Hello,
I am struggling to find industrial scale process, which follows the scheme mentioned in my question. Just one of tasks for my assignment, in which I am doing dynamical and steady-state calculations of catalytic pellet.
A, B and C are not necessarily singular reactants, I am mainly interested in a catalytic multistep reaction with first step being reversible and second step that is preferably, but not necessarily irreversible. As for now I am operating on arbitrarily chosen, although physically feasible values for kinetic and thermodynamic parameters, but it would be great to have some real-world comparison.
Ideally, first elementary reaction A->B should take place on 1st catalyst, while B->C on the 2nd catalyst, as my assignment ultimately deals with multifunctional catalytic pellets and reactors. Desired product(s) is C or whatever hides behind C.
If anybody would give me a notice about such (or similiar multistep processes), I would be very grateful.
Sincerely,
Kzysztof
A typical example is the reducive amination reaction (or assimilated). An aldehyde (or ketone) is reversibly condensed with an amine and the resulting imine is reduced. Variants include the attack of the imine by a nucleophile (typically an enol), which is known as the Mannich reaction.
Krzysztof Skrzypek , you can check out the work of the groups of Ye Wang or Xinhe Bao on bifunctional synthesis gas conversion. They converted synthesis gas (A) to oxygenates such as methanol, DME or ketene (B). This reaction A B is in equilibrium and under the conditions they used very much on the side of A. However, they managed to effectively remove B from the equilibrium to form olefins or aromatics (C). The reaction B -> C is virtually not limited by equilibrium. Therefore, they achieved conversions of A much higher than in equilibrium between A and B. The two reaction A B and B -> C use different catalysts.
However, this is not operated in commercial scale yet, as far as I know.
I hope this helps.
Direct synthesis of DME (bifunctional catalyst): CO2 + 3H2 CH3OH + H2O (Cu base catalyst), 2CH3OH (CH3)2O + H2O (zeolite catalyst). Unfortunately both are reversible and they are accompanied by RWGS reaction. However, there is a lot of data on this synthesis in literature. Regards,
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