The exploration of highly efficient catalysts based on nano-sized Ti-rich titanosilicate zeolites with controllable active titanium species is great importance in zeolite catalytic reactions. Herein, we reported an and facile synthesis TS-1 (MFI) by replacing tetrabutyl orthotitanate (TBOT) tetramer (TBOT-tetramer) as the source. introduced TBOT-tetramer slowed down crystallization process, acc...

The stereochemistry of the desulfurization products of chiral natural and synthetic 3,6-epidithiodiketopiperazines (ETPs) is specified inconsistently in the literature. Qualitative mechanisms have been put forward to explain apparently divergent stereochemical pathways, but the quantitative feasibility of such mechanistic pathways has not been assessed. We report a computational study revealing...

Several organosulfur compounds are present in the crude oil, and are required to be removed before its processing into transport fuel. For this reason, biodesulfurization of thiophenic compounds has been studied extensively. However, studies on the sulfide compounds are scarce. In this paper, we describe desulfurization of a model sulfidic compound, dibenzyl sulfide (DBS) by an isolated Gordoni...

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...

Oxide dispersion strengthened (ODS) steels with different contents of zirconium (denoted as 16Cr ODS, 16Cr-0.3Zr ODS and 16Cr-0.6Zr ODS) were fabricated to investigate the effects of Zr on strengthening mechanism of Al-alloyed 16Cr ODS steel. Electron backscatter diffraction (EBSD) results show that the mean grain size of ODS steels could be decreased by Zr addition. Transmission electron micro...