| 钙钛锆石基组合矿物固溶铈的研究 |
| |
| 引用本文： | 桂成梅,滕元成,任雪潭,宋子键. 钙钛锆石基组合矿物固溶铈的研究[J]. 原子能科学技术, 2011, 45(11): 1294-1299. DOI: 10.7538/yzk.2011.45.11.1294 |
| |
| 作者姓名： | 桂成梅 滕元成 任雪潭 宋子键 |
| |
| 作者单位： | 西南科技大学 ;四川省非金属复合与功能材料重点实验室-省部共建国家重点实验室培育基地，四川 ;绵阳621010 |
| |
| 基金项目： | 国家自然科学基金资助项目(10775113); 国防基础科研计划资助项目(B3120110001) |
| |
| 摘 要： | 以ZrSiO4、CaCO3、TiO2、Al2O3、Ce2C6O12•10H2O为原料，采用固相反应工艺合成掺Ce钙钛锆石基钛酸盐组合矿物。利用XRD、BSE、EDS等分析方法，研究组合矿物的制备及其对Ce的固溶。结果表明：合成掺Ce钙钛锆石基钛酸盐组合矿物的较佳温度为1230℃；组合矿物的主要晶相为钙钛锆石固溶体，次要晶相是榍石和CaTiO3的固溶体；CeO2在组合矿物中的最大固溶量为21.39%；组合矿物固溶Ce4+的机制较复杂，Ce4+固溶在Ca2+位或Zr4+位，Al3+固溶在Ti4+位对Ce4+固溶在Ca2+位有电价补偿作用。
|
| 关 键 词： | 钙钛锆石, 榍石, 3')" >CaTiO3, 固溶体, 铈 |
Research of Solidifying Cerium in Assembled Minerals of Zirconolite-Based |
| |
| GUI Cheng-mei,TENG Yuan-cheng,REN Xue-tan,SONG Zi-jian. Research of Solidifying Cerium in Assembled Minerals of Zirconolite-Based[J]. Atomic Energy Science and Technology, 2011, 45(11): 1294-1299. DOI: 10.7538/yzk.2011.45.11.1294 |
| |
| Authors: | GUI Cheng-mei TENG Yuan-cheng REN Xue-tan SONG Zi-jian |
| |
| Affiliation: | State Key Laboratory Cultivation Base for Nonmetal Composite and Functional Materials,Southwest University of Science and Technology, Mianyang 621010, China |
| |
| Abstract: | The assembled minerals of zirconolite-based doped cerium were synthesized by solid-reaction, using zircon, calcium carbonate, titanium dioxide, alumina and oxalic-acid cerium as raw materials. The preparation of assembled minerals and solidifying cerium in it were researched by means of XRD, BSE, EDS and so on. The results indicate that the better synthesis temperature of the assembled titanate minerals of zirconolite-based doped cerium is 1 230 ℃. The main crystal phase is zirconolite, the secondary phases are sphene and perovskite. The maximum solidifying content of cerium dioxide is 21.39% in the assembled minerals. The mechanism of solidifying cerium in assembled minerals is comparatively complex. Ce4+ replaces the lattice site of Ca2+ or Zr4+, and Al3+ replaces the lattice site of Ti4+ as an electro-valence compensation of Ce4+ replacing Ca2+ lattice site. |
| |
| Keywords: | zirconolite sphene perovskite solid solution cerium |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《原子能科学技术》浏览原始摘要信息 |
|
点击此处可从《原子能科学技术》下载全文 |
