Özet:

In this study, pomegranate peel, one of the organic waste sources, was used for the first time as a direct support material for catalyst production. The aim is to synthesize a high efficiency catalyst using directly the support material to be used in metal containing catalysts that can be used for the production of hydrogen. Within the scope of the study, the catalyst was synthesized by adding ethanol on the powdered pomegranate peel and adding certain proportions (0.3 Pd (mg metal/g catalyst)), (0.15 Mn ( mg metal/g catalyst)), (0.075 Ag ( mg metal/g catalystr)) and 3-aminopropyltrimethoxysilane respectively. Finally, the performance of the obtained catalyst sodium boron hydride for the production of hydrogen by the methanolis reaction was tested. The effect of the amount of NaBH4 was investigated with 1%, 2.5%, 5%, and 7.5% ratio of NaBH4 while the influence of the concentration of catalyst was carried-out at 0.05, 0.1, 0.15, and 0.25 g catalysts. Four different temperatures were tested (20, 30, 40, 50 and 60 °C) to examined the performance of the catalyst under different temperatures. In addition, FTIR and ICP-OES analyzes were carried out for characterization of the produced catalyst. As a result, the reaction rates for 30 and 60 ° C in the 2.5% NaBH4 methanolisation catalyzed by the PP-NH2 / PdMnAg catalyst were found to be 7209.4 and 11334 mLmin-1g.cat-1, respectively. The activation energy of PP-NH2/PdMnAg catalyst was calculated as 22.56 kJ mol-1. Also, reusability experiments were repeated five times under the same conditions and almost 100% conversion was achieved with each use.

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