A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 127-19-5, Name is N,N-Dimethylacetamide, molecular formula is C4H9NO. In an article, author is Kantlehner, Willi,once mentioned of 127-19-5, Recommanded Product: 127-19-5.
Hydrogen desorption properties of Li-N-H system (composed of LiH + LiNH2) doped with LiBH4 as catalyst and microwave absorber have been investigated under microwave irradiation. The results showed that pure Li-N-H system can not be heated effectively by microwave irradiation, but it can be rapidly heated up to 500 degrees C within 5 min with 7.6 wt.% LiBH4 addition by a microwave heating with a power of 400 W. Further study indicates that it is Li4BN3H10 generated during the ball milling process that acts as the microwave absorber and catalyst. Li-N-H +7.6 wt% LiBH4 by microwave heating desorbed 4.95 wt.% hydrogen which is 3.6 times more than that of Li-N-H +7.6 wt.% graphite by electric resistance heating at 250 degrees C within 30 min, indicating that the desorption kinetics of Li-N-H system is improved by the combination of the catalytic effect of Li4BN3H10 and microwave irradiation. Furthermore, the isothermal kinetics of Li-N-H with 7.6 wt.% LiBH4 under microwave irradiation were well fitted by Johnson-Mehl-Avrami-Kolmogorov (JMAK) model and the activation energy was 43.9 kJ/mol H-2 which is significantly lower than that under electric resistance heating, demonstrating that the desorption kinetics of Li-N-H with LiBH4 addition could be effectively improved by microwave irradiation.
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Reference:
Amide – Wikipedia,
,Amide – an overview | ScienceDirect Topics