Naphthalene (II), quinoline (III), isoquinoline (IV), 6-methylquinoline (V) and 2-methylquinoline (VI) can be hydrogenated selectively to form 1,2,3,4-tetrahydronaphthalene (VII) (100% yield at 22 °C), 1,2,3,4-tetra-hydroquinoline (VIII) (73% yield at 22 °C), 1,2,3,4-tetrahydroisoquinoline (IX...

Pigments and binders are known to influence drying and ageing mechanisms of paint films. However, the study of the long-term mechanical behaviour of paint films and its relationship with paint degradation and conservation still needs further investigation. This paper presents an insight into the...

Magnesium stearate is widely used in the production of dietary supplement and pharmaceutical tablets, capsules and powders as well as many food products, including a variety of confectionery, spices and baking ingredients. Although considered to have a safe toxicity profile, there is no availabl...

Preformed cobalt stearate (CoSt) molecules form a film on the water surface, which with barrier compression shows multilayers of different heights that are evidenced from the structures of the films deposited on hydrophilic silicon (0 0 1) substrates by using a horizontal deposition technique at...

Superhydrophobic cobalt stearate thin films with excellent anti-corrosion properties were successfully fabricated on aluminum substrates via electrodeposition process. The water-repellent properties were attributed to the honeycomb-like micro-nano structure as well as low surface energy of cobal...

Polyurethane foams are disposed of not only at the end of their use but also as scrap during slabstock manufacturing, leading to an environmental and economic problem. Flexible polyurethane foams can be advantageously treated by two-phase glycolysis in order to recover their constituent polyols ...

In this paper, the curing of an unsaturated polyester resin catalysed with methyl ethyl ketone peroxide (MEKP) and cobalt octoate as the promoter, is studied at different heating rates. Given the non-symmetrical shape of differential scanning calorimetry (DSC) curves, it has been assumed that th...

A technically and economically feasible process is developed for the manufacturing of manganese octoate as a powerful paint drier in a pilot plant unit. Such material is an environmentally safe through drier, catalyzes cross linking within the whole coating layer and is highly recommended for bo...

A spinel-type Co-Mn oxide was designed and synthesized through a two-step oxidation-precipitation method at modest temperatures. The Co-Mn oxide was applied as the catalyst in the presence of NaHSO3 under visible light irradiation in order to establish the superiority of heterogeneous photo-chem...

EPR of Mn2+ has been studied in cobalt ammonium sulphate hexahydrate from ≈ 90°K to ≈ 373°K. The spin-hamiltonian analysis is presented. It is concluded that the coordination of water ligands around the divalent ion is almost the same as that in other Tutton salts.

The selective transport of cobalt (II) from ammoniacal solutions containing nickel (II) and cobalt (II) by emulsion liquid membranes (ELMs) using 8-hydroxyquinoline (8-HQ) as extractant has been presented. Membrane solution consists of a diluent (kerosene), a surfactant (ECA 4360J), and an extra...

A polymerizable complex of copper(II) ion with unsaturated quaternary ammonium cation-modified salicylaldoxime ligand was prepared and used to synthesize a novel copper(II) ion imprinted polymers (Cu(II)-IIPs). Elemental analysis (EA), Fourier transform infrared spectroscopy (FTIR), and NMR spec...

Spectra of single crystals of cobalt ammonium sulphate hexahydrate diluted with magnesium ammonium sulphate hexahydrate have been studied as a function of dilution. It has been suggested that the solid dilution lowers the vibrational perturbation and changes the crystal field parameters.

Single crystal of α-nickel sulphate hexahydrate, α-NiSO4. 6H2O (α-NSH) is grown from aqueous solution by slow evaporation method. Solubility and metastable zone width of α-NSH are determined from the aqueous solution. The three dimensional structure is elucidated by single crystal X-ray diff...

An empirical model was developed for the prediction of the absorption efficiency of nitric oxide (NO) into ammoniacal cobalt (II) solution in terms of gas flow rate, liquid flow rate, and temperature. The model parameters were determined experimentally using a spraying tower with initial absorbe...

We have obtained the mixed crystals ammonium nickel-copper sulfate hexahydrate compounds which exhibits 98% transmittance in the ultraviolet region, a promising material for UV light filters and UV sensors for solar-blind technology. These crystals belong to the family of Tutton's salt havi...

Garcinia xanthochymus is a widely used folk medicine in southwestern China. Previous studies indicated it possesses potential anti-diabetic activities both in vitro (Fu et al., 2014; Nguyen et al., 2017) and in vivo (Shivanand et al., 2017). To discover bioactive ingredients from it and unveil t...

Currently used antipsychotics are characterized by multireceptor mode of action. While antagonism of dopamine D2 receptors is responsible for the alleviation of “positive” symptoms of schizophrenia and the effects at other, particularly serotonergic receptors are necessary for their additional...

Molecular self-assembly of aromatic organic molecules based of imidazo[1,2-a]pyridine ring system has been successfully accomplished by regiospecific modulation of substituents such as electron withdrawing (formyl and nitro) and electron releasing (methyl) groups. Interestingly, even a slight st...

Biotransformation of a series of steroid compounds (estradiol, estrone, androst-4-en-3,17-dione, testosterone, canrenone, 16α,17α-epoxyprogesterone and progesterone) with Colletotrichum lini ST-1 as biocatalyst was investigated. With the exception of estradiol, estrone and progesterone, the mi...