I'm interested in Raney Nickel and its composition. While it's usually a Nickel-Aluminum (Ni-Al) alloy, I recently saw an article mentioning Ni-Zn and Ni-Sn as Raney Nickel too. #RaneyNickel However, I couldn't find a reliable source to confirm this. Can anyone shed light on whether Ni-Zn or Ni-Sn can also be considered Raney Nickel?