自蔓延燃烧法合成CuCr_2O_4亚微米晶
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摘要
采用自蔓延燃烧法制备CuCr_2O_4,以硝酸铜、硝酸铬为原料,添加柠檬酸、尿素和PEG200配制混合溶液,借助自主设计的自蔓延燃烧合成炉实现了浓缩溶液的连续自蔓延燃烧。通过调整PEG200加入量,获得了高度蓬松的无定型态燃烧产物。对燃烧产物进行煅烧处理,研究了煅烧温度、升温速率、保温时间等工艺参数对样品物相组成和微观形貌影响。经15℃/min升温至950℃保温0.5～1.0 h煅烧处理,燃烧产物转化为晶体结构完整、粒径分布在亚微米范围的CuCr_2O_4亚微米晶,所得CuCr_2O_4粉体特别适合作为铜铬黑颜料推广应用。
CuCr_2O_(4) was prepared via a self-propagating combustion method.A mixed solution of cupric nitrate,chromium nitrate,citric acid,urea and PEG200 was ignited in a self-propagating combustion furnace.A highly fluffy amorphous combustion product was obtained by adjusting the amount of PEG200.The combustion product was calcined in a muffle furnace,and the effects of calcination temperature,heating rate and holding time on the phase composition and morphology of the samples were investigated.The combustion product transforms into CuCr_2O_4 submicron-sized crystals with an uniform size distribution after calcination at 950℃ for 0.5–1.0 h with a heating rate of 15℃/min.The CuCr_2O_4 powder obtained is suitable for application as a copper chrome black pigment.
CuCr_2O_(4) was prepared via a self-propagating combustion method.A mixed solution of cupric nitrate,chromium nitrate,citric acid,urea and PEG200 was ignited in a self-propagating combustion furnace.A highly fluffy amorphous combustion product was obtained by adjusting the amount of PEG200.The combustion product was calcined in a muffle furnace,and the effects of calcination temperature,heating rate and holding time on the phase composition and morphology of the samples were investigated.The combustion product transforms into CuCr_2O_4 submicron-sized crystals with an uniform size distribution after calcination at 950℃ for 0.5–1.0 h with a heating rate of 15℃/min.The CuCr_2O_4 powder obtained is suitable for application as a copper chrome black pigment.
引文
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[2]HOSSEINI S G,ABAZARI R,GAVI A.Pure CuCr2O4 nanoparticles:Synthesis,characterization and their morphological and size effects on the catalytic thermal decomposition of ammonium perchlorate[J].Solid State Sci,2014,37:72-79.
[3]刘环环,姜炜,郝嘎子.CuCr2O4/石墨烯复合粒子的制备以及对AP的催化作用[J].推进技术,2015,36(8):1257-1261.LIU Huanhuan,JIANG Wei,HAO Gazi.J Propul Technol(in Chinese),2015,36(8):1257-1261.
[4]BESHKAR F,AJABSHIR S Z,NIASARI M S.Preparation and characterization of the CuCr2O4 nanostructures via a new simple route[J].J Mater Sci:Mater Electron,2015,26:5043-5051.
[5]YE M Q,HAN A,CHU Z S,et al.Synthesis and characterization of Mn-doped copper chromite black pigments[J].Adv Mater Res,2013,602/604:71-75.
[6]FAULKNER E B,SCHWARTZ R J.High Performance Pigments[M].Weinheim:Wiley-CVH,2009:42-47.
[7]KAWAMOTO A M,PARDINI L C.Synthesis of Copper Chromite catalyst[J].Aero Sci Technol,2004,8(7):591-598.
[8]白明敏,洪毓鸿,汪永清.沉淀剂对CuCr2O4黑色颜料性能的影响[J].硅酸盐学报,2018,46(7):915-921.BAI Mingmin,HONG Yuhong,WANG Yongqing.J Chin Ceram Soc,2018,46(7):915-921.
[9]王伟文,郑晓丹,李平,等.高能球磨高温固相法制备尖晶石型铜铬黑颜料[J].化工进展,2013,32(8):1876?1880.WANG Weiwen,ZHEN Xiaodan,LI Ping,et al.Chem Ind Eng Prog(in Chinese),2013,32(8):1876-1880.
[10]GEORGE K,SUGUNAN S.Nickel substituted copper chromite Spinels:Preparation,characterization and catalytic activity in the oxidation reaction of ethylbenzene[J].Catal Commun,2008,13(9):2149-2153.
[11]KAWAMOTO A M,PARDINI L C,REZENDE L C.Synthesis of copper chromite catalyst[J].Aerospace Sci Technol,2004,8(7):591-598.
[12]朱振峰,王若兰.自蔓延燃烧合成陶瓷粉体的研究进展[J].中国陶瓷,2004,40(1):30-33.ZHU Zhenfeng,WANG Ruolan.China Ceram(in Chinese),2004,40(1):30-33.
[13]葛禹锡,黄锋,倪红军,等.自蔓延高温合成法制备粉体的研究进展[J].热加工工艺,2012,41(12):75-78.GE Yuxi,HUANG Feng,NI Hongjun,et al.Hot Working Technol(in Chinese),2012,41(12):75-78.
[14]李波.金属氧化物混相颜料铜铬黑的制备及表征[D].湘潭:湖南科技大学,2014.LI Bo.Preparation and Structural Characterization of Mixed Metal Oxides Copper Chromite Black Pigment(in Chinese,dissertation).Xiangtan:Hunan University of Science and Technology,2014.
[15]刘立华.溶胶-凝胶自蔓延燃烧法制备铜铬黑颜料及表征[J].湖南科技大学学报,2014,29(3):91-97.LIU Lihua.J Hunan Univ Sci Technol:Nat Sci Ed(in Chinese),2014,29(3):91-97.
[16]吉可明,孟凡会,李忠.溶液燃烧法制备无机材料研究进展[J].现代化工,2014,43(5):22-26.JI Keming,MENG Fanhui,LI Zhong.Modern Chem Ind(in Chinese),2014,43(5):22-26.
[17]武秀兰,任强,何选盟.低温自蔓延燃烧法制备YAG:Ce3+荧光粉的研究[J].稀有金属材料与工程,2017,36(8):69-71.WU Xiulan,REN Qiang,HE Xuanmeng.Rare Metal Mat Eng(in Chinese),2017,36(8):69-71.
[18]郭明勇.溶液燃烧法合成Co-Cu-Mn-Fe系纳米晶黑色陶瓷色料及性能研究[D].广州:华南理工大学,2015.GUO Mingyong.Preparation and property of Co-Cu-Mn-Fe nanocrystalline black ceramic pigments via solution combustion technique(in Chinese,dissertation).Guangzhou:South China University of Technology,2015.
[19]朱振峰.Ce1-xPrx O2纳米晶粉体的制备及其结构与性能的研究[D].西安:陕西科技大学,2007.ZHU Zhenfeng.Preparation,structure and properties of Ce1-x Prx O2nano-crystallites(in Chinese,dissertation).Xi′an:Shaanxi University of Science&Technology,2007.
[20]伍俊,尤静林,王媛媛,等.Li2B4O7晶体及其熔体结构的拉曼光谱研究[J].光谱学与光谱分析,2018,38(6):1736-1740.WU Jun,YOU Jinglin,Wang Yuanyuan,et al.Spectrosc Spect Anal(in Chinese),2018,38(6):1736-1740.