Production of biodiesel from waste cooking oil using MgMoO₄-supported TiO₂ as a heterogeneous catalyst

<p>Energy importers globally are gradually increasing. The maximum demand is for energy sources, especially for crude products. Biodiesel is eco-friendly and it is derived from vegetable oil, animal fat, waste cooking oil, and nonedible oil. In this study, waste cooking oil was used to make biodiesel with the help of a heterogeneous catalyst. Titanium dioxide doped with magnesium molybdate was used as a heterogeneous catalyst to make biodiesel by the alcohol mixture using the ultrasonication technique at 610^°C for 4 h. The catalysts were characterized by X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), Thermogravimetric analysis (TGA), and Energy-dispersive X-ray spectroscopy (EDAX) analysis.</p

Extraction of non-edible oil from <i>Catharanthus roseus</i> seeds and kinetics on oil extraction

<p>Today most of the countries in the world are the importers of energies. The largest demand occurred in the energy system, especially for petroleum and its products. Biodiesel is an environmentally friendly, renewable source, non-toxic and biodegradable matter. It contains monoalkyl esters of long chain fatty matters, and it is collected from vegetable oil, animal fats, algae, and non-edible oils. In this work, bio oil was extracted from <i>Catharanthus roseus</i> seed using Soxhlet apparatus. During the study of extraction, a better yield of bio oil 31.50% was obtained from a polar solvent like Methanol at 65°C, with the time of 3 h. The fuel parameters such as flash and fire point, cloud and pour point, and carbon residue 0.1% were studied. The parameters of physico-chemical properties and fuel properties are analyzed by AOCS and ASTM standard methods.</p

Self-Assembly of Selenium-Bridged Rhenium(I)-Based Metalla Rectangles: Synthesis, Characterization, and Molecular Recognition Studies

Self-assembly of the selenium-bridged novel metallacyclophanes [{(CO)₃Re­(μ-SeR)₂Re­(CO)₃}₂(μ-L)₂] (<b>1</b>–<b>3</b>) has been accomplished by treating diaryl diselenide with low-valent transition-metal carbonyl and rigid bidentate azine ligands under one-pot reaction conditions. The oxidative addition of diphenyl/dibenzyl diselenides to Re₂(CO)₁₀ with 4,4′-bipyridine, <i>trans</i>-1,2-bis­(4-pyridyl)­ethylene, and 1,4-bis­[2-(4-pyridyl)­ethenyl]­benzene afforded tetranuclear metallacyclophanes. These compounds have been characterized by elemental analysis and IR, NMR, and UV–vis absorption spectroscopic techniques. The molecular structures of metallacylophanes <b>1a</b>,<b>b</b> and <b>2</b> were determined by single-crystal X-ray diffraction methods, and the crystal structures showed that two selenium-bridged dirhenium metallacycles were linked by two bipyridyl spacers and attained a framework of molecular rectangles. In addition, the molecular recognition capabilities of the molecular rectangles <b>1a</b>,<b>b</b> and <b>2</b> with aromatic compounds such as pyrene and triphenylene have been investigated by studying their binding properties, using UV–visible absorption and fluorescence emission spectrophotometric methods. The nature of the binding interactions were further supported by single-crystal X-ray diffraction methods, and the crystal structures of <b>1</b><b>b</b>·(pyrene) and <b>1</b><b>b</b>·(triphenylene) revealed that CH···π interactions are mainly responsible for the binding of <b>1b</b> with pyrene and triphenylene

Identification of potent chromone embedded [1,2,3]-triazoles as novel antitubercular agents

Supplementary data of compounds including characterization, bioactivity and computational studies of compound