广州化工
廣州化工
엄주화공
GUANGZHOU CHEMICAL INDUSTRY AND TECHNOLOGY
2012年
19期
63-65,132
,共4页
爆轰%氧化铈粉末%提纯工艺%纯度
爆轟%氧化鈰粉末%提純工藝%純度
폭굉%양화시분말%제순공예%순도
detonation%ceria powder%purification technology%purity
通过正交试验研究爆轰法制备氧化铈粉末的提纯工艺,并对影响氧化铈纯度的各种因素进行详细的研究。研究表明,适当的降低氧化铈的质量浓度可以有效的提升氧化铈粉体的纯度;同时酸洗的时间、酸洗的反应温度、硝酸浓度均对氧化铈粉末的纯度有较大影响,得出了氧化铈粉体提纯的最佳工艺条件为：酸洗时间12 h,氧化铈质量浓度66.7 g/L,硝酸浓度0.6 mol/L,酸洗反应温度90℃。按此提纯工艺可以得到纯度为99.95%的氧化铈粉末。
通過正交試驗研究爆轟法製備氧化鈰粉末的提純工藝,併對影響氧化鈰純度的各種因素進行詳細的研究。研究錶明,適噹的降低氧化鈰的質量濃度可以有效的提升氧化鈰粉體的純度;同時痠洗的時間、痠洗的反應溫度、硝痠濃度均對氧化鈰粉末的純度有較大影響,得齣瞭氧化鈰粉體提純的最佳工藝條件為：痠洗時間12 h,氧化鈰質量濃度66.7 g/L,硝痠濃度0.6 mol/L,痠洗反應溫度90℃。按此提純工藝可以得到純度為99.95%的氧化鈰粉末。
통과정교시험연구폭굉법제비양화시분말적제순공예,병대영향양화시순도적각충인소진행상세적연구。연구표명,괄당적강저양화시적질량농도가이유효적제승양화시분체적순도;동시산세적시간、산세적반응온도、초산농도균대양화시분말적순도유교대영향,득출료양화시분체제순적최가공예조건위：산세시간12 h,양화시질량농도66.7 g/L,초산농도0.6 mol/L,산세반응온도90℃。안차제순공예가이득도순도위99.95%적양화시분말。
The a set of orthogonal test,the purification of the synthesis of ceria powder by detonation method,and all kinds of factors influencing the purity of ceria powder in detail were studied.The research showed that the purity of ceria can be promoted effectively by appropriately reducing mass concentration of ceria,meanwhile,pickling time,pickling temperature and acidity of nitric acid all had great impact on the purity of ceria powder.The optimum process conditions of purification ceria powder were that pickling time was 12 h;mass concentration of ceria was 66.7 g/L,acidity of nitric acid was 0.6 mol/L,and pickling temperature was 90 ℃.The purity of ceria powder with 99.95% can be directly got according to these conditions.
