Scholarly record
COMPARISON OF SURFACE PROPERTIES OF CUBIC AND OCTAGONAL LATTICE STRUCTURES FOR POTENTIAL CATALYTIC APPLICATIONS
Abstract
A pivotal role in pollution control and climate change mitigation within the transportation sector, particularly in internal combustion engine (ICE) vehicles, plays the catalytic converters. It functions by converting harmful emissions into less harmful substances before they are released into the atmosphere. This process reduces key pollutants that contribute to both air quality degradation and climate change. The catalytic converter thus serves as a critical technology in improving urban air quality and mitigating the broader environmental impact of vehicle emissions. For lasting climate solutions, catalytic converters must eventually be complemented by cleaner technologies such as electric vehicles and alternative fuels, or another solution is to use more efficient metamaterials based on nature inspired cellular structures with larger surfaces to absorb harmful gases. The article deals with the comparison of three types of lattice structures and their surfaces depending on the volume fraction as a very important property for successful catalytic reactions in cars. In the research three types of lattice structures (Cubic, Octagon and Cubic Subtraction) were investigated and their properties compared. A constant cell size of 10 mm was chosen, while the surface area was evaluated for a sample with 2x2 cells to take into account the connection of the cells. The volume fraction of the structure (as an additional porosity factor) was controlled by the strut diameter, and with this in mind, the dependence of the volume fraction of the structure on the strut diameter was also analyzed. Finding the dependencies and their mathematical formulation, and subsequent comparison of functional dependencies, showed that among the selected structures, the Cubic structure is the most suitable structure for catalytic applications.
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