Effect of metal loading processes on the stability and thermal transformation of Co2Â +- and Cu2Â +-zeolite Y prepared from Egyptian kaolin

► We study the effects of loading procedure in the incorporation of TM in zeolite Y. ► Synthetic zeolite Y prepared from Egyptian kaolin has been used. ► The type of TM affects the stability and thermal transformation of zeolite. ► Loading processes affect the stability and thermal transformation of zeolite.