A short and efficient total synthesis of (±)-Dihydroprotolichesterinic acid (1) and Formal synthesis of (±)-Roccellaric acid (2) has been acheived by radical cyclisation of epoxide using a transition metal radical source.

Bimetallic Ni-Cu/SAPO-11 catalysts were prepared by co-impregnation method and assessed in the hydroisomerization of n-octane. Their physicochemical properties were characterized by means of powder X-ray diffraction, nitrogen adsorption-desorption, temperature-programmed desorption of ammonia, p...

Half-sandwich nickel complexes bearing a variety of mesoionic N-heterocyclic carbene ligands (η5-cyclopentadienyl)-iodo-{1-(R)-3-methyl-4-phenyl-1H-1,2,3-triazol-3-ium-5-yl}nickel; where R = phenyl (3a); 2-ethoxy-2-oxoethyl (3b); propyl (3c); benzyl (3d) were synthesized by the reaction of nick...

A series of four NNN-pyridine based ligands of the general form: pyCH2N(R)CH2py {R = propyl, tert-butyl, cyclohexyl and phenyl; py = pyridine} were synthesised and characterised. Complexation of each ligand to CoCl2·6H2O afforded new Co(II) complexes [Co{pyCH2N(R)CH2py}Cl2] (R = C3H7 (1), C(CH3...

Chromium molybdate catalysts with varying Cr/Mo ratios were synthesized by co-precipitation. The catalysts were characterized using XRD, Raman spectroscopy, TPR, BET surface area measurements, ICP-OES and HR-TEM. X-ray diffraction and Raman studies revealed that the dominant phase in the catalys...

The Catalytic Partial Oxidation (CPO) of two octane isomers, 2,2,4-trimethyl pentane (iso-octane) and n-octane, chosen as representative of gasoline is investigated by means of adiabatic tests and mathematical modeling. CPO experiments were carried out in a lab scale auto-thermal reformer with h...

The propensity of a range of monometallic oxide catalysts, namely, TiO2; V2O5; Cr2O3; MnO2; Fe2O3; Co3O4; CuO; ZnO; and CeO2, to form carbon oxides during the oxidative activation of n-octane was investigated. The catalysts showed varied selectivity at iso-conversion. PXRD, BET surface area anal...

The bimetallic NiCu/SAPO-11 catalysts were prepared by co-impregnation, sequential impregnation, co-precipitation, and mechanical mixing methods. Powder X-ray diffraction, nitrogen adsorption-desorption, temperature-programmed desorption of ammonia, transmission electron microscopy, temperature-...

Interfacial properties of water/SDS+1-butanol/n-octane and water/SDS+2-butanol/n-octane systems have been determined using MD simulations with the aim of studying the molecular interactions between alcohols and SDS when are located at the water/n-octane interface. Also, interfacial properties of...

Ignition delay times (IDT) of n-heptane, iso-octane, n-dodecane, and iso-octane/n-dodecane blends, in stoichiometric mixtures with air, were measured behind reflected shock waves in a heated, high-pressure shock tube. Measurements were taken at temperatures of 665–1250 K, pressures of 28–70 at...

The perfluorinated products from the electrochemical fluorination of octanoyl chloride were analyzed using several techniques. Capillary gas chromatography was used for quantitative analysis of the desired product, perfluorooctanoyl fluoride, and for perfluorinated cyclic ether by-products. Isop...

The electrochemical fluorination of octanoyl chloride to produce perfluorooctanoyl fluoride in anhydrous hydrogen fluoride was investigated. The study was carried out in a microprocessor-aided modified Simons reactor system using a Cu/CuF2 reference electrode. The formation of polymeric tar at t...

This study is a continuation of previous work done in this laboratory which has demonstrated the possibility of polymerizing multilayers of vinyl stearate to a controlled extent; thus, paving the way for the preparation of thin polymeric films.In the present work, the formation of mixed multilay...

Basic zinc cyanurate (Zn3(C3N3O3)2·ZnO, represented as Zn3Cy2) was synthesized via a precipitation method, and investigated as a thermal stabilizer for poly(vinyl chloride) (PVC) by thermogravimetric analysis (TGA), Congo red test and discoloration test. The thermal stability of PVC was signifi...

Oriented monolayers of vinyl stearate were photolytically polymerized with uv radiation at the air-water and nitrogen-water interfaces. Experiments were conducted on a film balance. Measurements of surface pressure, surface potential, relative surface viscosity, and infrared internal reflectance...

The development of Langmuir-Blodgett films for applications generally exploits either organization or orientation or both in these extremely thin films. The final organization of built-up monolayers may be influenced appreciably by the choice of film deposition conditions. In this report we docu...

In the future reactors, the pellets radioactivity will increase due to the modification of the plutonium concentration. The stability of the organic additive used as lubricating/deagglomerating agent has thus to be evaluated. Up to now, zinc stearate is employed, but new additives are tested in ...

The stabilization effect of calcium and zinc stearates (CaSt2/ZnSt2) combined with pentaerythritol (PeE) and organic tin on poly(vinyl chloride) was investigated. The results show that the addition of calcium/zinc stearates combined with PeE and organic tin can improve thermal and colour stabili...

The influence of soy protein isolate (SPI) and its mixture with calcium stearate (CaSt2), and zinc stearate (ZnSt2) with various ratios on the processing thermal stability of poly (vinyl chloride) (PVC) was investigated by measuring dehydrochlorination rate of PVC (DHC), visual color comparison,...

A marked gradient in surface pressure develops in monolayers of poly(vinyl sterate) (PVS) during compression. The gradient varies with position along the trough: it is large in the region close to the compression barrier and also near the other end of the trough, but relatively small at intermed...