TY - JOUR AB - Photocatalytic hydrogen generation from aqueous solutions of glycerol and crude glycerol (byproduct of biodiesel manufacturing) were compared using Pt/TiO2 and CuOx/TiO2 catalysts. Glycerol solutions generated more H-2 than crude glycerol solutions, with the H-2 generation rate approximately 2.5 times higher for Pt/TiO2 and approximately 4 times higher for CuOx/TiO2. Pt/TiO2 produced more H-2 than CuOx/TiO2, with a ratio nearly 2.5 times higher for glycerol and nearly 3.5 times higher for crude glycerol. Ion exchange of crude glycerol solutions to replace Na+ with Li+ or K+ had little impact on reactions with CuOx/TiO2 whereas ion exchange with Li+ moderately reduced reaction rates with Pt/TiO2. An anti-foam agent reduced foaming problems associated with higher concentrations of crude glycerol but itself degraded. The addition of 0.4 mM NaH2PO4 reduced the H-2 generation rate by nearly 60 % whereas the presence of 0.4 mM NaCl, 0.4 mM NaNO3 or 0.2 mM Na2SO4 reduced the H-2 generation rate by only 10-20 % over the course of the reaction. AD - Villanova Univ, Dept Chem Engn, Villanova, PA 19085 USA AN - WOS:000309556400003 AU - Skaf, D. W. AU - Natrin, N. G. AU - Brodwater, K. C. AU - Bongo, C. R. DA - Oct DO - 10.1007/s10562-012-0886-1 IS - 10 J2 - Catal Lett KW - photocatalytic LA - English N1 - 016ys PY - 2012 SN - 1011-372x SP - 1175-1179 ST - Comparison of Photocatalytic Hydrogen Production from Glycerol and Crude Glycerol Obtained from Biodiesel Processing T2 - Catalysis Letters TI - Comparison of Photocatalytic Hydrogen Production from Glycerol and Crude Glycerol Obtained from Biodiesel Processing UR - ://WOS:000309556400003 VL - 142 ID - 8134 ER -