Petroleum Chemistry

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Zeolite membranes: Synthesis, properties, and application
Petroleum Chemistry - Tập 51 - Trang 657-667 - 2012
D. A. Fedosov, A. V. Smirnov, E. E. Knyazeva, I. I. Ivanova
The review represents a brief analysis of the known methods for the preparation of zeolite membranes with a continuous selective layer and zeolite crystals embedded in their matrix. The principles of separation on zeolite membranes and the fields of application of these materials are discussed. Some examples of the separation of substances and membrane catalysis on zeolite membranes are given to c... hiện toàn bộ
Joint conversion of butane and hexane in the presence of supported platinum catalysts
Petroleum Chemistry - Tập 49 Số 6 - Trang 481-486 - 2009
V. V. Pashkov, D. V. Golinskii, И. Е. Удрас, А. С. Белый
Synthesis Gas Production by Partial Oxidation of Methane and Dry Reforming of Methane in the Presence of Novel Ni–Co/MFI Catalysts
Petroleum Chemistry - Tập 58 - Trang 203-213 - 2018
A. G. Dedov, A. S. Loktev, I. E. Mukhin, A. A. Karavaev, S. I. Tyumenova, A. E. Baranchikov, V. K. Ivanov, K. I. Maslakov, M. A. Bykov, I. I. Moiseev
Catalysts based on Ni, Co, and NiCo supported on MFI zeolites for the partial oxidation of methane and dry reforming of methane to synthesis gas have been synthesized and studied. The total metal content in the catalysts is 2 wt %. A commercial zeolite with a binder (alumina) and a binder-free zeolite synthesized by an accelerated microwave-assisted hydrothermal method are used as supports. The sy... hiện toàn bộ
Ethylene oligomerization on the chromium ethylhexanoate-triethylaluminum-2,5-dimethylpyrrol catalytic system in the presence of carbon tetrachloride
Petroleum Chemistry - - 2011
И. И. Хасбиуллин, Г. П. Белов, Х. Э. Харлампиди, A. I. Vilms
Interaction of 2-Monosubstituted 1,3-Dioxolanes with Aluminacyclopentanes
Petroleum Chemistry - Tập 59 - Trang 650-655 - 2019
T. F. Dekhtyar’, O. S. Vostrikova, S. S. Zlotskii, A. A. Bogomazova, N. N. Mikhailova
The interaction of 2-monosubstituted 1,3-dioxolanes with 3-hexyl-1-ethylaluminacyclopentane leads to the cleavage of the Al–C bond of the metallocycle and the formation of ethylene glycol monoethers after hydrolysis of the resulting reaction mixture. Catalytic amounts of ZrCl4 or Ni(acac)2 activate the process. The reaction of 2-monosubstituted 1,3-dioxolanes with 1-ethyl-3-naphthylaluminacyclopen... hiện toàn bộ
Activity of Zeolites of Different Types in n-Alkane Cracking in a Three-Phase Reactor
Petroleum Chemistry - Tập 59 - Trang 596-602 - 2019
K. I. Dement’ev, T. A. Palankoev, D. S. Abramova, P. S. Kuznetsov, A. V. Zolotukhina, A. L. Maksimov, S. N. Khadzhiev
The catalytic activity of zeolites of three types—Y, ZSM-5, and Beta—in the cracking of С20–С35n-alkanes in a three-phase reactor has been studied under the following conditions: a temperature of 300–380°C, a hydrogen pressure of 7 atm, and a catalyst content of 1 wt %. It has been shown that the activity of zeolite Beta in cracking reactions is several times higher than the activity of zeolites o... hiện toàn bộ
Using a Single Set of Structural and Kinetic Parameters of the Microheterogeneous Model to Describe the Sorption and Kinetic Properties of Ion-Exchange Membranes
Petroleum Chemistry - Tập 58 - Trang 465-473 - 2018
N. D. Pismenskaya, E. E. Nevakshenova, V. V. Nikonenko
The concentration dependences of the electrolyte sorption, specific electric conductivity, and diffusion permeability of MK-40 and Nafion-117 cation-Ion-exchange membranes in NaCl solutions have been obtained experimentally. Both the membranes contain macropores. The heterogeneous MK-40 membrane contains pores with a size of up to 1 μm between the particles of the ion Ion-exchange resin and polyet... hiện toàn bộ
Hydrodynamics of a thermopervaporation flow membrane module with cylindrical spacers
Petroleum Chemistry - Tập 53 - Trang 578-584 - 2014
V. A. Kirsh, I. L. Borisov, V. V. Volkov
The influence of hydrodynamic flow of a butanol-water mixture on the thermopervaporation (TPV) permeate flux and the separation factor has been theoretically and experimentally studied. A possibility of enhancement of thermopervaporation with cylindrical spacers placed in the feed channel or with pulsating feed flow is illustrated by the example of thermopervaporation of a dilute 1-butanol aqueous... hiện toàn bộ
Routes for reactions of alkylene oxides with R-β-hydroxyalkyl sulfides: Unusual exchange of functional groups
Petroleum Chemistry - Tập 52 - Trang 194-203 - 2012
A. D. Malievskii
Possible routes of the previously unknown exchange reaction of alkylene oxides with R-β-hydroxyalkyl sulfides have been considered. Each route has intermediates and transition states of its own, but all the directions in the final stage lead to the formation of a single intermediate cyclic bipolar ion with intramolecular hydrogen bonding, which determines the common nature and composition of end p... hiện toàn bộ
Chemical behavior of 5-vinyl-2-norbornene, 5-ethylidene-2-norbornene, and related compounds as a key to understanding the specifics of radiation-chemical processes: 2. The structure of polymeric products according to IR data
Petroleum Chemistry - Tập 47 - Trang 92-98 - 2007
I. Yu. Shchapin, O. V. Makhnach, V. L. Klochikhin, Yu. G. Osokin, A. I. Nekhaev
It was found that the main products of γ-radiolysis (60Co) of liquid 5-vinyl-2-norbornene (VNB) and 5-ethylidene-2-norbornene (ENB) and their solutions in cyclohexane and benzene are polymers. The structure of these polymers was determined by means of IR spectroscopy. It was shown that the polymerization of individual VNB engages both C=C bonds of the diene and involves norbornene ring opening. In... hiện toàn bộ
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