Wettability is an important factor affecting the performance of catalytic oxidative desulfurization. In order to develop efficient catalyst for extractive coupled desulfurization (ECODS) fuel oil by H2O2 and acetonitrile, a novel family imidazole-based polyoxometalate dicationic ionic liquids (POM-DILs) [Cn(MIM)2]PW12O40 (n = 2, 4, 6) was synthesized modifying phosphotungstic acid (H3PW12O40) w...

In the oil and gas production process, apart from hydrocarbons, a number of impurities are produced, including CO2 sulfur in various concentrations, depending on conditions characteristics reservoir location where is located. To process removal condensate, common technology HDS (Hydrodesulfurization). However, with requirements such as high temperature, pressure, intensive hydrogen consumption,...

The oxidation-extraction desulfurization of Saudi Arabian crudes was conducted with hydrogen peroxide-acetic acid oxidation system. The selection of extractant, the optimization of oxidation-extraction conditions, and the exploration of desulfurization mechanism were studied. As DMF was used as the extractant, the optimal desulfurization rate of 35.11 % and oil recovery of 95 % were obtained at...

A comparative study of ultrasound-assisted extraction (UAE) and hydro-distillation was performed for fast extraction of estragole from tarragon (Artemisia dracunculus L.) dried leaves. Several influential parameters of the UAE procedure in the extraction of estragole (type of solvent, extraction cycles, solvent to material ratio, irradiation time and particle size) were investigated an...

Background/introduction Ultrasound and MRI imaging guiding system for Robotic assisted interventional procedures such as needle biopsy and FUS ablation have to be improved to allow a one stop shop multimodality image guidance. A specific holder which has the capability for connecting the application module of the interventional robotic system “INNOMOTION” (IBSmm, CZ) with SIEMENS wireless ultra...

background: oxidative stress (os) in the follicular environment may affect on oocyte competence and antioxidant vitamins may modify its effects. objective: this study was conducted to examine the effect of dietary intake of vitamin a, c and e on os in follicular environment and assisted reproduction technology (art) outcomes. materials and methods: in this obsevationalprospective study, the int...

A novel AgO/ZnO/HY-zeolite bimetallic nanocatalyst was designed and synthesized by an impregnation method. The purpose of this to remove dibenzothiophene as the primary sulfur content from a model light gasoil in catalytic oxidative desulfurization (ODS) process. characteristics were determined Fourier transform IR spectroscopy, Brunauer-Emmett-Teller analysis, scanning electron microscopy, X-r...

An efficient cold-mechanical/sonic-assisted extraction technique was developed for extraction of genipin from genipap (Genipa americana) peel. Ultrasound assisted extraction (285 W, 24 kHz) was performed at 5, 10 and 15 °C for 5, 10 and 15 min. After cold-extraction, genipin was separated from pectin and proteins by aid of fungal pectinesterase. The maximum yield of non-cross-linked genipin was...