OP-II-3

PP-III-33PHOTOCATALYTIC HYDROGEN PRODUCTION FROM WATERSOLUTION OF GLYCEROLEkaterina Kozlova 1,2 , Tatyana Korobkina 1 , Alexander Vorontsov 1,21 Boreskov Institute of Catalysis SB RAS, Novosibirsk, Russia, pr. Lavrentieva, 5,kozlova@catalysis.ru2 Novosibirsk State University, Novosibirsk, Russia, Pirogova 2In recent years there have been intensive efforts toward the development of noveltechnologies for the production of hydrogen from renewable resources, mainly waterand biomass. Among the various biomass-derived compounds proposed asfeedstock for hydrogen production, glycerol (C 3 H 8 O 3 ) is of special interest because itis produced in large amounts (10 wt.%) as by-product of the chemical reaction(transesterification) in which vegetable oil is processed into biodiesel [1]. One of themost promising method of the simultaneous hydrogen production and glycerolutilization is the photocatalytic oxygen free glycerol destruction. It is carried out onthe surface of a semiconductor photocatalyst with a noble metal (e.g. Pt/TiO 2 )according to the equation:C 3 H 8 O 3 + 3H 2 O = 3CO 2 + 7H 2 .In this work, we aimed at the investigation of photocatalytic hydrogen productionfrom water solution of glycerol under UV-light irradiation. Photocatalytic hydrogenemission from glycerol solution was carried out by the following method. Watersuspension with 1%Pt/TiO 2 catalyst and glycerol was placed in a sealed thermostaticreactor without oxygen and illuminated by a 1000 W high-pressure mercury lampunder continuous stirring. Glycerol concentration varies from 6 to 60 mM, catalystconcentration was 0.75 g/L, temperature 20°C. Concentration of hydrogen wasmeasured by means of gas chromatograph LChM-8. We obtained the dependence ofthe initial hydrogen evolution rate vs. initial glycerol concentration. One can see thatthe rate of the hydrogen production grows with the initial concentration at the lowinitial concentrations and practically does not change at the initial concentrationsabove 12 mM, that corresponds to Langmuir-Hinshelwood mechanism.500