摘要
研究了一种从水滑石类材料制得的MgAlFe复合氧化物脱除低浓度SO_2的性能,发现它对SO_2具有很高的吸附速率,吸附容量可达每克材料吸附SO_21.4g以上,是一种性能优良的SO_2吸附剂。研究中发现这类材料饱和吸附SO_2后可以用氢气还原再生。氢气的浓度在15％～100％范围内不影响再生速率。
MgAlFe complex oxides derived from hydrotalcites appear to be a new important environmental catalysis for oxidation - adsorption of low concentration sulfur dioxide. Its basic properties of desulphuration were studied in a quartz reactor.The results indicated that MgAlFe complex oxide had high adsorptive rate on SO2 and amount of SO2 adsorbed was over 1.4 gram per gram of sorbent - catalyst, it is much higher than other materials. All MgAlFe complex oxides used were found to be regenerable under hydrogen.The concentration of hydrogen (within 15% - 100% ) did not affect the regenerative rate amd the regenerated MgAlFe compler orides still kept its good adsorptive ability even after its 10th regeneration
关键词
水滑石
复合氧化物
二氧化硫
吸附
脱硫
吸附剂
hydrotalcites, complex oxides, sulfur dioxide, adsorption, oxidization, regeneration.
