Storing H2 on-board in the form of solid AB, however, has a technical barrier that is typical to any solid fuel that needs to be regenerated. N-ethylcarbazole are liquid organic H2 storage materials which require dehydrogenation catalysts. At the present time, the bottleneck of N-ethylcarbazole dehydrogenation technology is how to develop a catalyst with higher conversion, better selectivity, and stability. Among those catalysts are the binuclear ruthenium and rhodium catalysts, 105 noble metal catalysts, 106 ruthenium-nickel TiO2 supported catalysts 107 . Recent trend, using nickel or other non-precious metals in bimetallic composites with Pd or Ru, is reported. 108