Computational Studies on Microreactors for the Decomposition of Formic Acid for Hydrogen Production Using Heterogeneous Catalysts

Computational Studies on Microreactors for the Decomposition of Formic Acid for Hydrogen Production Using Heterogeneous Catalysts

Sustainable alternatives to conventional fuels have emerged recently, focusing on a hydrogen-based economy. The idea of using hydrogen (H ) as an energy carrier is very promising due to its zero-emission properties. The present study investigates the formic acid (FA) decomposition for H generation u...

Full description

Saved in:
Bibliographic Details
Published in:Molecules (Basel, Switzerland) Vol. 28; no. 14; p. 5399
Main Authors: Harkou, Eleana, Adamou, Panayiota, Georgiou, Kyproula, Hafeez, Sanaa, Al-Salem, Sultan M, Villa, Alberto, Manos, George, Dimitratos, Nikolaos, Constantinou, Achilleas
Format: Journal Article
Language:English
Published: Switzerland MDPI AG 01-07-2023
MDPI
Subjects:
Acids
Alloys
Carbon dioxide
carbon monoxide
Carbon monoxide poisoning
Catalysts
Comparative analysis
Decomposition
dehydrogenation
Energy industry
Fluid dynamics
Formic acid
Fossil fuels
Hydrogen
Hydrogen production
Hydrogenation
Investigations
membrane
Membrane reactors
microreactor
Organic acids
Poisoning
Poisons
formic acid
carbon monoxide
dehydrogenation
membrane
hydrogen
microreactor
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Sustainable alternatives to conventional fuels have emerged recently, focusing on a hydrogen-based economy. The idea of using hydrogen (H ) as an energy carrier is very promising due to its zero-emission properties. The present study investigates the formic acid (FA) decomposition for H generation using a commercial 5 wt.% Pd/C catalyst. Three different 2D microreactor configurations (packed bed, single membrane, and double membrane) were studied using computational fluid dynamics (CFD). Parameters such as temperature, porosity, concentration, and flow rate of reactant were investigated. The packed bed configuration resulted in high conversions, but due to catalyst poisoning by carbon monoxide (CO), the catalytic activity decreased with time. For the single and double membrane microreactors, the same trends were observed, but the double membrane microreactor showed superior performance compared with the other configurations. Conversions higher than 80% were achieved, and even though deactivation decreased the conversion after 1 h of reaction, the selective removal of CO from the system with the use of membranes lead to an increase in the conversion afterwards. These results prove that the incorporation of membranes in the system for the separation of CO is improving the efficiency of the microreactor.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:1420-3049
1420-3049
DOI:10.3390/molecules28145399