| 柠檬酸镍前驱体热分解制备镍酸镁复氧化物纯相 |
| Magnesium Nickel Mixed Oxides Prepared from Thermal Decomposition of Citratonickel (Ⅱ) Precusor |
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| 摘要: 以组成和结构确定的柠檬酸配合物Mg2[Ni(Hcit)2]·10HO和Mg[Ni(Hcit)(H2O)]2·8H2O(H4cit为柠檬酸为前驱体热分解得到Ni和Mg摩尔比分别为1∶2和2∶1的镍酸镁纯相Mg2NiO3和MgNi2O3。粉末衍射实验证实它们是由半径相近、 |
| 关键词: 镍酸镁 复氧化物 柠檬酸法 甲烷 纳米管 |
| 基金项目: 国家科技部基础研究重点项目(No.G1999022408);创新研究群体计划和教育部骨干教师资助计划资助 |
| Abstract: Nickel-based oxides are catalysts u sed in the partial oxidation,carbon dioxide reforming of methane and fabrication of carbon nanotubes by thermal decomposition of methane.Complexes Mg2[Ni(Hcit)2]·10H2O and Mg[Ni(H2O)2]2·8H2O(H4cit acid)are prepared from the reaction of MgCl2 with the complexes(NH4)4[Ni (Hcit)2]·2H2O and(NH4)2[Ni(Hcit)(H2O)2]·2H2Orespectively.The complexes are decomposed to obtain nickel-based oxides Mg2NiO3and MgNi2O3.XRD patterns of these new phases are close to the pure phases of MgO and NiO,but the dimensions of the lattice parame ters of these new phases are between t hem.This indicates that the solid-solution is formed due to a very good mutual solubility between MgO and NiO.It is deduced that the preparation of mixed oxides by citrate method is related closely with the decomposition of well-characterized citrate nickel(Ⅱ)complexes. |
| Keywords: magnesium nickel oxide mixed oxide citrate method methane nanotube |
| 投稿时间：2001-05-08 修订日期：2001-07-09 |
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| 蒋亚琪,章慧,毛少瑜,周朝晖,万惠霖.柠檬酸镍前驱体热分解制备镍酸镁复氧化物纯相[J].无机化学学报,2001,17(6):799-803. |
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