制备室温纳米ZnO脱硫剂方法的研究  

Study on preparation of nanometer ZnO desulfurizer at ambient temperature

作　　者：闫波[1] 李琳琳[1] 姜安玺[1] 邵纯红[1] 李芬[1] 王新[1] 

机构地区：[1]哈尔滨工业大学市政环境工程学院,黑龙江哈尔滨150090

出　　处：《材料科学与工艺》2007年第3期325-329,共5页Materials Science and Technology

基　　金：国家自然科学基金资助项目(50478026);水质科学与水环境修复工程北京市重点实验室开放研究基金资助项目

摘　　要：为了提高ZnO脱硫剂的室温硫容及脱硫精度,对直接沉淀法进行了工艺改进,并利用动态实验以及XRD和XPS等表征手段对纳米ZnO脱硫剂进行了结构和效能分析.研究表明,通过在沉淀反应后添加Na2CO3溶液,解决了直接沉淀法阴离子难洗涤、颗粒易团聚、粒径分布不均等缺点,制备出粒径只有8.00 nm、颗粒均匀分散性好的纳米ZnO脱硫剂,其室温脱硫活性是同条件下其他方法制备纳米ZnO脱硫剂脱硫活性的5～10倍,且其脱硫产物中有不同于ZnS中的晶格硫的新硫物种产生.In order to improve desulfurization precision of the ZnO desulfurizer at ambient temperature this, article has made improvement to direct precipitation method. And the structure and potency analysis to the nano- meter ZnO desulfurizer have also been carried on by dynamic experiments and methods such as XRD and XPS. In this experiment, by adding Na2 CO3 solution after precipitation reaction, the shortcomings of hard washing of anion, easy agglomeration of particles and distributions nonuniformity of particle size in the method of direct precipitation can be resolved. And symmetrical nanometer ZnO desulfurizer of 8.00 nm in diameter can be obtained with good dispersion, whose desulfurization activity at ambient temperature is 5 - 10 times of others methods at same conditions. Besides, new desulfurization species different with crystal lattice sulfur of ZnS can be produced in desulfurization products.

关 键 词：室温 纳米ZNO 脱硫剂 脱硫活性 

分 类 号：X701.3[环境科学与工程—环境工程]