Published October 2021, Pg. 43-48
Section: Oil refining and petroleum chemistry
UOT: 665.612.2
DOI: 10.37474/0365-8554/2021-10-43-48
The synthesis of SAPO-34 catalyst in the presence of activated carbon and the study of methanole transformation process into the olephines
H.J. Ibrahimov Dr. in Tech. Sc. - Institute for Petrochemical ProcessesThe paper deals with the results of transformation process of methanol into the low molecule in the presence of silicoalumophosphate (SAPO-34) catalyst synthesized via sonochemical method with adding activated carbon. The studies on physico-chemical properties of synthesized catalyst with up-to-date analysis methods are presented as well. It was revealed that without adding the water into the raw, the C2-C4 olephine yield in the first hour of process comprises 66–
69 % mass, while applying raw-water mixture, the parameter increases up to 80–82 % mass. It is explained with the fact that the water increases the efficient service life of the catalyst due to the partial prevention of coke formation.
References:
1. Ahmadova R.H., Ibragimov H.J., Rustamov M.I., Kondratenko E.V. Characteristic properties of synthesis process of olefins from methanol over microporous silicoaluminophosphate catalysts // Azerbaijan Milli Elmler Akademiyasinin Meruzeleri, 2016, No 1, s. 40-43.
2. Luckner J. Effect of process parameters on methanol to olefins reactions over SAPO catalysts / A thesis for the degree of master of sciences, Alabama, 2005, p. 116.
3. Razavian M., Halladj R., Askari S. Recent advances in silicoaluminophosphate nanocatalysts synthesis techniques and their effects on particle size distribution // Rev. Adv. Mater. Sci., 2011, vol. 29, pp. 83-99.
4. Hajiashrafi T., Kharat A.N. Study of preparation methods and their effect on the morphology and texture of SAPO-34 for the methanol to olefin reaction // Reac. Kinet Mech Cat, 2013, vol. 108, pp. 417-432.
5. Campelo J.M., Lagout F., Marinas J.M., Ojeda M. Studies of catalyst deactivation in methanol conversion with high, medium and small pore silicoaluminophosphates // Applied Catalysis A: General, 2000, vol. 192, No 1, pp. 85-96.
6. Jean L. Effect of process parameters on methanol to olefins reactions over SAPO catalysts / A thesis for the degree of master of sciences, Alabama, 2005, 116 p.
7. Lefevere J., Mullens S., Meynen V., Jasper V.N. Structured catalysts for methanol-to-olefins conversion: a review // Chemical Papers, 2014, vol. 68, No 9, pp. 1143-1153.
8. Salmasi M., Fatemi S., Hashemi S.J. MTO reaction over SAPO-34 catalysts synthesized by combination of TEAOH and morpholine templates and different silica sources // Scientia Iranica C, 2012, vol. 19, pp. 1632-1637.
9. Wang P., Lv A., Hu J. et al. The synthesis of SAPO-34 with mixed template and its catalytic performance for methanol to olefins reaction // Microporous and mesoporous materials, 2012, vol. 152, pp. 178-184.
10. Ye L., Cao F., Ying W. Effect of TEAOH/DEA combination on SAPO-34’s synthesis and catalytic performance // J. Porous Materials, 2011, vol. 18, pp. 225-232.
11. Liu G., Tian P., Li J. et al. Synthesis, characterization and catalytic properties of SAPO-34 synthesized using diethylamine as a template // Microporous and mesoporous materials, 2008, vol. 111, pp. 143-149.
12. Lee Y-J., Baek S-C., Jun K-W. Methanol conversion on SAPO-34 catalysts prepared by mixed template method // Applied Catalysis A: General, 2007, vol. 329, pp. 130-136.
13. Schmidt F., Paasch S., Brunner E., Kaskel S. Carbon template SAPO-34 with improved adsorption kinetics and catalytic performance in the MTO reaction // Microporous and mesoporous materials, 2012, vol. 164, pp. 214-221.
14. Schmidt I., Boisen A., Gustavsson E. et al. Carbon nanotube template growth of mesoporous zeolite single crys-
tals // Chem. Mater., 2001, vol. 13, pp. 4416-4418.
15. Soltanali S., Darian J.T. Synthesis of mesoporous SAPO-34 catalysts in the presence of MWCNT, CNF and GO as hard templates in MTO process // Powder Technology, 2019, vol. 355, pp. 127-134.
16. Rimaz S., Halladj R., Askari S. Synthesis of hierarchal SAPO-34 nanocatalyst with dry gel conversion method in the presence of carbon nanotubes as a hard template // Journal of colloid and interface science, 2016, vol. 464, pp. 137-146.
17. Charghand M., Haghighi M., Saedy S., Aghamohammadi S. Efficient hydrothermal synthesis of nanostructured SAPO-34 using ultrasound energy: Physicochemical characterization and catalytic performance toward methanol conversion to light olefins // Advanced powder technology, 2014, vol. 25, pp. 1728-1736.
18. Ahmadova R., İbragimov H., Kondratenko E., Rodemerc U. Synthesis of SAPO-34 catalysts via sonochemically prepared method and its catalytic performance in methanol conversion to light olefins // Applied petrochemical research, 2018, vol. 8, No 1, pp. 13-20.
19. Ahmadova R.H., Ibrahimov H.J., Babayeva F.A. et al. The perspective of methanol to olefins process over nanostructured zeolite catalysts, mechanism and synthesized methods: a review // Processes of petrochemistry and oil refining, 2017, vol. 18, No 2, pp. 171-187.
20. Askari S., Halladj R., Sohrabi M. Methanol conversion to light olefins over sonochemically prepared SAPO-34 nanocatalyst // Microporous and mesoporous materials, 2012, vol. 163, pp. 334-342.
21. Ibrahimov H.J., Akhundova K.M., Guliyev N.G., Ibrahimova Z.M., Huseynov H.J. Investigation of the absorption of sunflower oil as adsorbent obtained by thermochemical activation of heavy pyrolysis resin // PPOR, 2019, vol. 2,
No 2, pp. 130-137.