Dissociation, molweight, and vibrational spectra of aqueous sodium silicate solutions

摘要：

Particles in 3 to 0.2 mole SiO2/L aqueous Na-silicate solutions are only partially dissociated. Their average molweight (AMW) varies with their Na/Si ratio and concentration. Combined molecular spectroscopic and AMW measurements suggest that only some of the most diluted solutions contain overwhelmingly monomer silicate anions and the average silicate particles contain more than 10 SiO4 tetrahedral units in some of the more concentrated solutions. Both the dissociation and the hydrolysis affect the FTIR and Raman spectra of dissolved silicates making the revision of some earlier band assignments necessary.

作者: Istvan Halasz Runbo Li Mukesh Agarwal Neil Miller

作者单位: PQ Corporation, R & D Center, 280 Cedar Grove Rd., Conshohocken, PA 19428 (USA)

会议类型: 国际会议

会议名称: 第15届国际分子筛大会

会议地点: 北京

会议语种:英文

在线出版日期: 2007-08-12（万方平台首次上网日期，不代表论文的发表时间）