以(CH2OH)2和H2O的混合溶液为溶剂, Ce(NO3)3?6H2O和In(NO3)3?4.5H2O分别为Ce和In源, 采用溶剂热法在200 ℃下合成了前驱体, 再经500 ℃焙烧2 h制备了In3+掺杂的CeO2粉末. 通过研究一系列In3+的添加浓度, 得出In3+掺杂CeO2中In3+的固溶度为1% (摩尔分数). In3+掺杂对CeO2形貌的影响不大, 固溶In3+前后的CeO2颗粒形貌均为层状结构, 但当In3+的添加量高于固溶度时, 出现了细碎的第二相颗粒. In3+饱和掺杂浓度时CeO2粉末的比表面积高于未掺杂的CeO2, 达到100 m2/g, 当In3+的添加量大于等于3%时比表面积有所下降. In3+添加量对储氧能力的影响为: 首先, In3+的引入能够明显降低CeO2的低温还原峰温度; 其次, 当In3+的添加量为饱和浓度1%时, CeO2的低温储氧能力由未掺杂的3.6×10-4 mol/g提高到4.4×10-4 mol/g; 当In3+的浓度大于等于3%时, 试样的低温储氧能力先有所下降, 随后趋于稳定. 不同In3+添加量CeO2粉末的晶格常数、氧空位浓度、比表面积和低温储氧能力都在1% In3+固溶度的位置出现了转折. 低温储氧能力与比表面积和氧空位浓度都有关联, 是二者综合作用的结果.
","authors":[{"authorName":"张世政","id":"1f089435-95b6-45b7-bfa2-14e7a119268e","originalAuthorName":"张世政"},{"authorName":"徐要辉","id":"12d6a0aa-ebc6-4270-bc92-efea22377e8e","originalAuthorName":"徐要辉"},{"authorName":"汪庭语","id":"98939ede-e5ee-4ed4-a9bd-4a2007011458","originalAuthorName":"汪庭语"},{"authorName":"李锐星","id":"d749d6dd-0994-423b-9255-dae0a310749e","originalAuthorName":"李锐星"},{"authorName":"才鸿年","id":"796bd1c3-9f9b-4b7e-979a-16b8d92d9344","originalAuthorName":"才鸿年"}],"categoryName":"Orginal Article","doi":"10.11900/0412.1961.2015.00516","fpage":"607","id":"d404fdea-db89-49a0-8bc7-b088b37853f3","issue":"5","journal":{"abbrevTitle":"JSXB","coverImgSrc":"journal/img/cover/JSXB.jpg","id":"48","issnPpub":"0412-1961","publisherId":"JSXB","title":"金属学报"},"keywords":[{"id":"45376c5a-aae3-4fc0-8cbf-1f66beba3f8e","keyword":"CeO2","originalKeyword":"CeO2"},{"id":"f7f3ee5c-717b-41c6-8eaa-60f05d7888c9","keyword":"In3+","originalKeyword":"In3+"},{"id":"034c02bf-ea03-4977-9364-dffb09b126ef","keyword":"掺杂","originalKeyword":"掺杂"},{"id":"c5be8143-3499-44a2-8aba-a8b66d5baa5a","keyword":"储氧能力","originalKeyword":"储氧能力"},{"id":"67df402b-0889-442b-9f9d-8c7e2ee94321","keyword":"溶剂热","originalKeyword":"溶剂热"}],"language":"zh","publisherId":"C20150516","title":"In3+掺杂CeO2的固溶度及其储氧能力*","volume":"52","year":"2016"},{"abstractinfo":"以(CH2OH)2和H2O的混合溶液为溶剂,Ce(NO3)3·6H2O和In(NO3)3·4.5H2O分别为Ce和In源,采用溶剂热法在200℃下合成了前驱体,再经500℃焙烧2h制备了In3+掺杂的CeO2粉末.通过研究一系列In3+的添加浓度,得出In3+掺杂CeO2中In3+的固溶度为1%(摩尔分数).In3+掺杂对CeO2形貌的影响不大,固溶In3+前后的CeO2颗粒形貌均为层状结构,但当In3+的添加量高于固溶度时,出现了细碎的第二相颗粒.In3+饱和掺杂浓度时CeO2粉末的比表面积高于未掺杂的CeO2,达到1 00 m2/g,当In3+的添加量大于等于3%时比表面积有所下降.In3+添加量对储氧能力的影响为:首先,In3+的引入能够明显降低CeO2的低温还原峰温度;其次,当In3+的添加量为饱和浓度1%时,CeO2的低温储氧能力由未掺杂的3.6× 10 4 mol/g提高到4.4×10-4 mol/g;当In3+的浓度大于等于3%时,试样的低温储氧能力先有所下降,随后趋于稳定.不同In3+添加量CeO2粉末的晶格常数、氧空位浓度、比表面积和低温储氧能力都在1%In3+固溶度的位置出现了转折.低温储氧能力与比表面积和氧空位浓度都有关联,是二者综合作用的结果.","authors":[{"authorName":"张世政","id":"18e2228a-7976-4617-9931-aed1e953f1db","originalAuthorName":"张世政"},{"authorName":"徐要辉","id":"080740d3-1679-4b24-9882-3c5eca7b00f1","originalAuthorName":"徐要辉"},{"authorName":"汪庭语","id":"f3830b40-0ed0-46d3-8a6b-18db73f41939","originalAuthorName":"汪庭语"},{"authorName":"李锐星","id":"89531894-18df-45dd-852b-db54f8080773","originalAuthorName":"李锐星"},{"authorName":"才鸿年","id":"ffcd5486-57b1-4d93-8028-23a892723617","originalAuthorName":"才鸿年"}],"doi":"10.11900/0412.1961.2015.00516","fpage":"607","id":"2ea8d886-ef8f-4931-8b62-bf08481fd5f5","issue":"5","journal":{"abbrevTitle":"JSXB","coverImgSrc":"journal/img/cover/JSXB.jpg","id":"48","issnPpub":"0412-1961","publisherId":"JSXB","title":"金属学报"},"keywords":[{"id":"22e9cd8b-6d36-402a-9402-f2a1ae3da395","keyword":"CeO2","originalKeyword":"CeO2"},{"id":"48c44518-1d12-464f-bdfe-3b2277b1b59f","keyword":"In3+","originalKeyword":"In3+"},{"id":"3d4a5bfb-1b0e-4fb4-996e-f21cfc0bd11f","keyword":"掺杂","originalKeyword":"掺杂"},{"id":"a39d76ed-ee23-4f1a-86fc-0540cda43086","keyword":"储氧能力","originalKeyword":"储氧能力"},{"id":"988d62a4-691f-4329-9b4e-413a0dcfc112","keyword":"溶剂热","originalKeyword":"溶剂热"}],"language":"zh","publisherId":"jsxb201605012","title":"In3+掺杂CeO2的固溶度及其储氧能力","volume":"52","year":"2016"},{"abstractinfo":"采用机械合金化方法,对Fe100-xWx(x=5,15,33.3,45,50,70,85,95)二元合金系统进行了机械合金化研究,用X射线衍射仪分析了球磨后的合金粉末的结构,用SEM对样品的形貌进行了分析.结果表明:铁在钨中的固溶度大于30%;从理论上对Fe-W系统的固溶度进行计算,计算结果说明铁在钨中的固溶度与实验得到的结果相符.","authors":[{"authorName":"李建映","id":"c671b6a0-0f0f-407f-a6ae-8bb7257848c8","originalAuthorName":"李建映"},{"authorName":"欧阳义芳","id":"e6eee3d6-6db3-4103-a106-7aa1d9e730cb","originalAuthorName":"欧阳义芳"},{"authorName":"钟夏平","id":"5e426bdd-3662-4f27-bcdf-937403446a9b","originalAuthorName":"钟夏平"},{"authorName":"黄津梨","id":"194eebf6-9fe8-4345-a11d-c3ac1cb84dbd","originalAuthorName":"黄津梨"}],"doi":"","fpage":"56","id":"0ee4ebd2-fafc-4221-9b86-f0687dadf42a","issue":"z3","journal":{"abbrevTitle":"XYJSCLYGC","coverImgSrc":"journal/img/cover/XYJSCLYGC.jpg","id":"69","issnPpub":"1002-185X","publisherId":"XYJSCLYGC","title":"稀有金属材料与工程"},"keywords":[{"id":"f161d07b-6cf0-4edc-9636-bb76d6415796","keyword":"机械合金化","originalKeyword":"机械合金化"},{"id":"10c332dd-f419-40dd-bdc1-5351fa59baef","keyword":"Fe-W合金","originalKeyword":"Fe-W合金"},{"id":"88f627e7-f9b8-4def-8a3c-49d77f0910ea","keyword":"X射线衍射","originalKeyword":"X射线衍射"},{"id":"d345bbb0-9dc1-44da-b55c-50f862d05a5e","keyword":"固溶度","originalKeyword":"固溶度"}],"language":"zh","publisherId":"xyjsclygc2007z3014","title":"Fe-W合金机械合金化及扩展固溶度研究","volume":"36","year":"2007"}],"totalpage":1418,"totalrecord":14171}