This study reports the immobilization of Candida Rugosa lipase (CRL) onto nanocellulose (NC) extracted from almond shells using p-toluenesulfonic acid (PTSA) and sulfuric (ASS) with sugar-based natural deep eutectic solvent (NADES1a) as a biocatalyst system. The properties both immobilized lipases were studied compared to free enzyme counterpart. Under optimized conditions (2 h, 40 ºC pH 7.0), ...

supercritical carbon dioxide (sc-co2) was used as solvent to synthesize oleyl oleate as an analog of jojoba oil from oleic acid and oleyl alcohol with high conversion (100%) of the acid into ester in a short time of 100 min. utilizing a low cost solid catalyst, p-toluenesulfonic acid monohydrate (ptsa), the esterification reaction was performed, without any prior preparation step, in a flow mod...

Colorimetric gas sensing is demonstrated by thin films based on ultrasmall TiO2 nanoparticles (NPs) on Si substrates. The NPs are bound into the film by p-toluenesulfonic acid (PTSA) and the film is made to absorb volatile organic compounds (VOCs). Since the color of the sensing element depends on the interference of reflected light from the surface of the film and from the film/silicon substra...

5-Hydroxymethylfurfural (HMF) is one of the promising chemicals, which can serve as a platform chemical to produce various energy chemicals. HMF be produced from different lignocellulosic biomass derived sugars employing catalytic processes. In this study, synthesis was investigated excessively available sucrose using environment friendly and cost-effective technology. Among solvents applied, d...

The synthesis of a biobased aliphatic polyester, poly (hexamethylene sebacate) (PE 6-10) via esterification and alcoholysis reaction steps by reactive extrusion is reported. overall time was decreased down to around 14 min instead roughly 360 in classical batch reactor. A number average molar mass 21,100 g.mol?1 has been reached. operating conditions were first optimized through reactors synthe...

Obtaining modified electrodes is a response of electrochemistry to continuous development in areas such as technology, electronics, medicine, biology and many others. Modifying layers allow scientists to build electrodes with required properties such as for example: selectivity, stability, precision, durability, range of potentials etc. The aim of the studies was to modify the surface of gold a...

A novel encapsulated deep eutectic solvent (DES) was introduced for biodiesel production via a two-step process. The DES in medical capsules and were used to reduce the free fatty acid (FFA) content of acidic crude palm oil (ACPO) minimum acceptable level (< 1%). synthesized from methyltriphenylphosphonium bromide (MTPB) p-toluenesulfonic (PTSA). effects pertaining different operating condition...

Single step pretreatment-saccharification of corn stover was investigated in aqueous p-toluenesulfonic and sulfuric acid media. Dilute aqueous solution of p-toluenesulfonic acid was a better catalyst than aqueous sulfuric acid of the same H(+) ion concentration for single step pretreatment-saccharification of corn stover at moderate temperatures and pressures. For example, 100mg corn stover hea...