US 12,448,287 B1
Method of producing hydrogen gas using nanocomposite catalyst
Mohamed Nady Abd El-Hameed Ibrahim, Riyadh (SA); Babiker Yagoub Elhadi Abdulkhair, Riyadh (SA); and Mohamed Khairy Omran, Riyadh (SA)
Assigned to IMAM MOHAMMAD IBN SAUD ISLAMIC UNIVERSITY, Riyadh (SA)
Filed by IMAM MOHAMMAD IBN SAUD ISLAMIC UNIVERSITY, Riyadh (SA)
Filed on May 23, 2025, as Appl. No. 19/217,982.
Int. Cl. C01B 3/06 (2006.01)
CPC C01B 3/065 (2013.01) [C01B 2203/0277 (2013.01); C01B 2203/1023 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of producing hydrogen gas, the method comprising:
hydrolyzing sodium borohydride (NaBH4) with water at a temperature of from about 20 to about 75° C. in the presence of a particulate crystalline nanocomposite catalyst to form the hydrogen gas,
wherein the ratio by weight of sodium borohydride to the particulate crystalline nanocomposite catalyst is from about 1:1 to about 5:1,
wherein the particulate crystalline nanocomposite catalyst comprises:
a tetragonal CaMoO4 crystalline phase;
a CaSiO3 crystalline phase; and,
a graphitic-C3N4 crystalline phase,
wherein at least a fraction of the graphitic-C3N4 is in the form of mesoporous nanosheets.