RenCat’s innovative core technology is the invention of a mixed metal oxide catalyst which can remove trace ammonia impurity in hydrogen to the level of 0.1 ppm. The competitor technology is Pd based membrane which is very expensive and has stability problems.
For generating fuel cell grade hydrogen from ammonia, first it is converted to H2 through a reaction called cracking. The cracking reaction because of thermodynamic reasons, leaves a trace amount of ammonia unconverted. Because ammonia even in trace amounts is a poison for PEMFC, a purification step is needed after the cracking step.
Till now, an expensive and unreliable Pd-membrane based technology has been the way to clean the trace ammonia from the cracked product making H2 generation from ammonia unfeasible.
Rencat uses a non-noble metal catalysts for hydrogen generation and an abundant inexpensive metal oxide to purify the hydrogen. The patented technology generate a PEMFC quality H2 by selectively oxidising all trace ammonia from the H2 containing stream via a process called selective ammonia oxidation (SAO).
Not only that, through extensive research in Rencat has reduced the cost for the cracking step by replacing noble and expensive Ru by abundant and inexpensive FeNi alloy.
RenCat ammonia to H2 generation technology is here to drastically reduce the price and accessibility of fuel cell power.
Because of the use of very inexpensive metal oxides and metal alloys as catalyst, the price of H2 generator will be at least an order of magnitude lower compared to the Pd-membrane based system.