量。
According to the theory that Cu＋ dispersing on the surface of zeolite can form reversible bonds with CO, Cu＋ loaded with salts can form a monolayer dispersion state by heated. When 13X is mixed with CuC1 and heated at 350 ＊C for 4 hours un- der the environment of N2, adsorbents is researched with high CO adsorption selectivity and capacity. As a result, it is found that the adsorbents m（CuCl） ： m（13X）=0.4 ： 1.0 have higher CO adsorption which is 45 mL/g adsorbent. XRD shows that CuCI become disappeared completely and form a monolayer dispersion state on the surface of 13X after heating at 350 ＊C for 4 hours under the environment of N2. Therefore the adsorbent has high capacity of CO.
出处
《山西化工》
2014年第1期34-36,共3页
Shanxi Chemical Industry
