Special Issue "Structured Catalysts for Catalytic Processes Intensification"
Deadline for manuscript submissions: closed (30 September 2018)
Process intensification is ‘‘any chemical engineering development that leads to a substantially smaller, cleaner and more energy-efficient technology’’. In this direction, in the present issue, we want to report the application of structured catalysts as a viable solution in the process intensification.
In recent years, the spread of structured catalysts even in the most traditional processes of the chemical industry has certainly been one of the most interesting technological innovations in heterogeneous catalysis.
In particular, the possibility of making such carriers with different complex geometric structures, and with different types of materials with very well defined physical properties, generated many considerations on the potential effects on the performances of the catalytic reactor.
Several papers evidenced that structured catalysts (honeycomb, foams) improve heat and material transfer mechanisms between gaseous and solid phases.
In particular, by selecting a high thermal conductive structured substrate, an optimal thermal management in the catalytic volume will be achieved. Such aspect on one hand improves endothermic processes, by maximizing heat transfer from heating medium to the catalytic volume and by reducing the temperature gradient due to the reaction endothermicity.
On the other hand in exothermic processes, the possibility to realize a heat back-diffusion through the carrier structure of the catalytic bed, apart to allow a better exploiting of the catalytic volume, helps to mitigate temperature rising of the process, minimizing risks of hot-spot phenomena.
Considering that another source of initiation of explosion could be a hotspot at the catalyst surface, the use of a structured carrier may enhance operating of difficult to control reactions in a wider range of operation conditions.
Such aspects, on one hand improve catalytic performances, and on the other increase catalyst lifetime, as well as the intrinsic safety of a chemical process, so resulting in an effective process intensification.
The special issue covers a wide range of different aspects related structured catalysts and reactors, starting by catalyst preparation and characterization, experimental tests results and mathematical modeling, and innovative applications as membrane catalytic reactors.
Dr. Vincenzo Palma
Manuscript Submission Information
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- structured catalysts and reactors
- catalytic layer
- thermal properties
- membrane catalytic reactor