Syngas generation from n-butane with an integrated MEMS assembly for gas processing in micro-solid oxide fuel cell...

Area of Science:

• Materials Science
• Chemical Engineering
• Microtechnology

Background:

• Micro-solid oxide fuel cells (micro-SOFCs) require efficient and compact fuel processing systems.
• Traditional reformers face challenges in miniaturization and thermal management for micro-scale applications.

Purpose of the Study:

• To develop and evaluate an integrated microreformer and carrier system for syngas generation from LPG.
• To assess the performance of the microreformer using micro-electro-mechanical system (MEMS) technologies.

Main Methods:

• Fabrication of a microreformer (12.7 mm × 12.7 mm × 1.9 mm) using MEMS technology.
• Utilizing a rhodium-doped ceria-zirconia nanoparticle foam catalyst within the reformer.
• Integration of the microreformer onto a functional carrier with microfluidic channels and heaters for thermal management.

Main Results:

• Achieved high butane conversion rates of 74%-85% at approximately 550 °C using two distinct heating methods.
• Demonstrated high yields and selectivities for hydrogen and carbon monoxide.
• Confirmed performance comparable to classical lab-scale reformers.

Conclusions:

• The developed MEMS-based microreformer system enables high-performance syngas production from LPG up to 700 °C.
• The functional carrier platform facilitates integration of fuel processing with micro-SOFC membranes.
• This technology offers a promising solution for compact and efficient fuel processing in micro-SOFC systems.