Irreversible reaction

Chlorination of white phosphorus

P4+6Cl24PCl3

Direction
Irreversible
Processes
1
Stated as
Fixed conversion
Heat of reaction
ΔH = -1,281,280 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
P4White phosphorus12185-10-3reactant-1
Cl2Chlorine7782-50-5reactant-6
PCl3Phosphorus trichloride7719-12-2product4

In the processes

  • Phosphorus oxychloride from white phosphorus, chlorine and oxygen via PCl3 (4.0 t/h)Concept · not reviewed

    P_CHLOR · Chlorination of white phosphorusP4 + 6 Cl2 → 4 PCl3

    Stated as
    Fixed conversion
    Phase
    liquid
    Element balance
    Balances in every element
    Conversion
    100 % of P4 (assumed: D-004: the phosphorus fed is consumed completely at steady state (the heel of the reactor-still holds the small phosphorus excess that CN115259114B uses against PCl5; its P:Cl2 mass ratio 1:3.40-3.45 is the stoichiometric 1:3.434); Cl2 fed with 0.05 % molar excess, which leaves with the vent (ASSUMED))
    Heat of reaction
    ΔH = -1,281,280 kJ/kmol at 298.15 K, as written (given: liquid PCl3 from molten P4 and gaseous Cl2: 4 x (-319.7) - 4 x 0.62 kJ/mol P4, liquid formation enthalpies of chemicals (CRC))

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. CN115259114B (2023) Continuous production process of phosphorus trichloride, https://patents.google.com/patent/CN115259114B/en: disclosure items 1-4 and 8, example 1 (molten P 55-60 C, P:Cl2 mass ratio, slight P excess against PCl5, PCl3 purity 99.5 wt%)

    For the reaction · cited by Phosphorus oxychloride from white phosphorus, chlorine and oxygen via PCl3 (4.0 t/h)

  2. D-004: the phosphorus fed is consumed completely at steady state (the heel of the reactor-still holds the small phosphorus excess that CN115259114B uses against PCl5; its P:Cl2 mass ratio 1:3.40-3.45 is the stoichiometric 1:3.434); Cl2 fed with 0.05 % molar excess, which leaves with the vent (ASSUMED)

    For the conversion · cited by Phosphorus oxychloride from white phosphorus, chlorine and oxygen via PCl3 (4.0 t/h)

  3. liquid PCl3 from molten P4 and gaseous Cl2: 4 x (-319.7) - 4 x 0.62 kJ/mol P4, liquid formation enthalpies of chemicals (CRC)

    For the heat of reaction · cited by Phosphorus oxychloride from white phosphorus, chlorine and oxygen via PCl3 (4.0 t/h)