Copolymers of the C9 hydrocarbon fraction of liquid pyrolysis products with maleic anhydride and their esterification products as additives to paper pulp

2007 ◽  
Vol 80 (2) ◽  
pp. 295-299
Author(s):  
V. P. Lesnyak ◽  
D. I. Shiman ◽  
L. V. Gaponik ◽  
F. N. Kaputskii ◽  
A. I. Lamotkin ◽  
...  
2007 ◽  
Vol 80 (5) ◽  
pp. 822-827 ◽  
Author(s):  
V. P. Lesnyak ◽  
D. I. Shiman ◽  
L. V. Gaponik ◽  
S. V. Kostyuk ◽  
F. N. Kaputskii

Author(s):  
Valeriy Narushevich ◽  
Кузнецова Татьяна ◽  
Tat'yana Raskulova

The main industrial methods of benzene production are considered. Comparison of the parameters of operation and purity of the obtained benzene of the main industrial hydrodealkylation plants showed the advantages of the catalytic process


2021 ◽  
Vol 05 ◽  
pp. 28-33
Author(s):  
M.N. Tsukanov ◽  
◽  
V.M. Kapustin ◽  
M.J. Makhmudov ◽  
R.V. Khakimov ◽  
...  

The development of technologically efficient and economical methods of using liquid pyrolysis products is a task of current interest. Despite the apparent variety of developments, the proposed methods are reduced either to obtaining a set of fractions, which are subsequently used as technical products, or to obtaining a wide range of individual compounds. The complexity and wastelessness of oil refining and petrochemistry, which has become especially acute due to the increasing negative impact of human activities on the environment, provides for the complete utilization of all material flows with the maximum extraction of useful components, the use of technologies, catalysts and reagents that exclude the formation of harmful emissions and waste. Currently, one of the most common methods for producing lower olefins (ethylene, propylene, butylenes) is the pyrolysis of hydrocarbons of various origins (gas, straight-run gasoline, a broad fraction of light hydrocarbons, etc.).


2018 ◽  
Vol 54 (3) ◽  
pp. 271-277 ◽  
Author(s):  
A. A. Alaseeva ◽  
S. I. Khusnutdinov ◽  
S. M. Petrov ◽  
I. Sh. Khusnutdinov ◽  
A. G. Safiulina ◽  
...  

2014 ◽  
Vol 12 (2) ◽  
pp. 266-280 ◽  
Author(s):  
Taras Voronchak ◽  
Irena Nykulyshyn ◽  
Zorian Pikh ◽  
Anna Rypka ◽  
Zoriana Gnativ

AbstractCooligomerization of liquid products of the C9 fraction of diesel fuel pyrolysis to produce cooligomers of wide application is suggested to be carried out with silica-alumina catalysts, among which the activated bentonite clay seems to be optimal. Cooligomerization of the mixture simulating the C9 fraction composition was studied to compare the suggested heterogeneous catalytic method with other methods of cooligomers production. Different methods have been compared in terms of yield of cooligomers and their properties, namely molecular weight and its distribution, density, unsaturation and colour. The ratio of monomer units in cooligomer has been determined and the monomers conversion degrees have been calculated for different cooligomerization methods. Reasons of structure and composition differences of cooligomers obtained by different methods are suggested.


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