from first principles PP-I-1

PP-IV-3Mechanistic Aspects of Catalytic Hydrogen Production from BiomassDerived Formic Acid at about Ambient TemperatureBulushev D.A. 1,2 , Jia L. 1,2 , Beloshapkin S. 2 , Ross J.R.H. 11 Chemical & Environmental Sciences Department, University of Limerick, Limerick, Ireland2 Materials & Surface Science Institute, University of Limerick, Limerick, Irelanddmitri.bulushev@ul.ieDuring last few years, it is observed a great interest to formic acid (FA) which can be used forhydrogen storage. FA is a by-product of biomass hydrolysis obtained in big concentration. Pdbased catalysts are often considered as the best catalysts for hydrogen generation from FA [1].The objectives of the present work were to further improve the activity of these catalysts bydoping with alkali metal ions and to understand the reasons of the improved activity.The rates of the reaction over a 1 wt.% Pd/C catalyst with mean particle size of 3.6 nm couldbe increased by 10-100 times by doping with K-ions taken in optimal concentration (10 wt.%)(Fig. 1a) [2]. The turnover frequency reached 1 s -1 at 353 K being comparable with thosereported for homogeneous catalysts. Potassium was the best promoter than other alkali metalsused (Cs, Na and Li) (Fig. 1b). The K-doped carbon support was inactive. The K-dopedcatalyst showed excellent hydrogen selectivity (