The present work examines the host-guest interactions in H2-THF mixed hydrates in a fused dodeca-hexakaidecahedral cage at the molecular level. The host-guest interaction energies are analyzed to get insight on the occupancies of H2 and THF in different host cages. The maximum and optimum storag...

Hydrate-based carbon dioxide (CO2) capture and hydrogen (H2) purification is a promising technology in clean energy fields. In this work, in order to reveal the effect and mechanism of tetrahydrofuran (THF) on the hydrate-based CO2 separation from Integrated Gasification Combined Cycle (IGCC) sy...

In this work, the effects of temperature and pressure on the methane hydrate formation and dissociation with the presence of 5.56 mol% THF solution in the quiescent condition is investigated. The experiments were conducted at 8 MPa and at 277.2, 283.2, 288.2 and 293.2 K. The results show that th...

This work addresses the partitioning of diuron, a herbicide heavily employed in agriculture, using the aqueous two-phase system formed by tetrahydrofuran and carbohydrates. Phase diagrams using tetrahydrofuran (THF) and six monosaccharides, two disaccharides and three commercial sugars at 298.15...

Despite the potential applications and ubiquity of clathrate hydrates, the molecular mechanism of formation of these compounds remains poorly understood. In the present work, we performed ab initio calculations to investigate the formation of the clathrate cage of the tetrahydrofuran (THF) hydra...

Tetrahydrofuran (THF) is an important chemical which is useful in various applications. THF forms an azeotrope with water which is homogeneous and minimum boiling. Several techniques have been used for breaking this azeotrope including membranes, pressure swing distillation and extractive distil...

Tetrahydrofuran (C4H8O, THF) and its alkylated derivatives of the cyclic ether family are considered to be promising future biofuels. They appear as important intermediates during the low-temperature oxidation of conventional hydrocarbon fuels and of heavy biofuels such as long-chain fatty acid ...

Aminotroponiminatogermylene stabilized ruthenium(II) complexes and reactivity studies on N-heterocyclic germylene stabilized ruthenium(II) complexes were not known. Therefore, this work reports the synthesis of aminotroponiminatogermylene stabilized ruthenium(II) complexes [L1Ge(X){RuCl2(Y)}] (L...

A series of aryl substituted 1-phenyl-2-pyrazolines containing electron-donating and electron-withdrawing substituents on different positions of the C3 or C5-aryl groups were synthesized and their steric and electronic effects on characteristic spectral data were investigated by experimental spe...

Introducing pyrazoline derivatives into the classical 2,2′:6′,2″-terpyridine (2,2′:6′,2″-tpy) backbone leads to the synthesis of a new class of compounds, 4′-pyrazolinyl-2,2′:6′,2″-tpys. Six such derivatives bearing differently substituted pyrazolines have been synthesized with a facil...

Synthesis of chalcones (1,3-diarylprop-2-en-1-ones) and 2-pyrazoline derivatives has been an active field of research due to their established pharmacological effects. In this study, a series of chalcones were prepared with methyl aryl ketones and substituted aldehydes in the presence of sodium ...

Lanthanide pyrrole-2-carboxylates [{Ln(L)3(H2O)2}·H2O]n (Ln = Eu, Gd, Tb) were synthesized and investigated using single crystal X-ray diffraction and optical spectroscopy (luminescence, luminescence excitation and vibrational IR spectra). The europium pyrrole-2-carboxylate crystallizes as a 2D...

A phosphine-catalyzed [3 + 2] annulation of N-aryl fluorinated imines with allenoates is reported. A series of fluorinated pyrrolines is obtained in moderate yield, which are further transformed to fluorinated pyrroles via dehydro-aromatization by DDQ in high to excellent yield. The reaction mec...

A novel ratiometric fluorescence sensor based on fluorescence resonance energy transfer (FRET) between MoS2 QDs and AuNCs was developed for nitrite detection in sausages. The MoS2 QDs-AuNCs nanocomposite exhibited dual emission peaks at 430 nm and 615 nm under 365 nm excitation. With addition of...

To understand the toxic effects of nitrite exposure on crayfish, expression of genes involved in the immune system, the antioxidant defense, and the heat shock protein 70 (HSP70) was measured after 12, 24, and 48 h of different nitrite concentrations exposure in the hepatopancreas and hemocytes ...

Nicotinamide adenine dinucleotide phosphate (NADPH) oxidase and oxidative stress is usually considered as an important factor to the pathogenesis of various diseases. Inorganic nitrite, previously viewed as a harmful substance in our diet or inert metabolites of endogenous NO, is recently identi...

The thermal dissociations of three alkyl nitrites (C3H7ONO, n-C4H9ONO, and i-C4H9ONO) have been studied in a diaphragmless shock tube by laser schlieren densitometry over 700

5-Amino-4-hydroxyiminopyrazoles and (E)-N1-aryl-3-aryl-4-[(substitutedpyrazolyl)diazenyl]pyrazoles derivatives were conveniently synthesized as the corresponding products by reacting 5-aminopyrazoles with ethyl nitrite or sodium nitrite in ∼10% aqueous HCl solution. All of 5-amino-4-hydroxyimin...

By acting as a bioreactor, affording chemical and mechanical conditions for the reaction between dietary components, the stomach may be a source of new bioactive molecules. Using gas chromatography-mass spectrometry we here demonstrate that, under acidic gastric conditions, ethyl nitrite is form...

The purpose of the current study was to ascertain whether ethyl nitrite could be detected in vitro from the reaction of ethanol with peroxynitrite, as well as after administration of ethanol to mice. Ethyl nitrite analyte was determined by using gas chromatography–mass spectrometry with headspa...