N. I. MATSKEVICH1, V. D. BOBKO1, O. I. ANUFRIEVA1 AND TH. WOLF2 1Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences, Pr. Akademika Lavrentyeva 3, Novosibirsk 630090 (Russia) E-mail: nata@che.nsc.ru 2Institute of Solid State Physics, Karlsruhe Research Center, Postfach 3640, D-76021, Karlsruhe (Germany)
Pages: 443-447
I. V. PROZOROVA, O. V. SEREBRENNIKOVA, YU. V. LOSKUTOVA, N. V. YUDINA, L. D. STAKHINA AND T. L. NIKOLAEVA
Institute of Petroleum Chemistry, Siberian Branch of the Russian Academy of Sciences, Pr. Akademicheskiy 3, Tomsk 634021 (Russia) E-mail: piv@ipc.tsc.ru
Pages: 449-453
Petroleum samples from two holes of the Verkhne-Salatskoye deposit (the holes Nos. 118 and 122) have been studied. It has been found that they differ essentially both in their content of pitchy and aromatic components and in the composition of paraffin-naphthene hydrocarbons, which defines the features of their deposit formation. Accordingly, the process of sludge formation for a petroleum sample from the hole No. 122 that is characterized by a higher than usual content of pitchy components starts at a temperature of 50 oC. The process of deposit formation for a petroleum sample from the hole No. 118 occurs at 70 oC. A decrease in the temperature of a petroleum flow leads to the predominantly dendritic type crystallization of paraffin hydrocarbons and to an increase in the structural amorphism of the petroleum deposit.
S. S. SANZHANOVA1, E. L. ZONKHOEVA1, E. V. MANGUSTOVA2 AND S. D. ZHAMSARANOVA2 1Institute of Geology, Siberian Branch of the Russian Academy of Sciences, Ul. Sakhyanovoy 6a, Ulan Ude 670047 (Russia) E-mail: elis@geo.buryatia.ru 2East-Siberian State Technological University, Ul. Klyuchevskaya 40v, Ulan Ude 670047 (Russia) E-mail: biochim@esstu.ru
Pages: 455-459
Sorption of selenium (IV) ions from the solutions of sodium selenite on natural zeolite-containing tuff from the Kholinskoye deposit (Transbaikalia) and on the tuff form modified with protein hydrolysate is investigated. Optimal conditions for tuff modification with protein hydrolysate are chosen. The zone of the safe action of selenium-containing tuff is determined using the test culture Tetrachimena pyriformis.
V. A. SEROV, O. S. BROVKO AND I. A. PALAMARCHUK
Institute of Ecological Problems in the North, Ural Branch of the Russian Academy of Sciences, Nab. Severnoy Dviny 23, Arkhangelsk 163061 (Russia)
A. S UTEGENOVA AND Z. G. AKKULOVA
Institute of Organic Synthesis and Coal Chemistry, National Academy of Sciences of Republic Kazakhstan, Ul. Alikhanova 1, Karaganda 470061 (Kazakhstan) E-mail: akkul@inbox.ru
Pages: 467-471
A potentiality has been disclosed to obtain new types of natural/synthetic polymers with the use of the radical grafting method on the basis of humic acids (HA) that have been extracted from wastage of coal mining. Conditions for obtaining graft copolymers of HA with vinyl monomers are described. An assumption has been made about the inhibiting effect of radical centres in aromatic system of HA on processes of the inoculation of vinyl monomers to them. It has been demonstrated that modification of HA and coal matter by polymers makes it possible to enrich their functional composition with new oxygen-containing functional groups. It has been found that cation-exchange capacity of the received coal and humic copolymers increases with an increased number of acid groups in their composition and with the ionisation degree in a series from coal to its copolymers and from HA to their modified forms. The sorption exchange capacity of the new derivates that has been investigated in relation to ions of sodium, copper, and nickel is 1.1
L. N. ROGOZA, N. F. SALAKHUTDINOV AND G. A. TOLSTIKOV
Vorozhtsov Institute of Organic Chemistry, Siberian Branch of the Russian Academy of Sciences, Pr. Akademika Lavrentyeva 9, Novosibirsk 630090 (Russia) E-mail: rogoza@nioch.nsc.ru; anvar@nioch.nsc.ru
Pages: 471-497
S. S. LAEV1, V. V. FOMENKO1, T. M. YURIEVA2, T. P. MINYUKOVA2 AND N. F. SALAKHUTDINOV1 1Vorozhtsov Institute of Organic Chemistry, Siberian Branch of the Russian Academy of Sciences, Pr. Akademika Lavrentyeva 9, Novosibirsk 630090 (Russia) E-mail: anvar@nioch.nsc.ru 2Boreskov Institute of Catalysis, Siberian Branch of the Russian Academy of Sciences, Pr. Akademika Lavrentyeva 5, Novosibirsk 630090 (Russia)
Pages: 499-504
M. N. NOVOKRESHCHENOVA AND YU. M. YUKHIN
Institute of Solid State Chemistry and Mechanochemistry, Siberian Branch of the Russian Academy of Sciences, Ul. Kutateladze 18, Novosibirsk 630128 (Russia) E-mail: Yukhin@solid.nsc.ru
Pages: 505-509
The interaction of oxohydroxo bismuth (III) nitrate trihydrate with ammonium bromide solutions is investigated by means of X-ray phase analysis, thermogravimetry, electron microscopy, IR spectroscopy and chemical analysis. The reasonableness of obtaining high-purity bismuth (III) oxobromide of the composition BiOBr from metal bismuth after its preliminary oxidation with the oxygen of the air is demonstrated. Thus formed bismuth oxide is dissolved in nitric acid (1 : 1); bismuth is purified from the accompanying metals by means of its precipitation in the form of oxohydroxo bismuth (III) nitrate trihydrate and treatment of the resulting precipitate with NH4Br or HBr solutions at a temperature of (60
V. M. BOUZNIK1 AND I. V. ZIBAREVA2 1Institute of Physicochemical Problems of Ceramic Materials, Russian Academy of Sciences, Ul. Ozernaya 48, Moscow 119361 (Russia) 2Vorozhtsov Novosibirsk Institute of Organic Chemistry, Siberian Branch of the Russian Academy of Sciences, Pr. Akademika Lavrentyeva 9, Novosibirsk 630090 (Russia) E-mail: zib@nioch.nsc.ru
Pages: 511-518
G. I. KHANTURGAEVA AND S. S. PALITSYNA
Baikal Institute of Nature Management, Siberian Branch of the Russian Academy of Sciences, Ul. Sakhyanovoy 6, Ulan Ude 670047 (Russia) E-mail: techmin@binm.bsc.bscnet.ru
Pages: 519-521
