A Microfiber Catalyst with Lemniscate Sstructural Elements

A new type catalyst based on a microfiber support is reported. The microfibers are twisted as looped threads (lemniscates) to form a geometrically regular flexible bulk bed which is stable and well penetrable for the reaction flow; there is no need in additional structuring elements. Experimental studies on deep oxidation of toluene showed that the suggested lemniscates fiberglass catalyst (LFGC) is much superior to the known geometrical type (including microfiber) catalysts; its observed activity per mass unit of the active component and the ratio of the observed activity to the specific pressure drop are as high as 8 to 10 times of those characteristic of the latter. The reason is the unique high efficiency of mass exchange at the outdiffusion region of the reaction. The potential application areas of the suggested systems are fast catalytic gas-phase reactions, as well as complex reactions where the selectivity and target product yields are sensitive to the diffusion.

1. Боресков Г.К. Гетерогенный катализ. Наука: Новосибирск, 1986

2. Cybulski A., Moulijn J.A. Catal. Rev. Sci. Eng. 36 (1994) 179–270.

3. Roy S., Bauer T., Al-Dahhan M., Lehner P., Turek T. AIChE J. 50 (2004) 2918–2938.

4. Pestryakov A.N., Fyodorov A.A., Shurov V.A. React. Kinet. Catal. Lett. 53 (1994) 347-352.

5. Richardson J.T., Remue D., Hung J.-K. App. Catal. A: Gen. 250 (2003) 319-329.

6. Giani L., Groppi G., Tronconi E. Ind. and Eng. Chem. Res. 44 (2005) 4993-5002.

7. Twigg M.V., Richardson J.T. Ind. and Eng. Chem. Res. 46 (2007) 4166-4177.

8. Incera Garrido G., Patcas F.C., Lang S., Kraushaar-Czarnetzki B. Chem. Eng. Sci. 63 (2008) 5202-5217.

9. Jiang Z., Chung K.-S., Kim G.-R., Chung J.-S. Chem. Eng. Sci. 58 (2003) 1103-1111.

10. Sun H., Shu Y., Quan X., Chen S., Pang B., Liu Z. Chem. Eng. J., 165 (2010) 769-775.

11. Banús E.D., Sanz O., Milt V.G., Miró E.E., Montes M. Chem. Eng. J., 246 (2014) 353-365.

12. Porsin A.V., Kulikov A.V., Dalyuk I.K., Rogozhnikov V.N., Kochergin V.I. Chem. Eng. J. 282 (2015) 233–240.

13. Balzhinimaev B.S., Paukshtis E.A., Vanag S.V., Suknev A.P., Zagoruiko A.N. Catalysis Today. 2010. V. 151. P. 195–199.

14. Лопатин С.А., Цырульников П.Г., Котолевич Ю.С., Микенин П.Е., Писарев Д.А., Загоруйко А.Н. Катализ в пром-сти. 2015. № 3. С. 6–72

15. Микенин П.Е., Цырульников П.Г., Котолевич Ю.С., Загоруйко А.Н. Катализ в пром-сти. 2015. № 1. С. 65–70

16. Pei T., Liu L., Xu L., Li Yu, He D. Catal. Commun., 74 (2016) 19-23.

17. Desyatikh I.V., Vedyagin A.A., Kotolevich Y.S., Tsyrulnikov P.G. Combust., Explos. and Shock Waves, 47 (2011), pp. 677-682.

18. Kotolevich Y.S., Khramov E.V., Mironenko O.O., Zubavichus Ya.V., Murzin V.Yu., Frey D.I., Metelev S.E., Shitova N.B., Tsyrulnikov P.G. Int. J. of Self-Propagating High-Temperature Synthesis, 23 (2014), pp. 9-17.

19. Lopatin S., Mikenin P., Pisarev D., Baranov D., Zazhigalov S., Zagoruiko A. Chem. Eng. J. 2015. V. 282. P. 58–65.

20. Lopatin S.A., Zagoruiko A.N. Pressure drop of structured cartridges with fiber‐glass catalysts. Chem. Eng. J. 2014. V. 238. P. 31–36.