In order to evaluate the actual pros and cons in the use of new nitroamines for solid rocket applications, the combustion properties of double-base propellants containing nitrogen heterocyclic nitroamines such as RDX, TNAD, HMX and DNP are experimentally investigated by means of high-speed photo...

A range of novel β-nitroacetamides with an alkenyl- or alkynyl tether were synthesized using the deprotonative or conjugate addition nitro-Mannich reaction. They were subjected to radical denitration-cyclisation with a 10 equivalent excess of tributyltin hydride, catalytic AIBN in refluxing ben...

Heterogeneous aza-Henry reactions of aldimes with nitromethane were examined with zeolites as catalysts. Among the zeolite used, H–Y zeolite showed satisfactory catalytic activity for various aldimines, resulting in corresponding β-nitroamines in good yields. H–Y zeolite also showed the excel...

The adsorption of nitroamine (NH2NO2) molecule was investigated on an MgO nanotube (MgONT) using density functional theory in terms of energetic, electronic and geometric properties. It was found that adsorption and dissociation energies of NH2NO2 on the tube are about 20.7–47.7 and 24.9–49.6 ...

We describe a simple and efficient procedure for the preparation of sulfuric acid ([3-(3-silicapropyl)sulfanyl]propyl)ester (3) by the reaction of 3-(thio(propy-3-yl)silica)-propanol (2) and chlorosulfonic acid in chloroform. 3-(Thio(propy-3-yl)silica)-propanol was prepared by the reaction of 3-...

Reaction of 2,2-dichloro-2-(4′-nitrophenyl)acetonitrile with mercury(II) oxide/pyridinium poly (hydrogen fluoride), (aqueous work-up), gave 2,2-difluoro-2-(4′-nitrophenyl)acetamide, from which were made the parent acid and thence its acid chloride. This and ethyl propanedioate/methyl lithium a...

Micron-sized, rhombohedral shaped gallium hybrids with different indole derivatives (indole, 2-methyl-indole, indole-2-carboxylic acid) were successfully synthesized with precipitation method coupled with ultrasound followed by the post-grafting method. The as-synthesized hybrid materials were c...

Nano crystalline NiFe2−xGaxO4, 0.0 ⩽ x ⩽ 1 ferrite was prepared by citrate method. The structural and micro structural evolutions of the nanophase have been studied using X-ray powder diffraction and the Rietveld method. The refinement result showed that the type of the cationic distribution ove...

In order to replace extractant or resin prepared from petrochemical products, a series of carboxyl-functionalized materials based on natural corn stalk (x-IDA-EPI-OCS) were prepared. When the mass ratio of the EPI-OCS and iminodiacetic acid (IDA) was 1:3, the uptake capacity of Ga(III) on the mo...

Using a high-temperature ampoule technique, a series of mixed nickel-iron-gallium metal-rich tellurides with layered structures, Ni3-xFexGaTe2, were prepared and characterized based on X-ray powder diffraction, energy-dispersive spectroscopy, and 57Fe Mössbauer spectroscopy data. These compounds...

Gallium is one such co-product mineral, being used for consumer electronics and contemporary renewable energy applications. China is the top producer of gallium and supplies over 70% of global demand. However, supply uncertainty of primary gallium is increasing due to a shortage of reserves. Thu...

Three new mixed nickel-gallium chalcogenides, Ni6.10GaS2 (I4/mmm, a = 3.5310(5) Å, c = 17.968(4) Å, Z = 2, R1 = 0.014), Ni5.63GaSe2 (I4/mmm, a = 3.5995(3) Å, c = 18.517(3) Å, Z = 2, R1 = 0.018), and Ni8.54Ga2Se2 (I4/mmm, a = 3.5810(5) Å, c = 25.506(5) Å, Z = 2, R1 = 0.028), have been synthesized...

With the aim of tailoring the electrochemical properties of p-type nickel oxide, the logical approach is to dope the material with a p-type acceptor to improve both the conductivity and supercapacitor performance. However, in this work, we incorporated an n-type element into p-type NiO instead. ...

This paper is the first study on the extraction of Cu, Ni, and Ga from Light Emitting Diode (LED) waste by bio-hydrometallurgy technology. LEDs have a high concentration of metals and various types of brominated flame retardants (BFRs). This study demonstrates the need for strains with resistanc...

This study is concerned with a chromatography-based approach (Immobilized Metal Ion Affinity Chromatography) for the recovery of gallium binding peptide sequences from a recombinant phage display library.The here described methods apply the fundamental knowledge and methods of separation science...

A series of N-(2-phenoxy)ethyl imidazo[1,2-a]pyridine-3-carboxamides (IPAs), based on the structure of WZY02 discovered in our lab, were designed and synthesized as new anti-TB agents. Results reveal that many of them exhibit excellent in vitro inhibitory activity with low nanomolar MIC values a...

Molecular structures, hydrocarbon chain packing, in the crystal lattice and their effects on the thermal behaviour of saturated and isomeric zinc(II) undecynoates have been investigated by a variety of physical methods. All the compounds crystallize in a monoclinic crystal system with a being th...

The infrared spectra (of CCl4 solutions) and the Raman spectra (of the neat liquids) of the eight isomeric methyl cis-undecenoates, of methyl undec-10-enoate, and of the nine isomeric methyl undecynoates have been obtained. Conjugation of the double bond with the carbonyl group lowers the wavenu...

N-Trifluoromethylsulfonyl-propiolamides have been prepared by two methods: a) N-triflation of secondary acetylenic carboxanilides, prepared in two steps from terminal alkynes, with triflic anhydride (Tf2O) and b) from terminal alkynes and an aryl or alkyl isocyanate followed by Tf2O in a consecu...

SummaryEffects of tunicamycin on the synthesis of proteins and glycoproteins, especially the surface antigens of a human lymphoblastoid cell line (Raji), were investigated. Electrophoretic profiles of [3H]leucine labeled membrane components were similar in the tunicamycin treated cells and untre...