Premium
A Novel Sodium Silicate Fluoride Solution and a H 2 Gas Formed by a Reaction Between Si and an Aqueous Solution of NaOH and NaF
Author(s) -
Tsuyumoto Isao
Publication year - 2005
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2005.00254.x
Subject(s) - sodium silicate , aqueous solution , alkali metal , inorganic chemistry , silicate , fluoride , hydrogen fluoride , chemistry , raman spectroscopy , silicon , hydrogen , sodium fluoride , materials science , organic chemistry , metallurgy , physics , optics
Oxidation of Si in an alkali solution has attracted much attention to produce hydrogen gas from Si wastes. It was found that hydrogen gas was generated from Si in NaOH and NaF solution with more than 10 times reaction rate than in the NaOH solution. The reaction by‐product was a sodium silicate fluoride, Na x + z Si y O 2 y + x /2 F z solution, and it proved to transform to a glass foam by boiling. The Raman spectrum suggested that the silicon and oxygen atoms in the silicate anions were arranged in a sheet‐like structure. This may affect the behavior to form the glass foam.