Zobrazeno 1 - 10
of 85
pro vyhledávání: '"Oleg Kikhtyanin"'
Autor:
Lada Dubnová, Rostislav Daňhel, Vendula Meinhardová, Valeriia Korolova, Lucie Smoláková, Tomasz Kondratowicz, Oleg Kikhtyanin, Libor Čapek
Publikováno v:
Frontiers in Chemistry, Vol 9 (2022)
A memory effect is the ability to restore the original, lamellar layered double hydroxide structure. Herein, we have described 1) the changes in the structural and basic properties of ZnAl mixed oxides during their transformation into ZnAl-reconstruc
Externí odkaz:
https://doaj.org/article/c347df372679440a965240e1424dbaef
Publikováno v:
Catalysts, Vol 11, Iss 11, p 1417 (2021)
CuZn catalysts are perspective catalysts for esters hydrogenolysis, but more knowledge is needed to optimize their catalytic performance. In this work, we consider the impact of CuZn catalysts composition on their structure, activity, selectivity, an
Externí odkaz:
https://doaj.org/article/08fca5aa25e4404fac3c7e023c1ff9fc
Autor:
Valeriia Korolova, Oleg Kikhtyanin, Martin Veselý, Dan Vrtiška, Iva Paterová, Vlastimil Fíla, Libor Čapek, David Kubička
Publikováno v:
Catalysts, Vol 11, Iss 8, p 992 (2021)
Hydrotalcites (HTCs) are promising solid base catalysts to produce advanced biofuels by aldol condensation. Their main potential lies in the tunability of their acid-base properties by varying their composition. However, the relationship between the
Externí odkaz:
https://doaj.org/article/80a34a5ce72c405d81bc4c7eb70d6be7
Autor:
Maria V. Alekseeva (Bykova), Olga A. Bulavchenko, Andrey A. Saraev, Anna M. Kremneva, Mikhail V. Shashkov, Olesya O. Zaikina, Yuliya K. Gulyaeva, Andrey N. Grachev, Oleg Kikhtyanin, David Kubička, Vadim A. Yakovlev
Publikováno v:
Catalysts, Vol 10, Iss 11, p 1273 (2020)
The high-energy potential of wastewater sewage sludge (SS) produced in large amounts around the world makes it an attractive feedstock for fuels and energy sectors. Thermochemical valorization relying on pyrolysis of SS followed by hydrotreatment of
Externí odkaz:
https://doaj.org/article/ebab5d71cc424774bcd6cca2d78fae41
Autor:
Oleg Kikhtyanin, Libor Čapek, Zdeněk Tišler, Romana Velvarská, Adriana Panasewicz, Petra Diblíková, David Kubička
Publikováno v:
Frontiers in Chemistry, Vol 6 (2018)
MgGa layered double hydroxides (Mg/Ga = 2–4) were synthesized and used for the preparation of MgGa mixed oxides and reconstructed hydrotalcites. The properties of the prepared materials were examined by physico-chemical methods (XRD, TGA, NH3-TPD,
Externí odkaz:
https://doaj.org/article/135a1a559b234afa82a2a4ba62baa1a8
Publikováno v:
Catalysts, Vol 8, Iss 10, p 446 (2018)
A series of CuZn catalysts with a Cu/Zn ratio of 1.6 was prepared by the calcination of a single precursor, CuZn-P consisting of an equimolar mixture of aurichalcite and zincian malachite, in three different calcination atmospheres (air, nitrogen, an
Externí odkaz:
https://doaj.org/article/a7f58a199d6b48cf883d03f24946cf82
Autor:
Oleg Kikhtyanin, David Kubička
Publikováno v:
Sustainable Energy & Fuels. 7:485-501
Ni/Al2O3 and Co/Al2O3 perform differently in the conversion of aliphatic acids as evidenced by the preferred reaction pathways for both catalysts.
Publikováno v:
Catalysis Today. :173-181
The application of Cr-free Cu-based catalysts in ester hydrogenolysis is a modern environmentally-friendly research approach. The comprehensive study of four supported Cu-based catalysts was performed using 8 wt% of Cu loaded on Al2O3, ZnO, TiO2 and
Autor:
Mahashanon Arumugam, Oleg Kikhtyanin, Amin Osatiashtiani, Veronika Kyselová, Vlastimil Fila, Iva Paterova, Ka-Lun Wong, David Kubička
Publikováno v:
Sustainable Energy & Fuels.
Potassium modified acid–base bifunctionalized MgAl-SBA-15 for mild aldol condensation of furfural and acetone to high-quality jet-fuel range or chemical intermediates.
Autor:
Lada Dubnová, Magdalena Zvolská, Jaroslav Kocík, David Kubička, Miloslav Pouzar, Lucie Smoláková, Libor Čapek, Oleg Kikhtyanin
Publikováno v:
Catalysis Today. 379:181-191
The manuscript describes the key aspects of Zn-Al mixed oxides prepared by different methods (the so-called urea method and co-precipitation methods using either NaOH/Na2CO3 alkaline solution or solution of NaOH) affording high conversion and selecti