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Kinetics of Catalytic Hydrogenation of 5‐Hydroxymethylfurfural to 2,5‐bis‐Hydroxymethylfuran in Aqueous Solution over Ru/C
Author(s) -
Jain Anandkumar B.,
Vaidya Prakash D.
Publication year - 2016
Publication title -
international journal of chemical kinetics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.341
H-Index - 68
eISSN - 1097-4601
pISSN - 0538-8066
DOI - 10.1002/kin.20992
Subject(s) - chemistry , catalysis , arrhenius equation , aqueous solution , activation energy , hydroxymethylfurfural , hydrolysis , 5 hydroxymethylfurfural , kinetics , reaction rate , thermodynamics , organic chemistry , furfural , physics , quantum mechanics
5‐Hydroxymethylfurfural (5‐HMF) is a cellulosic product of the hydrolysis of biomass, and it is widely considered for the production of several interesting chemicals and derivatives. In the present work, catalytic hydrogenation of 5‐hydroxymethylfurfural to 2,5‐bis‐hydroxymethylfuran was investigated using 5% Ru/C in the aqueous phase. Kinetic data were experimentally obtained over a wide range of temperatures (313–343 K), H 2 partial pressure (0.69–2.07 MPa), initial HMF concentration (19.8–59.5 mM), and catalyst loading (0.3–0.7 kg/m 3 ) in a three‐phase slurry reactor. Disappearance of initial 5‐HMF concentrations was modeled using the power law and Langmuir–Hinshelwood–Hougen–Watson models. A model based on the competitive adsorption of molecular H 2 and HMF was proposed. It is presumed that surface reaction between nondissociatively chemisorbed H 2 and 5‐HMF was rate determining. This model provided the best fit for the kinetic data. From the Arrhenius equation, the activation energy for the surface reaction was found to be 104.9 kJ/mol.