Spherical TiO2 /Cr2O3 Composites Synthesized Using Ion-Exchange Resins as a Template

Two samples of TiO₂ /Cr₂O₃ composites were synthesized as spherical grains by stepwise thermal treatment of ion-exchange resins, which were preliminarily saturated with chromium cations Cr³⁺ and dichromate anions Cr2O₇ ^2– and covered with a film-forming solution of titania. The modes of calcination were based on thermal analysis and determined by the type of ion-exchange resin chosen as a template. The obtained composites consist mostly of the α-Cr₂O₃ phase, while the content of the TiO₂ phase does not exceed 4 %. The composites retain the spherical grain shape of the initial ion-exchange resins with the size from 370 to 660 μm. Grains of the sample based on cationite, which adsorbs Cr³⁺ ions, have a pore structure with swells and voids. Grains of the sample based on anionite have fractures and cracks over the entire surface due to nonuniform distribution of adsorbed Cr₂O₇^2– anions in the initial anionite. The composites exhibit the catalytic activity in the complete oxidation of p-xylene. The sample based on cationite is more active. This may be related to a smaller accessible specific surface area of titania in the anionite-based sample due to formation of the Ti³⁺ solid solution in α-Cr₂O₃.

1. Алхазов Т.Г, Марголис Л.Я. Глубокое каталитическое окисление органических веществ. М.: Химия, 1985.

2. Крылов О.В. Гетерогенный катализ. М.: Академкнига, 2004.

3. СССР Патент SU1563015; опубл. 1998.

4. Porsin A.V., Kulikov A.V., Dalyuk I.K., Rogozhnikov V.N., Kochergin V.I. // Chem. Eng. J. 2015. V. 282. P. 233—240. https://doi.org/10.1016/j.cej.2015.02.028

5. Zauresh T., Zheksenbaeva S.A., Tungatarova T.S., Baizhumanova E.Sh. // Chem. Eng. Trans. 2015. V. 45. P. 1213—1218. https://doi.org/10.3303/CET1545203

6. Goodman E.D., Dai Sh., Yang An-Ch., Wrasman C.J., Gallo A., Bare S.R., Hoffman A.S., Jaramillo T.F., Graham G.W., Pan X., Cargnello M. // ACS Catal. 2017. V. 7. P. 4372—4380. https://doi.org/10.1021/acscatal.7b00393

7. Lokhande S., Doggali P., Rayalu S., Devotta S., Labhsetwar N. // Atmospheric Pollut. Res. 2015. V. 6. P. 589—595. https://doi.org/10.5094/APR.2015.066

8. Tidahy H.L., Siffert S., Wyrwalski F., Lamonier J.-F., Aboukais A. // Catal. Today 2007. V. 119. P. 317—320. https://doi.org/10.1016/j.cattod.2006.08.023

9. Barbato P.S., Colussi S., Benedetto A.D., Landi G., Lisi L., Llorca J., Trovarelli A. // J. Phys. Chem. C 2016. V. 120. P. 13039—13048. https://doi.org/10.1021/acs.jpcc.6b02433

10. Baidya T., Murayama T., Bera P., Safonova O.V., Steiger P., Katiyar N.K., Biswas K., Haruta M. // J. Phys. Chem. C 2017. V. 121. P. 15256—15265. https://doi.org/10.1021/acs.jpcc.7b04348

11. Albert J.J., Frank J., Mohit R., Aman A., Himanshu Sh., AnuragAnurag H., Wessley J.J. // Int. J. Sci. Eng. Technol. 2017. V. 5. № 2. P. 19—26.

12. Yim S.D., Nam I.-S. // J. Catal. 2004. V. 221. P. 601—611. https://doi.org/10.1016/j.jcat.2003.09.026

13. Yim S.D., Chang K.-H., Koh D.J., Nam I.-S., Kim Y.G. // Catal. Today 2000. V. 63. P. 215—222. https://doi.org/10.1016/S0920-5861(00)00462-4

14. Padilla A.M., Corella J., Toledo J.M. // Appl. Catal. B Environ. 1999. V. 22. P. 107—121. https://doi.org/10.1016/S0926-3373(99)00043-0

15. Yates J.G., Lettieri P. Fluidized-Bed Reactors: Processes and Operating Conditions, in J.M Valverde Millan (Eds.), Particle Technology Series, Springer. 2016. V. 26. Р. 205. https://doi.org/10.1007/978-3-319-39593-7

16. Campanati M., Fornasari G., Vaccari A. // Catal. Today 2003. V. 77. P. 299—314. https://doi.org10.1016/S0920-5861(02)00375-9

17. Islam A., Taufiq-Yap Y.H., Chu C.-M., Ravindra P., Chan E.-S. // Renew. Energ. 2013. V. 59. P. 23—29. https://doi.org/10.1016/j.renene.2013.01.051

18. Fajardo H.V., Probst L.F.D. // Appl. Catal. Gen. 2006. V. 306. P. 134—141. https://doi.org/10.1016/j.apcata.2006.03.043

19. Пимнева Л.А., Нестерова Е.Л. // Фундаментальные исследования. 2011. Т. 4. С. 150—153. http://www.fundamentalresearch.ru/ru/article/view?id=21246

20. Пимнева Л.А., Нестерова Е.Л. // Современные наукоемкие технологии. 2010. Т. 1. С. 21—26. http://www.top-technologies.ru/ru/article/view?id=24360

21. Rogacheva A., Shamsutdinova A., Brichkov A., Larina T., Paukshtis E., Kozik V. // AIP Conf. Proc. 2017. V. 1899. P. 020007. https://doi.org/10.1063/1.5009832

22. Zharkova V., Bobkova L., Brichkov A., Kozik V. // AIP Conf. Proc. 2017. V. 1899. P. 020011. https://doi.org/10.1063/1.5009836

23. РФ Патент № 2608125; опубл. 2017.

24. Rudometkina T.M., Ivanov V.M. // Bulletin of Moscow University. Chemistry 2013. V. 54. P. 164—167. http://www.chem.msu.su/rus/vmgu/133/abs003.html

25. Шварценбах Г. Комплексометрическое титрование. М.: Химия, 1970. 268 с.

26. Shamsutdinova A.N., Brichkov A.S., Paukshtis E.A., Larina T.V., Cherepanova S.V., Glazneva T.S., Kozik V.V. // Catal. Commun. 2017, V. 89. P. 64—68. https://doi.org/10.1016/j.catcom.2016.10.018

27. Дроздов А.А., Зломанов В.П., Мазо Г.Н., Спиридонов Ф.М., Третьяков Ю.Д. Неорганическая химия. М.: Академия, 2007.

28. Корчагин В.И. // Росс. жур. хим. и хим. технол. 2006. Т. 49. С. 59—63.

29. Пимнева Л.А. // Фундаментальные исследования. 2014. Т. 8. С. 614—619. http://www.fundamental-research.ru/ru/article/view?id=34603

30. Яковишин В.А., Савенков А.С. // Бюллетень НТУ ХПИ 2009. Т. 40. С. 59—64. http://repository.kpi.kharkov.ua/handle/KhPI-Press/32186

31. Zherebtsov D.A., Viktorov V.V., Kulikovskikh S.A., Belaya E.A., Galimov D.M. // Inorg. Mater. 2016. V. 52. P. 33—37. https://doi.org/10.1134/S0020168516010167

32. Shannon R.D. // Acta Crystallogr. A 1976. V. A32. P. 751—767. https://doi.org/10.1107/S0567739476001551

33. Nemykina E.I., Pakhomov N.A., Danilevich V.V., Rogov V.A., Zaikovskii V.I., Larina T.V., Molchanov V.V. // Kinet. Catal. 2010. V. 51. P. 898—906. https://doi.org/10.1134/S0023158410060169