2,4-dinitrophenylhydrazanomethylphenol (DNPHMP) was immobilized onto silicate rice husk ash to form a heterogeneous catalyst denoted as RHDNPH. The elemental and EDX analysis of RHDNPH showed the nitrogen is incorporated into silica. The RHDNPH had 154.6 m2g-1 as a specific surface area. The FT-IR clearly showed the appearance of –NH and C=N absorption band at the expected range. The TGA curve ...

The electrochemical nitrogen reduction reaction (NRR) over single-atom catalysts (SACs) anchored on Mo vacancies of Mo2CO2 MXene nanosheets under ambient conditions suffers from poor selectivity, low yield, and Faradaic efficiency because their sluggish kinetics the competing hydrogen evolution reaction. Herein, density functional theory calculations are performed to improve understanding selec...

A series of reactive binaphthyl-diimine-based dopants is prepared and investigated with respect to their potential for the chiral induction structural coloration in nematic liquid crystal mixture E7 selective photonic sensing nitrogen dioxide (NO2). Studies helical twisting power (HTP) 4-cyano-4′-pentylbiphenyl (5CB) reveal HTP values as high 375 µm-1 tremendous impact compatibility changes dih...

Nitrate (NO3−) reduction in water has been receiving increasing attention treatment due to its carcinogenic and endocrine-disrupting properties. This study employs a novel advanced process, the UV/oxalic acid/ferric iron systems (UV/C2O42−/Fe3+ systems), reducing NO3− high efficiency, excellent selectivity, low cost. The UV/C2O42−/Fe3+ process reduced with pseudo-first-order reaction rate const...

Modifiers provide fast and reliable tuning of separation in differential mobility spectrometry (DMS). DMS selectivity for separating isomeric molecules depends on the clustering modifier concentration, which is typically 1.5–3 mol % ratio isopropanol or ethanol nitrogen. Low concentrations (0.1%) were found to improve resolution sensitivity but at cost practicality robustness. Replacing single-...

with amperometric detection. It has been shown elsewhere that the selectivity of this method is sufficient to separate the potential organic impurities; that is, synthesis byproducts and a specified degradation product from the drug substance (3). The objective of this article is to demonstrate that this method’s suitability for stability testing can be evaluated easily by performing HPLC with ...

In order to enhance the catalytic performance of SAPO-34 catalyst for the reaction of methanol to olefins (MTO), ultrasonic and microwave-assisted aging method were employed in static hydrothermal method to synthesize nano-sized SAPO-34. The effects of the application of this method on the chemical composition, morphology, surface area and total acidity of SAPO-34 were characterized by XRD, FE-...

Cu(II) complex with L-histidine (His) ligand, immobilized within Al-MCM-41, designated as Cu(His)2/Al-MCM-41 was prepared and characterized by powder X-ray diffraction (XRD), nitrogen adsorption desorption, FTIR, UV-Vis and chemical analysis techniques. The surface area and pore volume were found to decrease after immobilization of Cu(II) complex on Al-MCM-41. It was found that Cu(His)2/Al-MCM-...

This proof-of-principle study explored the possibility to form nitrogen-containing organic products via exposure of liquid toluene a flow molecular nitrogen, at room temperature and atmospheric pressure, activated by dielectric barrier discharges. N-containing compounds indeed formed under these conditions, including benzonitrile, high-value chemical that is industrially synthesized from demand...