Reversible reaction

CH4O+NH3CH5N+H2O

Direction
Reversible (an equilibrium)
Processes
1
Stated as
Equilibrium
Heat of reaction
ΔH = -16,474 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
CH4OMethanol67-56-1reactant-1
NH3Ammonia7664-41-7reactant-1
CH5NMethylamine (monomethylamine)74-89-5product1
H2OWater7732-18-5product1

In the processes

  • Methylamines (MMA, DMA, TMA) from methanol and ammoniaConcept · level Balanced · not reviewedEvidence outdated

    MMA_SYNCH3OH + NH3 ⇌ MMA + H2O

    Stated as
    Equilibrium
    Element balance
    Balances in every element
    Heat of reaction
    ΔH = -16,474 kJ/kmol at 298.15 K, as written (calculated: ideal-gas formation enthalpies at 298.15 K (process/materials.yaml, ATcT))
    Catalyst
    Amorphous silica-alumina dehydration catalyst · active phase acidic silica-alumina · on silica gel with about 10-15 wt% alumina (US 3,387,032 A, Example 1)
    Operating window
    623.15–723.15 K (350–450 °C), 1,135–2,515 kPa (11.35–25.15 bar) (given: 350-450 C and 150-300 psig preferred (US 3,387,032 A, description of the reactor; US 4,283,254 A, background: 350-450 C, 200-350 psig); pressures converted to kPa(a))
    Poisons
    formaldehyde and other aldehydes in the feed (coke)

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. US 4,283,254 A, background

    For the reaction · cited by Methylamines (MMA, DMA, TMA) from methanol and ammonia

  2. doi:10.1016/S0920-5861(97)00003-5

    For the reaction · cited by Methylamines (MMA, DMA, TMA) from methanol and ammonia

  3. ideal-gas formation enthalpies at 298.15 K (process/materials.yaml, ATcT)

    For the heat of reaction · cited by Methylamines (MMA, DMA, TMA) from methanol and ammonia

  4. US 3,387,032 A (Leonard), steam-deactivated silica-alumina

    For the catalyst · cited by Methylamines (MMA, DMA, TMA) from methanol and ammonia

  5. US 7,435,855 B2 (BASF): coke deactivation, regeneration by controlled burn-off at 350-650 C (description)

    For the catalyst · cited by Methylamines (MMA, DMA, TMA) from methanol and ammonia