Irreversible reaction

Oxidation of SiO to silica fume

2SiO+O22SiO2

Direction
Irreversible
Processes
1
Stated as
Fixed conversion
Heat of reaction
ΔH = -1,621,000 kJ/kmol (one process)
Element balance
Checked: balances
As the processes state itStoichiometry, conversions, heats of reaction and catalyst windows are taken from each process's files with their provenance. The build checks only that each process's equation balances in every element, from the process's own component formulas; it does not check the numbers. A process's design maturity applies to them.

Species

SpeciesNameCASRoleCoefficient
SiOSilicon monoxide10097-28-6reactant-2
O2Oxygen7782-44-7reactant-1
SiO2Silica14808-60-7product2

In the processes

  • Silicon carbide by the Acheson process (5000 kg/h crude SiC, concept)Concept · not reviewed

    SIOX · Oxidation of SiO to silica fumeSiO + 0.5 O2 → SiO2

    Scale
    Written at 0.5 times the scale
    Stated as
    Fixed conversion
    Element balance
    Balances in every element
    Conversion
    100 % of SiO (assumed: D-006: escaping SiO burns to amorphous silica fume above the charge)
    Heat of reaction
    ΔH = -810,500 kJ/kmol at 298.15 K, as written (assumed: formation enthalpies SiO(g) -100.4 and SiO2 -910.9 kJ/mol (quartz value used for the amorphous fume, D-007))

Sources

What the processes cite for this reaction, each source once: for the reaction itself, its conversion, its heat of reaction or its catalyst. As the processes write them; DOIs, US patent numbers and web addresses are linked.

  1. D-006: escaping SiO burns to amorphous silica fume above the charge

    For the conversion · cited by Silicon carbide by the Acheson process (5000 kg/h crude SiC, concept)

  2. formation enthalpies SiO(g) -100.4 and SiO2 -910.9 kJ/mol (quartz value used for the amorphous fume, D-007)

    For the heat of reaction · cited by Silicon carbide by the Acheson process (5000 kg/h crude SiC, concept)