Good find !
This is Holmlid’s first choice for densification of hydrogen, IIRC. Plus it is cheap and available. From: Axil Axil I also found this article that explains how the Rydberg matter catalysts work. <http://www.sciencedirect.com/science/article/pii/S2352214315000106> sciencedirect.com/science/article/pii/S2352214315000106