This video below features Russian Researcher Yuri Malakhov answering questions about replication using both Ni and LAH from which he received from Alexander Parkhomov. Malakhov was part of a team that published a successful Parkhomov replication where a COP of 2.47 was reported — see here:
Thanks to a Russian speaking friend for a translatio of some of the points made here:
– he talks about thorough mixing of Ni and LAH but does not refer to any special preparation
– carbonyl Ni was used. electrolytic Ni did not work out.
– too fine Ni is not good
– reactor must be oriented horizontally, not vertically
– size of his ceramic core is 6mm OD and 150 mm length
– he takes care to centralize the core inside the heater (not touching the heater)
– he is still working on his tests
In the report cited above the authors say that slow heating is important — they took 8-9 hours to do so.