Catalytic dehydrogenation of calcium borohydride by using hydrogel catalyst

Add time:08/09/2019    Source:sciencedirect.com

The aim of this study was to investigate dehydrogenation of calcium borohydride (Ca(BH4)2) in the presence of a catalyst. Co ion-loaded poly(acrylamide-co-acrylic acid) (p(AAm-co-AAc)-Co) hydrogel was taken as a catalyst for this dehydrogenation procedure. Dehydrogenation reactions were performed under three different reaction temperatures, so the rate order and activation energy of the reaction were determined by using experimental results. The amount of hydrogen production increased with temperature and yields of the dehydrogenation reactions were determined as 46.5, 76.0 and 98.5% for 25, 35 and 45 °C, respectively. The activation energy of the dehydrogenation of Ca(BH4)2 was found as 71.39 kJ/mol according to zero order reaction kinetic. In addition, in order to determine reusability of p(AAm-co-AAc)-Co hydrogel, the same catalyst system was used in ten consecutive runs for the hydrolysis of Ca(BH4)2. This catalyst system was used ten times without any structural defect of the catalyst. On the other hand, the conversion ratio decreased from 98.5% to 83.5%.

We also recommend Trading Suppliers and Manufacturers of Calcium borohydride (cas 17068-95-0). Pls Click Website Link as below: cas 17068-95-0 suppliers

Prev:An Anthophyllite (cas 17068-78-9)-hornblende pair from Japan
Next:The synthesis, structure and dehydrogenation of calcium borohydride hydrazinates)