Ni/de-ZSM 催化剂的制备及其氨分解制氢性能.

A series of Ni/de-ZSM (the de-aluminized ZSM is named as de-ZSM) catalysts were prepared by impregnation method, the catalysts were characterized by XRD, TEM, H2-TPR, XPS, BET, and their performance of ammonia decomposition to produce hydrogen has also been investigated. The results show that when the loading amount of Ni reaches 5%, Ni nanoparticles in the 5%Ni/de-ZSM catalyst are highly dispersed and the catalytic activity is the best. When temperature rises to 650 ℃ and the space velocity is 30 000 mL/(h·g), the conversion rate of ammonia decomposition is as high as 90%, the hydrogen generation rate reaches 28.41 mmol/(min·g). The catalyst also shows excellent catalytic stability, which can effectively catalyze the ammonia decomposition up to 40 h. [ABSTRACT FROM AUTHOR]