The biobased renewable monomer 2,5-diformylfuran is polymerised using various N-heterocyclic carbene (NHC) catalysts in dimethyl sulfoxide (DMSO) affording a low molar mass polymer. It shown that catalyst structure as well the temperature and time polymerization running have noticeable effect on its mass. obtained material characterized by nuclear magnetic resonance (NMR), thermogravimetric ana...

Several sulfonated polymers, which are typical Brønsted acid catalysts, have been employed in the production of two biofuels: 5-ethoxymethylfurfural (EMF) and ethyl levulinate (EL) as main byproduct, catalytic results attributed to their different chemical morphological properties. The Purolite CT275DR attained best from 5-hydroxymethylfurfural (HMF) with a 63% EMF yield after 16 h at 100 °C th...

There is still considerable controversy surrounding the mechanisms, thermodynamics, and kinetics of heavy oil aquathermolysis pyrolysis processes. The present paper aims to widen our knowledge about effect iron tallates on Cuban oil. obtained SARA (S: saturates, A: aromatics, R: resins, asphaltenes) analysis has shown a significant increase in light hydrocarbon content during aquathermolysis. M...

Sand molding has the advantage of being able to cast metals with high melting points, such as steel and nickel. for mold media generally uses a lot silica sand. Some sand molds contain alphaset binders well other binders. Alphaset is technique making metal casting cores that use resin binder catalyst between sands. The addition mixture resin. process specimens test using SiO 2 weight 1000 g 2.1...

A sulfonated graphene catalyst was designed and tested in the acetylation of glycerol. The synthesized using graphite as starting material comprised three stages, which included: (i) synthesis oxide by means a modified Hummers method, (ii) reduction with ascorbic acid, (iii) functionalization sulfanilic acid situ diazotization. Structural, morphological chemical properties were characterized SE...