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火焰喷雾热解法合成稀土复合物研究进展
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作者 刘永珍 李慧琴 郝先库 《稀土》 EI CAS CSCD 北大核心 2019年第1期128-138,共11页
综述了火焰喷雾热解法合成稀土复合物条件及其产品性能和应用研究现状,阐述了不同前驱体、溶剂、火焰温度、稀土和过渡金属配比等条件对稀土复合物粒度、比表面积、相结构、热稳定性等因素的影响,重点介绍了合成稀土稳定氧化锆、稀土复... 综述了火焰喷雾热解法合成稀土复合物条件及其产品性能和应用研究现状,阐述了不同前驱体、溶剂、火焰温度、稀土和过渡金属配比等条件对稀土复合物粒度、比表面积、相结构、热稳定性等因素的影响,重点介绍了合成稀土稳定氧化锆、稀土复合物催化剂和发光材料,以及在燃料电池电解质表面形成电极薄膜,合成了新晶相稀土复合物,并对火焰喷雾热解法合成的稀土复合物应用及未来发展前景进行了展望。 展开更多
关键词 火焰喷雾热解 稀土复合物 比表面积 粒度
激光熔化沉积高温钛合金Ti60快速凝固组织 被引量:7
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作者 王彬 张述泉 王华明 《材料热处理学报》 EI CAS CSCD 北大核心 2008年第6期86-92,共7页
运用激光熔化沉积快速成形技术制备了600℃高温钛合金Ti60棒状及板状试样,分析了其凝固组织及稀土复合物的析出行为。结果表明,激光连续熔化沉积Ti60棒状试样由以棒材轴心呈微"八"字形对称分布的定向生长柱状晶构成,柱状晶内部为近乎... 运用激光熔化沉积快速成形技术制备了600℃高温钛合金Ti60棒状及板状试样,分析了其凝固组织及稀土复合物的析出行为。结果表明,激光连续熔化沉积Ti60棒状试样由以棒材轴心呈微"八"字形对称分布的定向生长柱状晶构成,柱状晶内部为近乎无侧向分枝的胞状晶组织,且在胞壁上存在细小均匀分布的稀土复合物;而激光逐层熔化沉积多道搭接板状试样具有更为细小的完全无侧向分枝"之"字形交替生长超细胞晶快速定向凝固组织,其超细胞晶间距仅为5~9μm,且晶内稀土复合物较棒材更加细小密集。 展开更多
关键词 激光熔化沉积 钛合金Ti60 稀土复合物 显微组织
粹文详摘 预览
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作者 钱知勉 《上海塑料》 2005年第1期 42-48,共7页
CW222聚乙烯防雾滴膜研制;CW223抗静电泡沫塑料;CW224改性剂对聚乙烯醇薄膜性能的影响;CW225聚丙烯高性能化的研究;CW226稀土复合物在塑料改性中的应用。
关键词 聚乙烯醇薄膜 改性剂 聚丙烯 塑料改性 泡沫塑料 高性能化 抗静电 稀土复合物 防雾
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Synthesis, Characterization of α-Oxopentanedioic Acid-Isonicotinoyl Hydrazone Rare Earth-Complexes and Relaxivity of Gd-complex 预览
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作者 杨正银 杨汝栋 《中国稀土学报:英文版》 SCIE EI CAS CSCD 2004年第3期 327-330,共4页
α-Oxopentanedioic acid isonicotinoyl hydrazone (H2L) and its five rare earth complexes were synthesized with a view to further investigating MRI activities of the polycarboxylic Schiff base complexes. The complexes w... α-Oxopentanedioic acid isonicotinoyl hydrazone (H2L) and its five rare earth complexes were synthesized with a view to further investigating MRI activities of the polycarboxylic Schiff base complexes. The complexes were characterized on the basis of elemental analyses, IR, UV, 1H NMR spectra and thermal analyses. The general formula of the complexes is [Ln(HL)(H2O)2]Cl2·H2O (where Ln(Ⅲ)=La, Pr, Nd, Eu and Gd). In addition, the relaxivity (R1) of the Gd-complex was determined by INVREC Au program. 展开更多
关键词 无机化学 造影剂 稀土复合物 核磁共振 合成
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稀土复合物在塑料改性中的应用 被引量:8
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作者 王小涓 周澜 《塑料》 CAS CSCD 2004年第4期13-18,33共7页
重点介绍北京燕山石化树脂应用研究所使用广东省炜林纳功能材料有限公司生产的稀土复合物在聚丙烯改性研究中的工作,对添加稀土复合物的实验样品结晶形态、结晶温度、结晶度、结晶速率以及宏观性能如力学性能、热性能、冲击性能等进行... 重点介绍北京燕山石化树脂应用研究所使用广东省炜林纳功能材料有限公司生产的稀土复合物在聚丙烯改性研究中的工作,对添加稀土复合物的实验样品结晶形态、结晶温度、结晶度、结晶速率以及宏观性能如力学性能、热性能、冲击性能等进行全面详尽的研究,全面评价了稀土复合物的实际应用效果。实验结果表明,稀土复合物为聚丙烯β晶型的有效成核剂,可诱发稳定的β晶。 展开更多
关键词 稀土复合物 塑料 改性 应用 聚丙烯 Β晶型 成核剂
Study on Lithium Fast Ion Conductors of Li3x La0.67-x Iny Ti1-2y Py O3 System 预览
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作者 李荣华 章宁 王文继 《中国稀土学报:英文版》 SCIE EI CAS CSCD 2003年第5期 598-600,共3页
Perovskite-type lithium fast ion conductors of Li3xLa0.67-xInyTi1-2yPyO3 system were prepared by solid state reaction. X-ray powder diffraction shows that perovskite solid solution forms in the ranges of x=0.10~0.12... Perovskite-type lithium fast ion conductors of Li3xLa0.67-xInyTi1-2yPyO3 system were prepared by solid state reaction. X-ray powder diffraction shows that perovskite solid solution forms in the ranges of x=0.10~0.12, y≤0.2. AC impedance measurements indicate that the bulk conductivities and the total conductivities are of 1×10-4 and 1×10-5 S*cm-1 at 25 ℃ respectively. The compositions have low bulk activation energies of 20 kJ*mol-1 in the temperature ranges of 298~523 K and total activation energies of 40 kJ*mol-1 in the temperature ranges of 298~623 K. 展开更多
关键词 钙钛矿 大体积传导率 稀土复合物 离子导线 固体电解质
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Magnetic and Transport Properties of La0.5-x Ndx Ba0.5 CoO3 Compounds 预览 被引量:1
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作者 张汝贞 刘宜华 +3 位作者 王成建 黄宝歆 季刚 梅良模 《中国稀土学报:英文版》 SCIE EI CAS CSCD 2003年第5期 558-562,共5页
Substituting effects of Nd for La in La0.5Ba0.5CoO3 compounds were studied systematically. The results show that Nd doping does not change the itinerant properties of the Co3d electrons. The molecular magnetic moment ... Substituting effects of Nd for La in La0.5Ba0.5CoO3 compounds were studied systematically. The results show that Nd doping does not change the itinerant properties of the Co3d electrons. The molecular magnetic moment of the materials decreases monotonically with increasing Nd dopant. When Nd content x≥0.45, a magnetic phase separation appears in the materials. When x≤0.45, the Curie temperature decreases monotonically with increasing Nd dopant. This is due to the size effects of the rare earth ions. The electric resistance measurements show that in the studied temperature range, the conduction of the materials belongs to the thermo-diffusion conduction below the Curie temperature, while it belongs to the variable range hopping conduction of polarons over the Curie temperature. 展开更多
关键词 稀土复合物 尺寸效应 电荷转变 磁性能 转变特性
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Synthesis, EPR and Fluorescence Properties of Quaternary Lanthanide Complexes with Chloroacetate and Phenanthroline Ligands 预览
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作者 朱龙观 肖洪平 《中国稀土学报:英文版》 SCIE EI CAS CSCD 2002年第5期 400-403,共4页
A series of novel quaternary mixed anion complexes of lanthanide containing 1, 10-phenanthroline (phen) and chloroacetate ligands were synthesized from the water/ethanol solution with slightly acidic solution and char... A series of novel quaternary mixed anion complexes of lanthanide containing 1, 10-phenanthroline (phen) and chloroacetate ligands were synthesized from the water/ethanol solution with slightly acidic solution and characterized by elemental analysis, IR, UV and thermal analysis. The EPR and fluorescence properties also were studied. 展开更多
关键词 电子顺磁共振 荧光性能 合成 稀土复合物 光谱分析 邻二氮杂菲 氯代醋酸盐
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进入下一世纪的稀土工业应用 预览 被引量:1
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作者 侯庆烈 贾积晓 《上海有色金属》 CAS 2000年第1期 5-11,共7页
本文以当前最为活跃的稀土应用领域为例,介绍了稀土应用中对起始原料的要求,以及特殊稀土复合物的物理性能。
关键词 稀土复合物 荧光粉 起始原料 着色剂 稀土工业
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稀土氧化物在复合PSZ材料中的作用 预览
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作者 陈玉如 张琪 《天津大学学报:自然科学与工程技术版》 EI CAS CSCD 2000年第4期 530-533,共4页
复合稳定ZrO2在高温热处理过程中,发生立方相向四方相的相变,由于Y2O3或Ce2O3和MgO的复合稳定作用,相变过程产生大量介稳的t-ZrO2析出体。可相变四方相含量随热处理时间而增加,其中外2mol%Y2O3的(... 复合稳定ZrO2在高温热处理过程中,发生立方相向四方相的相变,由于Y2O3或Ce2O3和MgO的复合稳定作用,相变过程产生大量介稳的t-ZrO2析出体。可相变四方相含量随热处理时间而增加,其中外2mol%Y2O3的(Y,Mg)-PSZ/MgAl2O4材料处理至800h仍未降低。热处理过程中Y2O3和Ce2O3始终存在于晶格中稳定ZrO2.复合稳定剂充分体现了对立方和四方相的稳定作用,多元PSZ的稳 展开更多
关键词 稀土复合物 复合稳定 二氧化碳 陶瓷材料
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多糖稀土复合物作为果蔬脱毒死蜱清洗剂的应用研究 预览
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作者 吴昊 汪东风 王珏 《中国科技信息》 2008年第1期 16,共1页
研究了茶多糖稀土复合物及海带多糖稀土复合物对黄瓜和西红柿中毒死蜱的降解效果,结果表明,茶多糖稀土复合物及海带多糖稀土复合物能有效降解果蔬中的毒死蜱残留,降解率高达85.4%和82.4%同时,还研究了茶多糖稀土复合物及海带多糖稀... 研究了茶多糖稀土复合物及海带多糖稀土复合物对黄瓜和西红柿中毒死蜱的降解效果,结果表明,茶多糖稀土复合物及海带多糖稀土复合物能有效降解果蔬中的毒死蜱残留,降解率高达85.4%和82.4%同时,还研究了茶多糖稀土复合物及海带多糖稀土复合物对受试样品体内相关酶活性和品质指标的影响,结果显示,将茶多糖稀土复合物作为果蔬脱毒死蜱清洗剂使用是可行的。 展开更多
关键词 稀土复合物 海带多糖 毒死蜱 清洗剂 果蔬 应用 降解效果 相关酶活性
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Progress in Synthesis and Application of Complexes of Rare Earth with Organic Ligands Containing Sulphur Atoms 预览
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作者 ZhangWeiguang YinXia +2 位作者 FanJun ZhangQijiao HuangMiaoyou 《中国稀土学报:英文版》 SCIE EI CAS CSCD 2004年第3期 333,共1页
关键词 有机化学 配合 硫原子 合成 稀土复合物
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壳聚糖稀土复合物涂膜对黄瓜保鲜及降农残的效果研究 预览 被引量:5
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作者 吴昊 汪东风 +2 位作者 张宾 原志军 史跃林 《中国海洋大学学报:自然科学版》 CAS CSCD 北大核心 2006年第S2期51-56,共6页
延长果蔬的贮藏期和降低其农药残留,一直是人们十分关心的问题。本文选用壳聚糖稀土复合物作为涂膜原料对黄瓜进行涂膜处理,室温贮藏后,测定黄瓜的感官品质、失重率、硬度、叶绿素及Vc含量、过氧化物酶(POD)及多酚氧化酶(PPO)活性和毒... 延长果蔬的贮藏期和降低其农药残留,一直是人们十分关心的问题。本文选用壳聚糖稀土复合物作为涂膜原料对黄瓜进行涂膜处理,室温贮藏后,测定黄瓜的感官品质、失重率、硬度、叶绿素及Vc含量、过氧化物酶(POD)及多酚氧化酶(PPO)活性和毒死蜱农药的残留量。结果表明,壳聚糖稀土复合物涂膜能很好地保持黄瓜的外观、质地和营养成分,具有明显的保鲜效果,可延长保藏期大约3 d;对毒死蜱农药降解率可达73%以上。 展开更多
关键词 黄瓜 保鲜 壳聚糖稀土复合物 涂膜
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聚氨基硅氧烷—稀土复合物的制备及其性能研究 预览
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作者 邱关明 张明 +3 位作者 陈海燕 陈晓松 严长浩 冈本弘 《中国稀土学报》 CAS CSCD 北大核心 2003年第2期 133-136,共4页
利用稀土离子与活性硅醇交联聚氨基硅氧烷, 得到了聚氨基硅氧烷-稀土复合物; 用热重分析仪(TG)分析了其热稳定性, 测试了其在电场中的受力状况, 推导其相对极化率, 发现含不同稀土样品的极化率有较大差异, 说明可以用这种方法获得不同... 利用稀土离子与活性硅醇交联聚氨基硅氧烷, 得到了聚氨基硅氧烷-稀土复合物; 用热重分析仪(TG)分析了其热稳定性, 测试了其在电场中的受力状况, 推导其相对极化率, 发现含不同稀土样品的极化率有较大差异, 说明可以用这种方法获得不同电学性能的有机硅材料. 同时研究了它们的吸收、发射光谱,并与稀土氯化物溶液的吸收光谱进行了比较, 指出了它们的不同并讨论了其原因. 展开更多
关键词 有机高分子材料 聚氨基硅氧烷-稀土复合物 稀土离子交联 理性能 稀土
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Effects of Rare Earths and Its Complex with Extract from Seaweed(Laminaria japonica ) on Growth and Immunization of Penaeid Shrimp ( Penaeus vannamei ) 预览 被引量:1
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作者 齐宏涛 汪东风 +3 位作者 孙继鹏 罗轶 孙丽平 周小玲 《中国稀土学报:英文版》 SCIE EI CAS CSCD 2005年第1期 103-107,共5页
The effects of rare earths (RE) and its complex with extract from seaweed (Lamiaria japonica) on the growth and immunization of penaeid shrimp (Penaeus vannamei) were investigated. The results show that the survival r... The effects of rare earths (RE) and its complex with extract from seaweed (Lamiaria japonica) on the growth and immunization of penaeid shrimp (Penaeus vannamei) were investigated. The results show that the survival rate, body length and weight of the shrimp treated by RE and its complex with extract from seaweed are higher than those of the control, and that the activities of the phenoloxidase (PO), lysozyme (LSZ), superoxide dismutase (SOD), peroxidase (POD), acid phosphatase (ACP) and alkaline phosphatase (ALP) in the shrimp treated by RE and the complex are also much higher than those from the control. 展开更多
关键词 稀土元素复合物 酶活性 海藻提取 存活率 超氧化岐化酶
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Bioeffects of Rare Earth Complex on Rats Studied by NMR and ICP-MS Spectroscopy 预览 被引量:1
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作者 吴惠丰 李晓晶 +3 位作者 廖沛球 吴亦洁 裴奉奎 聂毓秀 《中国稀土学报:英文版》 SCIE EI CAS CSCD 2005年第2期 245-250,共6页
The bioeffects of Changle, a rare earth complex on rats were investigated using NMR and ICP techniques. Wistar rats were administrated orally with Changle (a rare earth-containing fertilizer additive applied in agricu... The bioeffects of Changle, a rare earth complex on rats were investigated using NMR and ICP techniques. Wistar rats were administrated orally with Changle (a rare earth-containing fertilizer additive applied in agriculture to raise the production of crops) at doses of 2, 5 and 20 mg·kg-1 body weight/day respectively for 90 d. The urine of Changle-treated rats was collected at 45 and 90 d and serum samples were taken after 90 d. The relative concentrations of some important endogenous metabolites in biofluids were determined by 1H NMR spectra and the contents of the four rare earth elements (La, Ce, Pr and Nd) constituting Changle in the serum samples were measured by ICP-MS technique. Changle-induced renal and liver damage is demonstrated based on the increase in the amounts of the amino acids, trimethylamine N-oxide, N, N-dimethylglycine, dimethylamine, succinate, α-Ketoglutarate ethanol and the alteration of rare earth concentrations in serum. 展开更多
关键词 流体力学 NMR 稀土元素复合物 变清蛋白 诱导耦合等离子体-质量分光镜
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Synthesis and Characterization of Rare Earth Solid Complexes with Sodium 5-Aminosalicylate 预览
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作者 张秀英 李书静 《中国稀土学报:英文版》 SCIE EI CAS CSCD 2005年第2期 143-147,共5页
Ten new rare earth solid complexes were synthesized by the reaction of sodium 5-aminosalicyliate with rare earth chloride. The structure character, physical and chemical properties of these complexes were studied by I... Ten new rare earth solid complexes were synthesized by the reaction of sodium 5-aminosalicyliate with rare earth chloride. The structure character, physical and chemical properties of these complexes were studied by IR, UV, 1H NMR spectra, TG-DTA, fluorescence, elemental analyses, molar conductance and magnetic susceptibility. The ten rare earth complexes exist in dimeric form probably and the coordination number is seven. The antibacterial activity of the ligand and six complexes was also tested against Staphylococcus aureus, Escherichia coli and Bacillus subtilis, and the effect of Yb complex at 20 mg·ml-1 against Staphylococcus aureus is most significant. 展开更多
关键词 稀土元素复合物 抗细菌活性 氨基水杨酸 AIDS 预防方法
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Interaction between Ternary Rare Earth Complexes of Cinnamic Acid and Phenanthroline with DNA by Spectroscopy 预览 被引量:1
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作者 郭东方 叶炎 曾正志 《中国稀土学报:英文版》 SCIE EI CAS CSCD 2005年第2期 162-166,共5页
The interaction of ternary complexes [RE(phen)(cin)3(H2O)](RE= Nd (III),Ce(III),Eu(III))with calf thymus DNA was investigated by electronic absorption spectroscopy, ethidium bromide(EB)-DNA quenching fluorescent spect... The interaction of ternary complexes [RE(phen)(cin)3(H2O)](RE= Nd (III),Ce(III),Eu(III))with calf thymus DNA was investigated by electronic absorption spectroscopy, ethidium bromide(EB)-DNA quenching fluorescent spectra and resonance light scattering. All experimental results indicate that the three complexes bind to DNA by the electrostatic mode and the intercalative mode. It is predicted that these complexes show high anticancer activity or other biologic activity. 展开更多
关键词 无机化学 吸收光谱 稀土元素复合物 共振光散射
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Synthesis, Reactivity and Crystal Structure of β—Diketiminate Ytterbium Chlorides 预览
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作者 罗云杰 姚英明 +2 位作者 张勇 沈琪 郁开北 《中国化学:英文版》 SCIE CAS CSCD 2004年第2期 187-190,共4页
Reaction of anhydrous YbCl3 with 1 equiv, of LLi [L=p-ClPhNC(Me)CH(Me)N(C6H3-2,6-i-Pr2)] in THF at room temperature gave the β-diketiminate lanthanide dichloride LYbCl2(THF)2 (1) in good isolated yield. Similarly rea... Reaction of anhydrous YbCl3 with 1 equiv, of LLi [L=p-ClPhNC(Me)CH(Me)N(C6H3-2,6-i-Pr2)] in THF at room temperature gave the β-diketiminate lanthanide dichloride LYbCl2(THF)2 (1) in good isolated yield. Similarly reaction of anhydrous YbCl3 with 1 equiv, of LLi, then with 1 equiv, of t-BuCpNa in THF yielded the expected mixed-ligand β-diketiminate ytterbium chloride (t-BuCp)YbL(μ-Cl)2Li(THF)2 (2). Both 1 and 2 were well characterized by elemental analysis, IR spectra, ^1H NMR spectra, and X-ray diffraction analysis. 展开更多
关键词 稀土元素复合物 合成 晶体结构 β-Diketiminate
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Preparation and optical properties of poly(vinylidene difluoride)/(Y0.97Eu0.03)2O3 rare-earth nanocomposite
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作者 许春华 贾润萍 +2 位作者 欧阳春发 王霞 姚国英 《中国光学快报:英文版》 SCIE EI CAS CSCD 2008年第10期763-766,共4页
<正>In this letter,poly(vinylidene difluoride)(PVDF)/(Y_(0.97)Eu_(0.03))_2O_3 rare-earth nanocomposites were pre- pared by a simple co-precipitation method,and their morphology,structure,and optical properties w... <正>In this letter,poly(vinylidene difluoride)(PVDF)/(Y_(0.97)Eu_(0.03))_2O_3 rare-earth nanocomposites were pre- pared by a simple co-precipitation method,and their morphology,structure,and optical properties were investigated.The scanning electron microscope(SEM)images showed that the(Y_(0.97)Eu_(0.03))_2O_3 rare- earth nanoparticles formed 50 nm—2μm aggregates in PVDF matrices.X-ray diffraction(XRD)curves indicated the incorporation and structure preserving of(Y_(0.97)Eu_(0.03))_2O_3 nanoparticles in PVDF matrices. Photoluminescence(PL)spectra of the nanocomposite showed a characteristic red light emission at 612 nm,which was attributed to the intrinsic emission of(Y_(0.97)Eu_(0.03))_2O_3 nanoparticles.Optical band gap (E_g)of the nanocomposite exhibited a decreasing trend with the increase of(Y_(0.97)Eu_(0.03))_2O_3 content in PVDF matrices within the experimental dosage range. 展开更多
关键词 聚亚乙烯基二氟化 制备 光学特性 稀土元素纳米复合物
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