Double optical monitoring is applied to determine the influence of main process parameters on the formation of sulfated zirconia and self-assembled mesoporous silica solgel films by dip coating. In addition, we analyze, for the first time to the best of our knowledge, the influence of withdrawal speed, temperature, and relative humidity on refractive-index and physical thickness variations (unc...

Kinetic study of free fatty acids (FFAs) esterification for biodiesel production from palm fatty acid distillate (PFAD) using sulfated zirconia (S-ZrO2) prepared by solvent-free method calcined at low temperature as the heterogeneous catalyst was studied. The reaction was performed in a batch-stirred reactor at the different temperature to obtain the kinetic data. The effect of reaction conditi...

Structural analysis of sulfated oligosaccharides from -carrageenan of up to ten residues (MW 2 kDa) was successfully carried out by positive mode nano-ESI-FTICR-MS together with MS/MS using sustained off-resonance irradiation-collision induced dissociation (SORI-CID). Glycosidic bond cleavage reactions via the Band Y-types of fragmentation were observed and enabled complete sequencing of the ol...

Abstract Micro-mesoporous aluminosilicates based on ZSM-5 zeolite, obtained by a dual template method, as well in the presence of dual-functional (i.e. Gemini-type surfactant), were tested oxidation furfural with hydrogen peroxide. Even substantial changes acidity and porosity catalysts result minor variations selectivity towards desired products. Application synthesized zeolite-based materials...

A hydrothermal method for preparation of nano-size zirconia has been studied to optimize the effective parameters (precursor concentration, temperature and time) using response surface methodology (RSM). The synthesized zirconia samples were characterized through X-ray diffraction (XRD), scanning electron microscope (SEM) and transmission electron microscopy (TEM) analyses to identify mean nano...

Nano-zirconia is commonly used in dentistry as a framework material over which feldspathic porcelain layered to form an aesthetic and strong bi-layered restoration. Sufficient bonding strength between zirconia frameworks veneering porcelains crucial for the longevity of zirconia-based dental restorations. This study aims determine shear bond (SBS) colloidal-processed slip-casted novel nano-zirc...

In the esterification-transesterification method, a catalyst increases reaction rate to produce biofuel (biodiesel). This study investigated use of solid consisting green nano-CaO as support modified by KOH solution and sulfated TiO2 for converting waste frying oil (WFO) into biodiesel in single-step reaction. With prepared from eggshell, nanocomposite CaO/K-sulfated was synthesized physical mi...