【摘要】 采用Cu(NO3)2为原料,分别以NH4HCO3、NH3·H2O、NaOH及NaOH与Na2CO3的混合液为沉淀剂,制备了CuO超细粉体,借助XRD、SEM、FT IR、TG DTA、TPR等技术对粉体形态结构与活性等进行了研究。结果表明,沉淀剂对CuO超细粉体的粒径、形貌、催化活性和氧化能力有显著影响;含Na+沉淀剂制备的CuO粉体的各种性能均优于含NH4+的沉淀剂,前者所得粉体具有晶粒细小、粒度分布均匀、比表面积大、催化活性高、氧化能力强等特点;由NaOH与Na2CO3混合液沉淀剂得到的Cu2(OH)2CO3前驱体,热解制备CuO超细粉体简便易行。更多还原

【Abstract】 Uitrafine powder CuO was prepared from Cu（NO₃）₂ and four kinds of precipitants,including NH₄HCO₃,NH₃·H₂O,NaOH and mixed solution of NaOH and Na₂CO₃,by a precipitation method.XRD,FT-IR,SEM,TG-DTA,TPR and surface area measurement techniques were used to investigate the properties of the CuO powder.The results show that the precipitants have a great impact on crystallite size,morphology,surface structure,and activity of the powder for H₂O₂ decomposition,and it was found that performance of the powder prepared by containing Na⁺ precipitant,which has smaller crystal size,higher surface area and better catalytic activity,is prior to that of containing NH₄⁺ precipitant.The method of preparing CuO by heating Cu₂（OH）₂CO₃ obtained from precipitants mixed solution of NaOH and Na₂CO₃ possesses the advantages of simple processing,easy controlling and low cost.更多还原