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Aluminum oxide carrier for a catalyst for low-temperature isomerization of hydrocarbons

https://doi.org/10.32362/2410-6593-2020-15-3-58-69

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Abstract

Objectives. Determine the necessary conditions for obtaining a granulated η-Al2O3 carrier, investigate its structural and strength properties, and evaluate its activity for the model n-butane isomerization reaction.

Methods. Samples containing bayerite structure aluminum trihydroxide were synthesized by precipitation from aqueous solutions of aluminum nitrate with ammonia under isothermal conditions at a constant pH value. The samples of the granulated carrier were obtained using an extrusion method when the composition of molding pastes was varied by tuning the ratio of bayerite- and η-Al2O3 -containing components and introducing polyvinyl alcohol.

Results. The influence of the preparation conditions on the structural and strength properties of the active Al2O3 granules is evaluated. Samples of the aluminum oxide carrier were tested for a model reaction of low-temperature isomerization of n-butane, demonstrating a sufficiently high selectivity and reasonable prospects for use as catalysts for low-temperature isomerization of hydrocarbons.

Conclusions. Increasing the content of the polyvinyl alcohol in the molding paste from 0.4 to 1.8 wt % is accompanied by an increase in the predominant sizes of the mesopores in the range of 10–50 nm and pores in the range of 50–80 nm, explaining the high values of all recorded parameters for the process of isomerization of n-butane.

About the Authors

N. Tagandurdyyeva
Saint-Petersburg State Institute of Technology
Russian Federation

Nurjahan Tagandurdyyeva, Postgraduate Student, Department of General Chemical Technology and Catalysis

26, Moskovsky pr., St. Petersburg, 190013



N. V. Maltseva
Saint-Petersburg State Institute of Technology
Russian Federation

Natalya V. Maltseva, Cand. of Sci. (Engineering), Associate Professor of the Department of General Chemical Technology and Catalysis

26, Moskovsky pr., St. Petersburg, 190013



T. A. Vishnevskaya
Saint-Petersburg State Institute of Technology
Russian Federation

Tatyana A. Vishnevskaya, Engineer, Department of General Chemical Technology and Catalysis

26, Moskovsky pr., St. Petersburg, 190013



V. N. Narayev
Saint-Petersburg State Institute of Technology
Russian Federation

Vyacheslav N. Narayev, Dr. of Sci. (Chemistry), Professor, Department of General Chemical Technology and Catalysis

26, Moskovsky pr., St. Petersburg, 190013



A. Yu. Postnov
Saint-Petersburg State Institute of Technology
Russian Federation

Arkady Yu. Postnov, Cand. of Sci. (Engineering), Associate Professor, Head of the Department of General Chemical Technology and Catalysis

26, Moskovsky pr., St. Petersburg, 190013



References

1. Valavarasu G., Sairam B. Light Naphta Isomerization Process: A Review. Petrol. Sci. Technol. 2013;31(6):580-595. https://doi.org/10.1080/10916466.2010.504931

2. Borutsky P.N. Catalytic processes for the production of branched hydrocarbons. St. Petersburg: NPO Professional; 2010. 724 p. (in Russ.).

3. Ono Y. A survey of the mechanism in catalytic isomerization of alkanes. Catal. Today. 2003; 81(1):3-16. https://doi.org/10.1016/S0920-5861(03)00097-X

4. Smolikov M., Dzhikiya O., Zatolokina E., Kiryanov D., Belyi A. Isomerization of n-hexane over bifunctional Pt/SO 4 /ZrO 2 catalysts. Petrol. Chem. 2009;49(473):473-480. https://doi.org/10.1134/S096554410906005X

5. Yasakova E.A., Sitdikova A.V., Akhmetov A.F. Trends in the development of the isomerization process in Russia and abroad. Neftegazovoe delo = Electronic scientific journal Oil and Gas Business. 2010;1:1-19 (in Russ.). Available from: http://ogbus.ru/files/ogbus/authors/Yasakova/Yasakova_1.pdf

6. Sousa B.V., Brito K.D., Alves J.J.N., Rodrigues M.G.F., Yoshioka C.M.N., Caardoso D. n-Hexane Isomerization on Pt/HMOR: Effect of Platinum Content. Reaction Kinetics, Mechenisms and Catalysis. 2011;102(2):473-485. https://doi.org/10.1007/s11144-010-0273-0

7. Hidalgo J.M., Zbuzek M., Černý R., Jíša P. Current uses and trends in catalytic isomerization, alkylation and etherification processes to improve gasoline quality. Cent. Eur. J. Chem. 2014; 12(1):1-13. https://doi.org/10.2478/s11532-013-0365-6

8. Borutsky P.N., Podkletnova N.M. Catalytic processes of isomerization and dehydrogenation of hydrocarbons for the production of gasoline isocomponents. Kataliz v promyshlennosti (Catalysis in Industry). 2003;2:86-88 (in Russ.).

9. Ivanova A.S. Alumina: application, production methods, structure and acid-base properties. Promyshlennyi kataliz v lektsiyakh = Industrial Catalysis in Lectures. 2009;8:7-61 (in Russ.).

10. Chukin G.D. Stroenie oksida alyuminiya i katalizatorov gidroobesserivaniya. Mekhanizmy reaktsii (The structure of alumina and hydrodesulfurization catalysts. Reaction mechanisms). Moscow: Printa; 2012. 288 p. ISBN 5-93969-036-X (in Russ.).

11. Kinyakin A.S., Glushachenkova E.A., Borutskii P.N., Shuvalov A.S., Pisarenko Yu.A. Kinetics of the lowtemperature isomerization of n-hexane on the NIP-3A catalyst in an isothermal flow reactor. Theor. Found. Chem. Eng. 2008;42(6):815-821. https://doi.org/10.1134/S0040579508060031

12. Seliverstova M.B., Vlasov E.A., Deryuzhkina V.I. Investigation of the rheological properties of peptized pastes of aluminum hydroxide. Zhurnal Prikladnoi Khimii = J. Appl. Chem. 1981;54:2307-2310 (in Russ.).

13. Il’in A.P., Prokof’ev V.Ju. Fiziko-khimicheskaya mekhanika v tekhnologii katalizatorov i sorbentov (Physical and chemical mechanics in the technology of catalysts and sorbent). Ivanovo: Ivanovo State University of Chemistry and Technology; 2004. 315 p. ISBN 5-9616-0049-1 (in Russ.).

14. Tagandurdyyeva N., Burlutskaya L.P. Development of a method for the synthesis of a bayerite-containing catalyst for the isomerization of hydrocarbons. In: Innovative materials and technologies in design: abstracts of the IV All-Russian scientific and practical conference with the participation of young scientists, March 22, 23. 2018:17-18 (in Russ.).

15. Nechiporenko A.P., Kudryashova A.I., Koltsov S.I. The method for determining the surface acidity of solids: USSR Pat. 4036187. Publ. 28.02.1988 (in Russ.).

16. Greg S., Sing K. Adsorbtsiya. Udel’naya poverkhnost’. Poristost’ (Adsorption, Specific Surface Area, Porosity). Moscow: Mir; 1984. 306 p. (in Russ.).

17. Muhlenov I.P. Issledovanie mekhanicheskoi prochnosti katalizatorov (The study of the mechanical strength of the catalysts). Leningrad: LTI im. Lensoveta; 1981. 27 p. (in Russ.).

18. Deryuzhkina V.I. Metody issledovaniya poristoi struktury katalizatorov (Methods of studying the porous structure of catalysts). Leningrad: LTI im. Lensoveta; 1981. 27 p. (in Russ.).

19. Borutskiy P.N. Sal՚nikov V.A., Nikul՚shin P.A., Aleksandrova Yu.V., Kuzichkin N.V. Konversiya n-butana – metod testirovaniya tverdokislotnykh katalizatorov i ikh nositelei dlya protsessov neftepererabotki (Conversion of n-butane – a test method for solid acid catalysts and their carriers for oil refining processes). St. Petersburg: SPbGTI (TU); 2017. 94 p. (in Russ.).

20. Busca G. Structural, Surface, and Catalytic Properties of Aluminas. Adv. Catal. 2014;57(3):319-404. https://doi.org/10.1016/B978-0-12-800127-1.00003-5


Supplementary files

1. Differential particle size distribution curve of bayerite powder.
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2. This is to certify that the paper titled Aluminum oxide carrier for a catalyst for low-temperature isomerization of hydrocarbons commissioned to Enago by Nurjahan Tagandurdyyeva, Natalya V. Maltseva, Tatyana A. Vishnevskaya, Vyacheslav N. Narayev, Arkady Yu. Postnov has been edited for English language and spelling by Enago, an editing brand of Crimson Interactive Inc.
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  • During the deposition of bayerite from an aluminum nitrate solution at 20°C, a precipitate with particle sizes from 0.2 to 50 μm was formed.
  • Using PVA as the component of the dispersion medium for forming pastes made from bayerite powder led to a decrease in the degree of separation of colloid-bound water from the interlayer space of bayerite.
  • Introduction of the η-Al2O3 powder as a heterogeneous additive in the bayerite molding paste, which was plasticized by PVA, enabled regulation of the porous structures of the resulting carriers.

For citation:


Tagandurdyyeva N., Maltseva N.V., Vishnevskaya T.A., Narayev V.N., Postnov A.Yu. Aluminum oxide carrier for a catalyst for low-temperature isomerization of hydrocarbons. Fine Chemical Technologies. 2020;15(3):58-69. https://doi.org/10.32362/2410-6593-2020-15-3-58-69

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ISSN 2410-6593 (Print)
ISSN 2686-7575 (Online)