摘要
在乙醇和乙酰丙酮混合溶液中,50～55℃,导电盐Bu4NBr浓度为0 040mol/L,控制阳极电流0 2A电解铝片6h,再电解镍片2h,制得前驱体NiAl2(OCH2CH3)(8 y)(acac)y[acac为乙酰丙酮基]。将电解液控制pH=8 5直接水解形成凝胶,凝胶经洗涤、干燥后在350℃煅烧2h,制得纳米NiAl2O4粉体,粒径20～30nm。用红外(IR)、差热-热重分析(TG-DTA)、X射线衍射(XRD)、电子透射技术(TEM)等手段对前驱体和纳米NiAl2O4进行了表征。
The precursor NiAl_2(OCH_2CH_3)_((8-y))(acac)_y was synthesized by electrochemical dissolution of aluminum for 6 h and then nickel for 2 h at 0.2 A in ethanol and acetylacetone solution.Nanon NiAl_2O_4 powder was prepared from the electrolytic solution by direct sol-gel process under pH=8.5,drying and calcining at 350 ℃ for 2 h. IR spectrum,TG-DTA,XRD and TEM were used to investigate the structure of the precursor and nanosized NiAl_2O_4.The experiments showed that during electrolysis,the temperature controlled at 54～60 ℃ and concentration of Bu_4NBr of 0.040～0.045 mol/L as conductive additive could improve the current efficiency,and nanosized NiAl_2O_4 with a narrow size distribution of 20～30 nm can be obtained at a low calcination temperature of 350 ℃.
出处
《精细化工》
EI
CAS
CSCD
北大核心
2005年第2期135-137,共3页
Fine Chemicals
基金
安徽省高校青年教师科研资助计划(2004jq185)
