The kinetic pathway of decomposition of MgSiO3 by alkali fusion using sodium hydroxide
The mechanism of decomposition of prepared MgSiO3 by alkali fusion using sodium hydroxide was studied by Raman spectroscopy in situ combining with X-ray diffraction analyses. The results show that alkali fusion MgSiO3 breaks down the bonds between bridging oxygen and silicon (Si-O-Si) within its chain structure. Therefore, the metasilicate with the chain structure is changed to the orthosilicate with the island structure during the fusion process. Sodium ions substitute for Mg ions in magnesium orthosilicate successively, and both Mg2SiO4 and Na2MgSiO4 are the reaction intermediates. The Na2SiO4 and Mg(OH)2 are obtained finally for the alkali fusion process.
Raman spectroscopy alkali fusion MgSiO3 kinetic pathway
Qian XU Min XU Riqiang LIU Zirui WANG Yuchun ZHAI
School of Materials Science and Metallurgy, Northeastern University, Shenyang, 110004, PR China
国际会议
Ninth International Conference on Molten Slags,Fluxes and Salts(第九届国际熔渣、溶剂与熔盐学术会议 MOLTEN12)
北京
英文
1-8
2012-05-27(万方平台首次上网日期,不代表论文的发表时间)