What is it about?
Hydrogen, a clean fuel, is expected to reduce the consumption of fossil fuels, however, it is difficult to store and transport. Where hydrogen is abundant, it is bound to toluene to produce methylcyclohexane (both liquids). The latter can be stored and transported worldwide where it is needed to be dehydrogenated producing toluene and hydrogen again and so on.
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Why is it important?
The temperature dependence of the equilibrium constant of methylcyclohexane dehydrogenation to toluene is a pre-requisite for the design of the reactor. Also hydrogen is an important material in renewable energy applications. The paper has attracted 177 viewers so far, indicating considerable interest.
Perspectives
The reader`s attention is drawn to that the equilibrium composition data reported in the paper refer to ideal gas MTH-system. These data give fairly accurate values of the equilibrium compositions at temperatures above Ca. 360°C and pressures below Ca. 6 bars. A treatment of the system with real gases (e.g. Van der Waals or Redlich-Kwong equations of state) would be beneficial. Otherwise, further extensive experimental work is necessary to obtain the real gas system equilibrium compositions. This can be achieved by employing the proposed reactor-hydrogen selective membrane unit through manipulating the liquid hourly space velocity and catalyst dilution to ensure isothermal reactor operation, at least in the lower half of the reactor.
jawad Ali
Read the Original
This page is a summary of: Critical examination of equilibrium constants proposed for the methylcyclohexane dehydrogenation to toluene, Chemical Engineering Communications, June 2018, Taylor & Francis,
DOI: 10.1080/00986445.2018.1474105.
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