Beschreibung:    The enzymatic hydrolysis of urea contained in an oil-displacing composition by the action of plant urease has been studied. Optimal ratios of urea to natural urease-containing sources have been determined for the intense hydrolysis accompanied by the release of CO 2 , which reduces the viscosity of crude oil, and ammonia, which forms an alkaline buffer system, thereby increasing the detergent properties of the composition. The effect of hydrolysis products on the rheological characteristics of heavy crude from the Usa oil-field has been examined. The recovery of viscous crude oil from a model reservoir using the oil-displacing composition and urease has been investigated. Content Type Journal Article Pages 441-446 DOI 10.1134/S0965544112060023 Authors L. K. Altunina, Institute of Petroleum Chemistry, Russian Academy of Sciences, Siberian Branch, Tomsk, Russia L. I. Svarovskaya, Institute of Petroleum Chemistry, Russian Academy of Sciences, Siberian Branch, Tomsk, Russia Journal Petroleum Chemistry Online ISSN 1555-6239 Print ISSN 0965-5441 Journal Volume Volume 52 Journal Issue Volume 52, Number 6

Beschreibung:    The conversion of an ethylene-pentane mixture over HZSM-5 zeolite (Si/Al = 35) modified with molybdenum and boron has been studied. The texture, dispersion, and structure of the catalyst have been determined by instrumental methods. The modification with molybdenum leads to an increase in both the activity of the catalyst in the conversion of the ethylene-pentane mixture and the yield of C 5 –C 9 isoparaffins and aromatic hydrocarbons with high octane numbers. The ratio of isoparaffins and aromatic hydrocarbons in the products on the catalyst that contains molybdenum and boron depends upon the reaction conditions. Content Type Journal Article Pages 410-415 DOI 10.1134/S096554411206014X Authors G. D. Zakumbaeva, Sokolskii Institute of Organic Catalysis and Electrochemistry, Almaty, Republic of Kazakhstan A. Zh. Kubasheva, Sokolskii Institute of Organic Catalysis and Electrochemistry, Almaty, Republic of Kazakhstan L. V. Komashko, Sokolskii Institute of Organic Catalysis and Electrochemistry, Almaty, Republic of Kazakhstan I. S. Chanysheva, Sokolskii Institute of Organic Catalysis and Electrochemistry, Almaty, Republic of Kazakhstan B. Tuktin, Sokolskii Institute of Organic Catalysis and Electrochemistry, Almaty, Republic of Kazakhstan Journal Petroleum Chemistry Online ISSN 1555-6239 Print ISSN 0965-5441 Journal Volume Volume 52 Journal Issue Volume 52, Number 6

Beschreibung:    The kinetics of the dimerization of α-methylstyrene in the presence of high-silica zeolite HNaY has been studied, and a nine-stage scheme of the monomer conversion has been developed. Analysis of the kinetic models developed in the form of the Langmuir-Hinshelwood relationships and in terms of the mass action law has shown that the first model more adequately describes the experimental data. The numerical values of kinetic and adsorption parameters are represented. Content Type Journal Article Pages 426-431 DOI 10.1134/S0965544112060047 Authors A. V. Balaev, Institute of Petroleum Chemistry and Catalysis, Russian Academy of Sciences, Ufa, Russia N. F. Grigor’eva, Institute of Petroleum Chemistry and Catalysis, Russian Academy of Sciences, Ufa, Russia A. N. Khazipova, Institute of Petroleum Chemistry and Catalysis, Russian Academy of Sciences, Ufa, Russia B. I. Kutepov, Institute of Petroleum Chemistry and Catalysis, Russian Academy of Sciences, Ufa, Russia U. M. Dzhemilev, Institute of Petroleum Chemistry and Catalysis, Russian Academy of Sciences, Ufa, Russia Journal Petroleum Chemistry Online ISSN 1555-6239 Print ISSN 0965-5441 Journal Volume Volume 52 Journal Issue Volume 52, Number 6

Beschreibung:    Volatile products of the two-step (400, 650°C) flash pyrolysis of Ivanovskoe asphaltite from Oren-burg oblast, its asphaltenes, oils, and benzene and benzene-ethanol resins have been characterized by gas chromatography-mass spectrometry ( GCMS ) in the on-line mode. The “unresolvable complex mixture” of nonidentifiable compounds prevails at both temperatures. The compositions of identified compounds in the products obtained at 400 and 650°C substantially differ, especially, for resins and asphaltenes. At 650°C, the products for all the samples are characterized by the same set of compounds including homologues of alkanes; α-olefins; cyclohexanes; pregnanes and steranes, cheilanthanes and hopanes; hopenes; mono-, bi-, and tricyclic aromatic hydrocarbons; and benzo- and dibenzothiophenes. This finding confirms that most of these compounds occur in the “bound” form as structural units of molecules of resinous-asphaltenic components of the natural asphaltite. Content Type Journal Article Pages 373-382 DOI 10.1134/S0965544112060035 Authors V. R. Antipenko, Institute of Petroleum Chemistry, Siberian Branch, Russian Academy of Sciences, Tomsk, Russia V. N. Melenevskii, Trofimuk Institute of Petroleum Geology and Geophysics, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia Journal Petroleum Chemistry Online ISSN 1555-6239 Print ISSN 0965-5441 Journal Volume Volume 52 Journal Issue Volume 52, Number 6

Beschreibung:    A new type of high-performance capillary columns for gas chromatography, monolithic capillary columns, have been studied, which are characterized by a high loading capacity, a high efficiency, and good deactivation of the capillary wall as early as the step of preparing a monolithic stationary phase. The feasibility of separation of both gaseous and liquid samples at a high carrier-gas pressure has been shown. The influence of temperature programming on the separation properties of the monolithic columns has been examined, and it has been shown that temperature programming on monolithic columns is a convenient and effective means of accelerating gas chromatographic determination of compounds of many classes. Content Type Journal Article Pages 437-440 DOI 10.1134/S0965544112060084 Authors A. A. Korolev, Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, Moscow, Russia V. E. Shiryaeva, Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, Moscow, Russia M. E. Dianov, Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, Moscow, Russia T. P. Popova, Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, Moscow, Russia A. A. Kurganov, Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, Moscow, Russia Journal Petroleum Chemistry Online ISSN 1555-6239 Print ISSN 0965-5441 Journal Volume Volume 52 Journal Issue Volume 52, Number 6

Beschreibung:    The routes of transformation of vegetable oils under catalytic cracking conditions have been investigated. The influence of the component composition of the catalyst on distribution of the desired cracking products and their chemical group composition has been revealed. It has been shown that introduction of H-ZSM-5 zeolite into the composition of the oil cracking catalyst promotes the formation of C 2 -C 4 light olefins—the yield of propylene and butylene mainly increases. During cracking on bizeolites catalysts, high yields of both gasoline fractions and light olefins are observed. The relationship between the unsaturation index of the vegetable oils and the product distribution during their catalytic cracking has been established. Oils with a high index of unsaturation are cracked on the bizeolite catalyst yielding primarily mono- and polyaromatic hydrocarbons. Content Type Journal Article Pages 392-400 DOI 10.1134/S0965544112060059 Authors V. P. Doronin, Institute of Hydrocarbon Processing, Siberian Branch, Russian Academy of Sciences, ul. Neftezavodskaya 54, Omsk, Russia O. V. Potapenko, Institute of Hydrocarbon Processing, Siberian Branch, Russian Academy of Sciences, ul. Neftezavodskaya 54, Omsk, Russia P. V. Lipin, Institute of Hydrocarbon Processing, Siberian Branch, Russian Academy of Sciences, ul. Neftezavodskaya 54, Omsk, Russia T. P. Sorokina, Institute of Hydrocarbon Processing, Siberian Branch, Russian Academy of Sciences, ul. Neftezavodskaya 54, Omsk, Russia L. A. Buluchevskaya, Institute of Hydrocarbon Processing, Siberian Branch, Russian Academy of Sciences, ul. Neftezavodskaya 54, Omsk, Russia Journal Petroleum Chemistry Online ISSN 1555-6239 Print ISSN 0965-5441 Journal Volume Volume 52 Journal Issue Volume 52, Number 6

Beschreibung:    The catalytic activity of the Pd(PPh 3 ) 4 -TsOH and Pd(PPh 3 ) 4 -PPh 3 -TsOH systems in the reaction of isobutylene hydromenthoxycarbonylation with carbon monoxide and l -menthol has been examined. It has been found that the reaction proceeds regioselectively yielding the linear product l -menthyl isovalerate. Optimal conditions have been found for running the process. The spatial structure of l -menthyl isovalerate synthesized via the isobutylene hydromenthoxycarbonylation reaction has been established by 1 H and 13 C NMR techniques. Content Type Journal Article Pages 422-425 DOI 10.1134/S0965544112060126 Authors Kh. A. Suerbaev, Al-Farabi Kazakh National University, ul. Al-Farabi 71, Almaty, Kazakhstan E. G. Chepaikin, Institute of Structural Macrokinetics and Materials Science, Russian Academy of Sciences, Chernogolovka, Russia G. Zh. Zhaksylykova, Al-Farabi Kazakh National University, ul. Al-Farabi 71, Almaty, Kazakhstan Journal Petroleum Chemistry Online ISSN 1555-6239 Print ISSN 0965-5441 Journal Volume Volume 52 Journal Issue Volume 52, Number 6

Beschreibung:    O -Alkylation of pyrocatechol with 4-chloromethyl-1,3-dioxolane has been investigated. The ether formation selectivity is largely determined by the structure of the reactants and the conditions of the process. The inhibiting effect of the synthesized ortho-substituted phenols has been examined in the model system of radical chain oxidation of 1,4-dioxane. Content Type Journal Article Pages 432-436 DOI 10.1134/S096554411205012X Authors S. A. Timofeeva, Ufa State Academy of Economics and Service, Ufa, Russia L. R. Yakupova, Institute of Organic Chemistry, Russian Academy of Sciences, Ufa Scientific Center, Ufa, Russia R. L. Safiullin, Institute of Organic Chemistry, Russian Academy of Sciences, Ufa Scientific Center, Ufa, Russia S. S. Zlotskii, Ufa State Oil Technical University, Ufa, Russia Journal Petroleum Chemistry Online ISSN 1555-6239 Print ISSN 0965-5441 Journal Volume Volume 52 Journal Issue Volume 52, Number 6

Beschreibung:    The present study exports a regression equation which describes the variation of humidity and reduction conductivity of JP8 (F34) with time. A hydrophilic polymer is used to eliminate humidity from JP8 and the regression analysis shows that the maximum decrease of humidity in an hour it is of about ∼39% and conductivity’s in two hours it is of about ∼36% respectively. The elimination of humidity makes the fuel suitable for car machines and gives combustion with less pollution for the environment. Thus, the quality of the fuel as well as its combustion efficiency can be improved while the reduction of water concentration enhances the secure of the combustion machine’s operation. Content Type Journal Article Pages 447-451 DOI 10.1134/S0965544112060138 Authors C. G. Tsanaktsidis, Laboratory of Qualitative Fuel Control Department of Pollution Control and Technologies, Technological Education Institute of Western Macedonia, Kila, Kozani, 50100 Greece S. G. Christidis, Laboratory of Qualitative Fuel Control Department of Pollution Control and Technologies, Technological Education Institute of Western Macedonia, Kila, Kozani, 50100 Greece N. Sariannidis, Department of Financial Applications, Technological Education Institute of Western Macedonia, Kila, Kozani, 50100 Greece A. Itziou, Department of Genetics, Development and Molecular Biology, School of Biology, Aristotle University of Thessaloniki, Thessaloniki, 54124 Greece Journal Petroleum Chemistry Online ISSN 1555-6239 Print ISSN 0965-5441 Journal Volume Volume 52 Journal Issue Volume 52, Number 6

Beschreibung:    Assignment of 13 C NMR signals of compounds with ethyl, n -propyl, n -butyl, n -amyl, and n -C 6+ alkyl substituents in different positions of carbon chains in the spectra of saturated hydrocarbon fractions of crude oils and in the spectra of crude oils, taking into account the dependence of chemical shifts on the recording temperature, the concentration of the test solution. and the composition of the object of study, has been proposed. The capabilities of the 13 C NMR technique as applied to determination of this almost unexplored group of hydrocarbons in crude oils have been discussed. Content Type Journal Article Pages 383-391 DOI 10.1134/S0965544112060114 Authors M. B. Smirnov, Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, Leninskii pr. 29, Moscow, Russia N. A. Vanyukova, Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, Leninskii pr. 29, Moscow, Russia Journal Petroleum Chemistry Online ISSN 1555-6239 Print ISSN 0965-5441 Journal Volume Volume 52 Journal Issue Volume 52, Number 6