In the chemical industry, process intensification is needed to meet important goals such as sustainable and eco-friendly processes. For esterification reaction the “produce more with less pollution” objective can be achieved by coupling reaction and separation in a so called integrated process. In this work a model for describing the esterification reaction of ethyl acetate in pervaporation mem...

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-meth...

A number of SO3H-functionalized solids (biochar, montmorillonites, carbon and halloysite nanotubes) has been studied as catalysts in the cascade Prins-Ritter reaction (-)-isopulegol with benzaldehyde acetonitrile for synthesis octahydro-2H-chromene amides (as 4R- 4S-isomers). high selectivity to these products at 30 °C presence H2O was observed on modified chlorosulfonic acid (CSA) reaching 84%...

Solid acid catalyst plays a crucial role in the petroleum refinery industry and bio-refinery technology. In this work, p-phenolsulfonic (PSA) was successfully grafted onto surface of KH560-modified zirconium phosphate (K-ZrP) facile routine. The structure property organic-inorganic combined solid PSA/K-ZrP-x were characterized via XRD, FTIR, 13C solid-state NMR, TG, N2 adsorption-desorption, SE...

An alternative to 5-hydroxymethyl-2-furfural (HMF), which is a promising furan derivative that can be used as starting material for the preparation of non-petroleum-derived polymeric materials from sugars, 5-acetoxymethyl-2-furfural (AMF). The less-hydrophilic acetyl group AMF has advantages over hydroxy HMF in terms thermal stability and isolation. In previous studies, fructose been along with...

In this study, an approach for the preparation of heterogeneous acid catalysts based on asphaltenes isolated from vacuum residue is proposed. Varying conditions sulfonation made it possible to obtain materials with value 1.16 2.76 meq g−1 and a total sulfur content 6.4 12.3 wt%. The samples obtained were characterized by acid-base titration, nitrogen adsorption, elemental analysis transmission ...