Юрий Кълвачев Проф., д-р Заместник-директор (+359 2) 9793989 (+359) 878 457425 email: kalvachev@ic.bas.bg

Области на научен интерес

• Синтез на микропорести и мезопорести материали
• Синтезно и постсинтезно модифициране на зеолити
• Зеолитизация на въглищна пепел
• Адсорбция на въглероден диоксид върху зеолити
• Катализ за опазване на околната среда 

 Публикации:

1.      L. Dimitrov, V. Valtchev, D. Nihtianova, Yu. Kalvachev, Submicrometer Zeolite A Crystals Formation: Low-Temperature Crystallization Versus Vapor Phase Gel Transformation, Cryst. Growth Des., 11,4958–4962, 2011.

2.      C. Hamciuc, E. Hamciuc, L. Okrasa, Yu. Kalvachev, The effect of zeolite L content on dielectric behaviour and thermal stability of polyimide thin films, J.Mater.Sci., 47, 6354-6365, 2012.

3.      Yu. Kalvachev, M. Jaber, V. Mavrodinova, L. Dimitrov, D. Nihtianova, V. Valtchev, Seeds-induced fluoride media synthesis of nanosized zeolite Betacrystals, Microporous and Mesoporous Materials,177,  127–134, 2013.

4.      E.  Hamciuc, C. Hamciuc,V. Musteata, Yu. Kalvachev, A. Wolinska-Grabczyk, Preparation and characterizationof new polyimide films containingzeolite L and/or silica, High performance polymers, 26(2) 175–187, 2014.

5.      T. Todorova, Yu. Kalvachev, Seed-mediated approach to size-controlled synthesis of a mordenite type zeolite from organic template free initial gel, Bulg. Chem.Commun., 47, 409-416, 2015.

6.      S. Boycheva, D. Zgureva, B. Barbov, Yu. Kalvachev, Synthetic Micro-and Nanocrystalline Zeolites for Environmental Protection Systems in “Nanoscience Advances in CBRN Agents Detection”, NATO Science for Peace and Security Series A: Chemistry and Biology, Petkov, P., Tsiulyanu, D., Kulisch, W., & Popov, C. (Eds.) Springer, pp. 443-450, ISBN 978-94-017-9697, 2015

7.      E. Hamciuc, M. Ignat, C. Hamciuc, I. Stoica, L. Dimitrov, Yu. Kalvachev, M. Olariu,Electromechanical propertiesof polyimide composites–containing titanium dioxide nanotubes, High performance polymers, 27, 590-598, 2015.

8.      B. Barbov, Yu. Kalvachev, Seed-assisted synthesis of nanosized Beta zeolite, Compt. rend. Acad. bulg. Sci., 68, 983-990, 2015.

9.      Yu. Kalvachev, D. Zgureva, S. Boycheva, B. Barbov, N. Petrova, Synthesis of carbon dioxide adsorbents by zeolitization of fly ash, J.Therm.Anal.Calor., 124 (1), 101-106, DOI: 10.1007/s10973-015-5148-1, 2016.

10. T. Todorova, Yu. Kalvachev, H. Lazarova, M. Popova, Catalytic activity of modified mordenite in the reaction of m-xylene transformation, Compt. rend. Acad. bulg. Sci., 69 (10), 1283-1290, 2016.

11. K. Mladenova, S. Petrova, T. Andreeva, V. Moskova-Doumanova, T. Topouzova-Hristova, Yu. Kalvachev, K. Balashev, S. Bhattacharya, Ch. Chakarova, Z. Lalchev, J. Doumanov, Effects of Ca²⁺ ions on bestrophin-1 surface films, Colloids and Surfaces B: Biointerfaces, 149, 226-232, 2017.

12. M. Olariu, C. Hamciuc, L. Okrasa, E. Hamciuc, L. Dimitrov, Yu. Kalvachev, Electrical properties of polyimide composite films containing TiO₂ nanotubes, Polymer Composites, DOI: 10.1002/pc.23851, 2017.

13. Yu. Kalvachev, T. Todorova, D. Nihtianova, H. Lazarova, M. Popova, Fluoride etching of mordenite and its influence on catalytic activity, J. Mater. Sci, 52,  5297-5308,DOI: 10.1007/s10853-017-0769-3, 2017.

14. M. Popova, H. Lazarova, Yu. Kalvachev, T. Todorova, A. Szegedi, P. Shestakova, G. Mali,V. Dasireddy, B. Likozar, Zr-modified hierarchical mordenite as heterogeneous catalyst for glycerol esterification, Catalysis Communication, 100, 10-14, doi: 10.1016/j.catcom.2017.06.009, 2017.