Please use this identifier to cite or link to this item:
http://dx.doi.org/10.25673/38492
Title: | Hydrothermal dissolution of technical grade vitreous silica in NaOH solutions to liquid water glasses with higher SiO2:Na2O ratios |
Author(s): | Pfeiffer, Thomas Enke, Dirk Roggendorf, Hans |
Issue Date: | 2021 |
Type: | Article |
Language: | English |
Abstract: | Technical grade vitreous silica was dissolved hydrothermally in NaOH lyes. Liquid sodium water glasses with silica concentrations of up to 26.4 wt % and molar SiO2:Na2O ratios of up to 3.5 were obtained. The dissolution behavior showed two temperature regimes: up to 130 °C the SiO2 content approached a final solubility limit controlled by cristobalite crystallization. Above 130 °C, crystallization of low quartz restricted solubility. The dissolution kinetics were governed by surface area reduction and saturation control according to the Noyce-Whitney law. |
URI: | https://opendata.uni-halle.de//handle/1981185920/38738 http://dx.doi.org/10.25673/38492 |
Open Access: | ![]() |
License: | ![]() |
Sponsor/Funder: | Publikationsfonds MLU |
Journal Title: | Chemie - Ingenieur - Technik |
Publisher: | Wiley-VCH Verl. |
Publisher Place: | Weinheim |
Volume: | 93 |
Issue: | 3 |
Original Publication: | 10.1002/cite.202000107 |
Page Start: | 473 |
Page End: | 481 |
Appears in Collections: | Open Access Publikationen der MLU |
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File | Description | Size | Format | |
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cite.202000107.pdf | 584.91 kB | Adobe PDF | ![]() View/Open |