The influence of transition metals – Fe,Co, Cu on transformation of organic matters from Domanic rocks in hydrothermal catalytic system

Character of conversion of organic matter from Domanic rocks of Pervomaiskoye field (Tatarstan) of Semiluki horizon of upper Devonian deposits in the hydrothermal-catalytic system at temperature of 300?°C in carbon dioxide medium was studied with the application of complex of oil-soluble precursors of catalysts containing Fe, Co, and Cu. In presence of catalysts complex, content of organic extract increases, in which content of hydrocarbon fractions, saturated and aromatic hydrocarbons, increases 1.5 times, while resins content decreases by two times. As result of kerogen destruction in products of experiments, the content of asphaltenes and carbonaceous substances such as carbenes and carboides increase.     

Effect of the regeneration conditions of a cobalt-zeolite catalyst on its properties in the synthesis of hydrocarbons from CO and H<Subscript>2</Subscript>

The effect of the hydrogen regeneration conditions of a 20% Co/Hβ cobalt-zeolite catalyst on its properties in the synthesis of hydrocarbons from CO and H₂ was studied. It was found that regeneration with hydrogen was most effective at 400°C. In this case, the productivity of the catalyst was as high as 305 × 10³ g/m³ Cat/h at a maximum synthesis-gas space velocity (5000 h⁻¹).     

Effect of the nature of the support of a cobalt catalyst on the synthesis of hydrocarbons from CO,H<Subscript>2</Subscript>, and C<Subscript>2</Subscript>H<Subscript>4</Subscript>

The effect of the nature of the support of a Co catalyst on the synthesis of hydrocarbons from CO, H₂, and C₂H₄ was studied in this work. It was found that the introduction of ethylene into synthesis gas resulted in an increase in the yield of liquid hydrocarbons. In this case, the conversion of C₂H₄ was complete and the degree of its involvement into the synthesis of C₅₊ hydrocarbons depended on the concentration of this component in the starting mixture and the nature of the support. Specific features of the adsorption of CO and C₂H₄ on the used Co catalysts were determined using a temperature-programmed desorption method.     

Preparation and etherification reaction of fatty dichlorocyclopropanes

Dichlorocarbene was added tocis-9-octadecene, methyl oleate, methyl elaidate, and methyl linoleate to form the corresponding mono- or bis-dichlorocyclopropanes in yields of 75–88%. The dichlorocyclopropanes underwent ring-opening substitution on heating with alcohols (or water) to form β-chlorallylic ethers (or alcohols). The ethers were obtained in yields of 46 to 84%. Tetraethylene glycol and methyl lactate, as hydroxyl compounds, gave a polyethenoxy ester and an ether-linked diester, respectively. Presented at AOCS meeting, Toronto, October, 1962. F. Utiliz. Res. & Dev. Div. ARS, U.S.D.A.     

Preparation, Structure, and Properties of (Bi,Pb)2Sr2Ca2Cu3O10 + δ Ceramics with Si3N4 Additions

The microstructure, phase composition, texture, and superconducting properties (T _c, T _c, j _c(T), and R(T) at H= 0 and 5 mT) of (Bi,Pb)₂Sr₂Ca₂Cu₃O_{10 +} ceramics (sintering at 840°C for 36 h) with ultrafine Si₃N₄ additions (0.05–0.2 wt %) are studied. The introduction of 0.05–0.1 wt % Si₃N₄ is shown to reduce the width of the superconducting transition by 2–3 K and to raise the critical current density at temperatures below 95 K.     

Electromagnetic Field Formed by Shock Compression of a Conducting Magnetic

The structure of the electromagnetic field in a conducting magnetic compressed in a shock wave is analyzed. It is shown that compression of a magnetic material in an external magnetic field leads to origination of a system of two currents identical in magnitude but opposite in direction. One of them passes ahead of the shock front in the undisturbed substance, and the oppositely directed current passes over the shockcompressed substance. As the shock wave moves further, the absolute value of current monotonically increases. The parameters determining the global electromagnetic pattern in the shockcompressed magnetic are found. These parameters can be considered as the generalization of the governing parameters found previously by the authors for a nonmagnetic conductor. The formulated model offers a qualitative explanation for the results of dynamic experiments with an 80NKhS magnetic soft alloy. The voltage record on the specimen surface indicates effective shockinduced demagnetization of the material.