LDH-derived Ni catalyst as an effective catalyst in colophony hydrogenation and process optimization using response surface methodology

摘要

A natural biomass resin acid, colophony, was converted into a hydrogenated colophony over a nickel-based catalyst via catalytic hydrogenation in a 2 L stainless steel autoclave. This effective catalyst was derived from a layered double hydroxide precursor supported on spent fluid catalytic cracking catalyst, and the physicochemical properties of this catalyst were characterized by XRD, SEM, and H-2-TPD techniques. The effects of temperature, pressure, and reaction time, and, in particular, interactions among process variables, on the conversion of abietic-type acids (AA, the main component of colophony) were investigated by response surface modeling through experimental Box-Behnken design. Results showed that temperature exerts the most significant effect on AA conversion and that nearly 100% AA conversion could be achieved at 178 degrees C, H-2 pressure of 5.4 MPa, and reaction time of 94 mins. The experimental value of AA conversion was 99.73% under these conditions. (C) 2015 Taiwan Institute of Chemical Engineers. Published by Elsevier B.V. All rights reserved.