Premium
Dynamics of a fixed‐bed adsorptive reactor for synthesis of diethylacetal
Author(s) -
Silva Viviana M. T. M.,
Rodrigues Alírio E.
Publication year - 2002
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690480319
Subject(s) - chemistry , adsorption , isothermal process , orthogonal collocation , mass transfer , langmuir , thermodynamics , catalysis , chemical engineering , organic chemistry , chromatography , collocation method , ordinary differential equation , physics , quantum mechanics , engineering , differential equation
Diethylacetal from ethanol and acetaldehyde catalyzed by the acid resin Amberlyst 18 was synthesized. Adsorption and reaction experiments were performed in a laboratory‐scale fixed‐bed adsorptive reactor, operating isothermally at 15°C and at atmospheric pressure. Experimental results of dynamic adsorption of binary nonreactive mixtures were used to obtain multicomponent adsorption equilibrium isotherms of the Langmuir type. The reaction kinetics reported earlier were used in the model of the adsorptive reactor, which also included axial dispersion, external and internal mass‐transfer resistances, and multicomponent Langmuir isotherms. Model equations were solved by orthogonal collocation on finite elements (OCFE), implemented by the PDECOL package, using the measured model parameters, and were validated by experimental data for reaction and regeneration steps, with good accuracy.