A fluorine bomb calorimetric determination of the standard molar enthalpy of formation of SILICON DISULFIDE (cas 13759-10-9) SiS2(cr) at the temperature 298.15 K. Enthalpies of dissociation of Si–S bonds
-
Add time:09/29/2019 Source:infona.pl
A synthesis of high-purity SILICON DISULFIDE (cas 13759-10-9) SiS 2 is described, and the F.t.-Raman spectrum of the solid is reported for the first time. The standard massic energy of reaction of SiS 2 (cr) with fluorine was measured in a bomb calorimeter. The combustion reaction was shown to proceed as follows: SiS 2 (cr)+8F 2 (g)=SiF 4 (g)+2SF 6 (g). The derived standard molar enthalpy of formation is: Δ f H m o (SiS 2 , cr, 298.15 K)=−(254.6±2.9) kJ·mol −1 . This value differs significantly from those determined by solution-reaction calorimetry, but is in fair agreement with results obtained by means of third-law treatments of high-temperature equilibria. The ratio of molar enthalpies of dissociation of the “first” and “second” bonds in SiS 2 (g), κ=D m o (S–SiS)/D m o (SiS)=(0.57±0.03), is similar to κs reported previously for SiO 2 and SiSe 2 .
We also recommend Trading Suppliers and Manufacturers of SILICON DISULFIDE (cas 13759-10-9). Pls Click Website Link as below: cas 13759-10-9 suppliers
Prev:Low-Temperature Plasma-Chemical Deposition of Nanocomposite Antifriction Molybdenum Disulfide (Filler)–Silicon Oxide (Matrix) Coatings
Next:One-Step Nanosecond-Laser Microstructuring, Sulfur-Hyperdoping, and Annealing of Silicon Surfaces in Liquid Carbon Disulfide) - 【Back】【Close 】【Print】【Add to favorite 】
- Related Information
- One-Step Nanosecond-Laser Microstructuring, Sulfur-Hyperdoping, and Annealing of Silicon Surfaces in Liquid Carbon Disulfide09/30/2019
- Low-Temperature Plasma-Chemical Deposition of Nanocomposite Antifriction Molybdenum Disulfide (Filler)–Silicon Oxide (Matrix) Coatings09/28/2019
- From Silylone to an Isolable Monomeric SILICON DISULFIDE (cas 13759-10-9) Complex10/01/2019
- Electronic structure of low-pressure and high-pressure phases of SILICON DISULFIDE (cas 13759-10-9)09/27/2019
- Mechanistic investigation for the axisymmetric transport of nanocomposite molybdenum disulfide-silicon dioxide in ethylene glycol and sphericity assessment of nanoscale particles09/26/2019
- Transfer of ultrathin molybdenum disulfide and transparent nanomesh electrode onto silicon for efficient heterojunction solar cells09/25/2019
-
Health and Chemical more >