Preparation of cerium dioxide microspheres by internal gelation with cerium citrate as precursor

被引：4

作者：

Ding, Xueqiang ^{[1
]}

Ma, Jingtao ^{[1
]}

Zhou, Xiangwen ^{[1
]}

Zhao, Xingyu ^{[1
]}

Hao, Shaochang ^{[1
]}

Deng, Changsheng ^{[1
]}

Li, Guanxing ^{[1
]}

机构：

[1] Tsinghua Univ, Inst Nucl & New Energy Technol, Collaborat Innovat Ctr Adv Nucl Energy Technol, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China

来源：

JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY | 2019年 / 90卷 / 02期

关键词：

Internal gelation; Cerium citrate; Solvothermal treatment; Cerium dioxide microspheres; THERMAL-DECOMPOSITION; TRANSMUTATION; FABRICATION; COMPOSITE; OXIDES; FUELS; ADS;

D O I：

10.1007/s10971-019-04965-w

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Cerium dioxide microspheres were successfully prepared by internal gelation with cerium citrate as the precursor. The effects of solution containing hexamethylenetetramine (HMTA) and urea on the stability of precursor solution and on the sintered microspheres were investigated. The results indicate that the gelled microspheres were composed of [CeCit.xH(2)O]. Propylene glycol methyl ether was a good solvent for solvothermal treatment. The solution containing HMTA and urea had an important effect on the stability of precursor solution; it also greatly affected the surface morphology, specific surface area, pore volume, and average pore diameter of microspheres. The porous CeO2 microspheres were obtained by sintering at 600? for 2h. CeO2 microspheres prepared with cerium citrate as precursor had a larger pore volume than microspheres prepared with cerium hydroxide as the precursor. [GRAPHICS] .

引用

页码：296 / 304

页数：9

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