Identification of the products of partial hydrolysis of silicon tetrafluoride by matrix isolation IR spectroscopy

Abstract

Abstract-Matrix isolation Fourier transform IR spectroscopy has been used for studying the products and mechanism of the silicon tetrafluoride reaction with water at various component ratios and reaction dura tions. Assignment of new bands in the spectrum confirms the earlier assumptions of first the formation of a molecular complex with water and later of trifluorosilanol, which finally condenses to give hexafluorodisilox ane.

SiO2-Modified Separators: Stability in LiPF6-Containing Electrolyte Solutions and Effect on Cycling Performance of Li Batteries

“…This observation may be related to the reversible reactions of lithium fluorosilicate species and/or SiF 4 with traces of water which is not consumed in the absence of Li metal anodes. [37][38][39] Thus, during storage in Li|NCM 622 cells, SiO 2 modified separators experience only surface degradation. Obviously, the decrease in water content in Li|NCM 622 cells occurs faster in cycling conditions.…”

Co3O4 Nanoparticle/F, N‐codoped Graphene for High Efficiency Oxygen Reduction and Zinc‐air Battery

“…SiO 2 can further react with excessive NH 4 F to generate SiF 4 , which is volatilized and removed after the Teflon‐lined stainless steel autoclave is opened. Partial hydrolysis products of SiF 4 are soluble in water and can be removed in the subsequent sample washing process [30] . The product was collected by washing and freeze drying and denoted as Co 3 O 4 /F, N‐doped G‐2.…”

“…Partial hydrolysis products of SiF 4 are soluble in water and can be removed in the subsequent sample washing process. [30] The product was collected by washing and freeze drying and denoted as Co 3 O 4 /F, N-doped G-2. Moreover, Co 3 O 4 /F, N-doped G-1 and 3 was synthesized by different addition amounts of CoCl 2 with same other condition.…”