Kinetic modeling of liquid phase catalytic alkylation of guaiacol with cyclohexene

The kinetics of the liquid-phase alkylation guaiacol (G) with cyclohexene (CH) over Amberlyst 36 resin was studied using Langmuir–Hinshelwood–Hougen–Watson (LHHW) heterogeneous kinetic models. Catalytic tests were performed in a batch reactor, solvent-less conditions, at 363 K, 1 bar, 600 RPM, G:CH molar ratio equal to 5 total volume 30 ml and 1.5 g solid catalyst. G CH formed cyclohexyl-2-methoxyphenylether (CHMPE) by O-alkylation cyclohexyl-2-methoxyphenol isomers (CHMP) C-alkylation. Furthermore, CHMPE isomerizated into CHMP. A negligible amount cyclohexylcyclohexene (CHC) observed dimerization CH. Among these products, CHMP are important intermediaries for production resins, antioxidants, drugs, polymeric additives, agrochemicals, etc. Several LHHW models, varying rate limiting step reactions, proposed order elucidate reaction mechanism. fitting experimental data consecutively by: (1) stochastic optimization method (2) nonlinear regression, Levenberg–Marquardt algorithm, reducing probability reaching local minima objective function. selected model considers that: (a) both C-alkylation is surface chemical between adsorbed CH; (b) adsorption O-alkylated products isomerization C-alkylated products. Finally, this that fits appreciably well from physical statistical point view, suggests adsorbs stronger than