Reversible reaction

Hydrogen bromide synthesis (bromine vapour burnt in hydrogen)

H2+Br22HBr

Direction
Reversible (an equilibrium)
Processes
1
Stated as
Fixed conversion
Heat of reaction
ΔH = -102,580 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
H2Hydrogen1333-74-0reactant-1
Br2Bromine7726-95-6reactant-1
HBrHydrogen bromide10035-10-6product2

In the processes

  • Hydrogen bromide synthesis burner with catalytic finishing and absorption (48 wt-% hydrobromic acid)Concept · not reviewed

    HBR_SYN · Hydrogen bromide synthesis (bromine vapour burnt in hydrogen)H2 + Br2 ⇌ 2 HBr

    Stated as
    Fixed conversion
    Element balance
    Balances in every element
    Conversion
    99.97 % of Br2 (given: US 3 988 427 A (Ethyl Corp.), Example: bromine conversion of the flame reactor about 99.97 mol-% on average (99.96-99.99) with about 2.6 mol-% hydrogen excess; applied at 5 mol-% excess (D-004, D-005))
    Heat of reaction
    ΔH = -102,580 kJ/kmol at 298.15 K, as written (given: ATcT via cheme chemistry thermo (chemicals package): 2 x dHf(HBr, g) -35.85 less dHf(Br2, g) +30.88 kJ/mol at 298.15 K; Wikipedia 'Hydrogen bromide' infobox gives dHf(HBr) -36.13 to -36.45 kJ/mol (-103.1 to -103.8 kJ per extent))

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. https://patents.google.com/patent/US3988427

    For the reaction · cited by Hydrogen bromide synthesis burner with catalytic finishing and absorption (48 wt-% hydrobromic acid)

  2. https://patents.google.com/patent/US6036936

    For the reaction · cited by Hydrogen bromide synthesis burner with catalytic finishing and absorption (48 wt-% hydrobromic acid)

  3. https://en.wikipedia.org/wiki/Hydrogen_bromide

    For the reaction · cited by Hydrogen bromide synthesis burner with catalytic finishing and absorption (48 wt-% hydrobromic acid)

  4. doi:10.1002/14356007.a04_405 (Ullmann, Bromine Compounds: route identity only, full text not read)

    For the reaction · cited by Hydrogen bromide synthesis burner with catalytic finishing and absorption (48 wt-% hydrobromic acid)

  5. US 3 988 427 A (Ethyl Corp.), Example: bromine conversion of the flame reactor about 99.97 mol-% on average (99.96-99.99) with about 2.6 mol-% hydrogen excess; applied at 5 mol-% excess (D-004, D-005)

    For the conversion · cited by Hydrogen bromide synthesis burner with catalytic finishing and absorption (48 wt-% hydrobromic acid)

  6. ATcT via cheme chemistry thermo (chemicals package): 2 x dHf(HBr, g) -35.85 less dHf(Br2, g) +30.88 kJ/mol at 298.15 K; Wikipedia 'Hydrogen bromide' infobox gives dHf(HBr) -36.13 to -36.45 kJ/mol (-103.1 to -103.8 kJ per extent)

    For the heat of reaction · cited by Hydrogen bromide synthesis burner with catalytic finishing and absorption (48 wt-% hydrobromic acid)