The extensive research activity on sol-gel processing of silica glass has been reviewed by several authors [l-4]. The typical alkoxide route to silica sols comprises the catalyzed reaction of tetraethoxysilane (TEOS) and water in a mutual solvent. The TEOS alkoxy groups hydrolyze to form silanol monomers which condense and crosslink to form the silica gel network. The nature of the sol and the ...

Decanoic acid reverse micelle-based coacervates were used to provide simple, rapid and almost solventless extraction of bisphenol A (BPA) from canned fatty foods. The procedure involved the extraction of 200-400 mg of homogenised food sample with an aqueous solution containing 20% THF and 200 mg of decanoic acid, conditions under which the coacervate (around 550 microl) formed in situ and insta...

Sample preparation is an essential step in analysis, greatly influencing the reliability and accuracy of resulted the time and cost of analysis. Solid-Phase Microextraction (SPME) is a very simple and efficient, solventless sample preparation method, invented by Pawliszyn in 1989. SPME has been widely used in different fields of analytical chemistry since its first applications to environmental...

Mesoporous zirconium-silicates have been prepared using two different methodologies, evaporation-induced self-assembly and solventless organometallic precursor dry impregnation of commercial SiO2. The samples were characterized by elemental analysis, XRD, N2 adsorption, TEM, DRS UV–vis Raman spectroscopic techniques. catalytic performance the Zr-Si catalysts was assessed in epoxidation three re...

Byproducts derived from the food industry are an interesting biomass to valorize as they cheap source, their generation does not compete with and feed production, utilization solves waste disposal issue. In this work, we focused on production of a series polyesters using cardanol-derived diol produced inedible shell cashew nuts. The synthesized polymers 100% biobased since diacid components str...

As a way to valorise glycerol, the main by-product of biodiesel, this study is focused on production esters p-methoxycinnamic acid and glycerol. These can replace hazardous octylmethoxycinnamate in cosmetic industry, which thought act as an endocrine disruptor interfere with thyroid function. Several sulfonated mesoporous catalysts, without endcapping, were easily synthetized using several alco...

The surface coating industry is rapidly changing to meet environmental and economic pressures. Some of the changes include new formulations which meet environmental regulations, higher performance finishes with improved properties, continued development of solventless technologies such as powder coatings and radiation curable coatings, and new application methods with improved transfer efficien...