Oybek, E., Bakhronov, K., Sobirjonova, S., Koxkharov, M. and Mamadaliyev, U. 2025. Differential heat of ammonia adsorption and adsorption mechanism in Са4Na4A zeolite. Scientific and Technical Journal of Namangan Institute of Engineering and Technology. 10, 1 (Mar. 2025), 93–100. DOI:https://doi.org/10.61151/stjniet.v10i1.730.