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题名: Synthesis of nanometer magnesia with high surface area by solid-state chemical reaction
作者: Guan Hongbo;  Wang Pei;  Zhao Biying;  Zhu Yuexiang;  Xie Youchang
关键词: nanometer magnesia ;  oxalic acid ;  magnesium acetate ;  solid-state chemical reaction ;  high surface area
刊名: CHINESE JOURNAL OF CATALYSIS
发表日期: 2006-09-01
卷: 27, 期:9, 页:793-798
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Applied ;  Chemistry, Physical ;  Engineering, Chemical
研究领域[WOS]: Chemistry ;  Engineering
英文摘要: Nanometer MgO samples with high surface area, small crystal size, and mesoporous texture were synthesized by thermal decomposition of MgC2O4 center dot 2H(2)O, which was prepared by solid-state chemical reaction between H2C2O4 center dot 2H(2)O and Mg(CH3COO)(2)center dot 4H(2)O. The existence of steam accelerated the sintering of MgO during the decomposition process and MgO with surface area as high as 412 m(2)/g was obtained through calcining the precursor in flowing dry nitrogen at 520 degrees C for 4 h. The samples were characterized by X-ray diffraction, N-2 adsorption, transmission electron microscopy, thermogravimetry, and differential thermal analysis. The as-prepared MgO was composed of nanocrystals with a size of 4-5 nm and formed a wormhole-like porous structure. In addition, the MgO had good thermal stability, and its surface area was still 357 and 153 m(2) /g after calcination at 600 and 800 degrees C for 2 h, respectively. Compared with the MgO sample prepared by the precipitation method, MgO prepared by the solid-state chemical reaction has similar pore size distribution, surface area, and crystal size. The solid-state chemical method has the advantages of low cost, low pollution, and high yield; therefore it appears to be a promising method for the manufacture of nanometer MgO in industry.
关键词[WOS]: MGO ;  POWDERS
语种: 英语
WOS记录号: WOS:000241169700010
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/140103
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Peking Univ, Coll Chem & Mol Engn, Inst Chem Phys, State Key Lab Struct Chem Unstable & Stable Speci, Beijing 100871, Peoples R China

Recommended Citation:
Guan Hongbo,Wang Pei,Zhao Biying,et al. Synthesis of nanometer magnesia with high surface area by solid-state chemical reaction[J]. CHINESE JOURNAL OF CATALYSIS,2006,27(9):793-798.
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