Premium
Photocatalytic Reforming of Sucrose and Dextrose for Hydrogen Production on Pd/TiO 2
Author(s) -
Beasley Charles,
Gnanamani Muthu Kumaran,
Qian Dali,
Hopps Shelley D.
Publication year - 2021
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.202101277
Subject(s) - catalysis , photocatalysis , hydrogen production , sodium borohydride , hydrogen , chemistry , sucrose , yield (engineering) , nuclear chemistry , kinetics , metal , reactions on surfaces , palladium , inorganic chemistry , materials science , organic chemistry , metallurgy , quantum mechanics , physics
Photocatalytic reforming of sucrose and dextrose was performed on TiO 2 supported Pd (0.25, 0.5, 1.0, 1.5, and 2.0 wt%) catalysts under UV light irradiation. Hydrogen production increases with increasing the sucrose concentration. Semiconductor TiO 2 has shown benefit from palladium additions up to about 0.5–1.0 wt%; however, the further metal increase has no benefits. Kinetics study reveals that the apparent reaction rate for hydrogen evolution follows the Langmuir‐Hinshelwood (LH) mechanism. The equilibrium constant (K) determined was 1.078 for 1 %Pd/TiO 2, while 2 %Pd/TiO 2 exhibited 0.122, which is an order of magnitude less than the former catalyst. Hydrogen yield from dextrose is higher than sucrose under similar reaction conditions. Furthermore, the catalyst pretreated by sodium borohydride displayed higher activity for dextrose reforming than untreated, implying that metallic Pd enhanced hydrogen production.