Interim report:feasibility of microscale glucose reforming for renewable hydrogen.

Abstract

Micro-scale aqueous steam reforming of glucose is suggested as a novel method of H 2 production for micro fuel cells. Compact fuel cell systems are a viable alternative to batteries as a portable electrical power source. Compared with conventional lithium polymer batteries, hydrocarbon powered fuel cells are smaller, weigh less, and have a much higher energy density. The goal of this project is to develop a hydrocarbon powered microfuel processor capable of driving an existing microfuel cell, and this interim report provides a summary of the engineering information for microscale reforming of carbohydrates and the summarizes the work completed as of September 2006. Work on this program will continue. Gas analysis of the gas evolved from glucose breakdown using a quadrupole mass spectrometer is now possible due do significant modifications to the vacuum chamber and to the mass spectrometer electronics. Effective adhesion of Pt/Al 2 O 3 to 316SS microstructured catalyst plates is still under investigation. Electrophoretic and dip coat methods of catalyst deposition have produced coatings with poor adhesion and limited available Pt surface area.

Unconventional Energy Sources

“…A hydrogen production economics survey summarized the results of numerous studies on the estimated cost for hydrogen production, storage, and transportation technologies near commercialization (Norman 2007). The most optimistic projected cost of hydrogen production from various sources is given in Table 3.19.…”