Premium
Studies on silicic acid and its salts: XV. 29 Si NMR study of sodium silicate in solution
Author(s) -
JinXi Wang,
RongSan Chen,
Yan Mao,
ChongDe Li,
JinHua Wei,
HaiCheng Liu,
AnBang Dai
Publication year - 1984
Publication title -
acta chimica sinica english edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 0256-7660
DOI - 10.1002/cjoc.19840020106
Subject(s) - chemistry , degree of polymerization , sodium silicate , silicic acid , aqueous solution , silicate , sodium , inorganic chemistry , salt (chemistry) , polymerization , polymer , organic chemistry , chemical engineering , engineering
The 29 Si NMR study of aqueous solution of sodium silicate of mole ratio SiO 2 to Na 2 O equals one shows that the degree of polymerization of sodium silicate decreases with the decrease of the concentration, but the concentration of monosilicate anion increases, and that the lower the salt concentration, the faster is the rate of increase of the anionic concentration. The effect of SiO 2 /Na 2 O mole ratio and the concentration of sodium silicate on chemical shifts and spin‐lattice relaxation time, T 1 , of Si species and the effect of salt on degree of polymerization of sodium silicate in solution were also investigated.