Synthesis of nanometer magnesia with high surface area by solid-state chemical reaction
Guan Hongbo; Wang Pei; Zhao Biying; Zhu Yuexiang; Xie Youchang
KeywordNanometer Magnesia Oxalic Acid Magnesium Acetate Solid-state Chemical Reaction High Surface Area
Indexed BySCI
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
WOS SubjectChemistry, Applied ; Chemistry, Physical ; Engineering, Chemical
WOS Research AreaChemistry ; Engineering
AbstractNanometer 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.
WOS IDWOS:000241169700010
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Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
AffiliationPeking Univ, Coll Chem & Mol Engn, Inst Chem Phys, State Key Lab Struct Chem Unstable & Stable Speci, Beijing 100871, Peoples R China
Recommended Citation
GB/T 7714
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.
APA Guan Hongbo,Wang Pei,Zhao Biying,Zhu Yuexiang,&Xie Youchang.(2006).Synthesis of nanometer magnesia with high surface area by solid-state chemical reaction.CHINESE JOURNAL OF CATALYSIS,27(9),793-798.
MLA Guan Hongbo,et al."Synthesis of nanometer magnesia with high surface area by solid-state chemical reaction".CHINESE JOURNAL OF CATALYSIS 27.9(2006):793-798.
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