Silicon-based miniaturized-reformer for portable fuel cell applications

The development of a fully integrated micro-channel fuel processor using low temperature co-fired ceramic (LTCC)

“…The water based catalyst has a high surface area, because the solvent used for the catalyst slurry evaporates during drying and calcinations. To enhance the adhesion between catalyst powder and the LTCC tape, alumina sol was undercoated on the surface of micro-channel and then the suspension of powdered catalysts was coated on the preformed alumina sol layer [7,[11][12][13]. As a result, the coated catalyst was robustly adhered to the micro-channel and hardly peeled off.…”

“…The fuel processor produced the gas composition of 71% H 2 and 25% CO 2 , and more than 93% of methanol conversion was achieved at 300 8C and 2 cm 3 /h of the feed flow rate when CO concentration was maintained below 100 ppm by PROX. PROX were deposited inside micro-channel with water based fill and dry method [7]. In order to prevent poisoning of the anode catalyst during PEMFC operation, the CO concentration of the H 2 rich gas (ca.…”

Measurement of internal temperature, flow and pressure in micro-methanol-reformer using multifunction micro-sensors

“…Kwon [6] fabricated a micro flow plate using silicon fabrication technology and a new catalyst loading method called fill-and-dry coating. The micro-reformer stack, which comprised one vaporizer and two reformers, occupied a volume of 15cm 3 .…”

Ni Catalyst Coating on Fecralloy® Microchanneled Foils and Testing for Methane Steam Reforming

“…Steam reforming is the preferred method for H 2 production in the petrochemical industry [4], but the commonly employed catalyst morphology (Ni supported on Al 2 O 3 pellets) is not suitable for the smaller flows and sizes needed on a domestic scale, mainly due to pressure losses and heat transfer constraints [5,6]. A possible solution is to deposit the catalyst onto high surface-to-volume ratio metallic structures.…”

“…In microreaction technology, noble metals and particularly Rh are the most commonly used ones due to their high kinetics and low deactivation rates [6,11]. But as these metals are very expensive and most of the time not easily available, in some cases Ni is also being used as a catalyst in microreactors [5,12].…”