The Holmlid reaction is an example of such a lithium free LENR reaction. The accumulation of infrared photons on the surface of the HRM is the active agent that produces the LENR effect.
The energy excess of a lithium free LEN reactions is not so big as in E-cat with lithium (as in the first Focardi papers with nickel roads). The LEN reactions in such setups are likely to be different from that in E-cat. All data are important. But, IMHO, just from the point of LENR field development, it will be more effective at first to solve the more prominent LENR mechanism on a base of lithium usage, since nobody will stay against such huge amount of released energy.