Zobrazeno 1 - 10
of 27
pro vyhledávání: '"Radostina Ivanova"'
Autor:
Tanya Tsoncheva, Gloria Issa, Radostina Ivanova, Momtchil Dimitrov, Daniela Kovacheva, Genoveva Atanasova, Jiří Henych
Publikováno v:
Symmetry, Vol 14, Iss 4, p 751 (2022)
This study is focused on the design control of Cu–Zr–Ti oxide composites by the variation of the Zr/Ti ratio and the copper deposition procedure used. For the first time, these ternary composites were obtained by a combination of template-assiste
Externí odkaz:
https://doaj.org/article/05cc78b0e08142d7891f769e56010ef6
Autor:
Tanya Tsoncheva, Radostina Ivanova, Nikolay Velinov, Daniela Kovacheva, Ivanka Spassova, Daniela Karashanova, Nartzislav Petrov
Publikováno v:
Symmetry, Vol 13, Iss 8, p 1532 (2021)
Carbon foams with different surface functionality and tailored texture characteristics were prepared from mixtures containing coal tar pitch and furfural in different proportions. The obtained materials were used as a host matrix for the preparation
Externí odkaz:
https://doaj.org/article/1b8568294b154248975b95aecb33b4d5
Autor:
Gloria Issa, Momtchil Dimitrov, Radostina Ivanova, Martin Kormunda, Daniela Kovacheva, Tanya Tsoncheva
Publikováno v:
Reaction Kinetics, Mechanisms and Catalysis. 135:105-121
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c4cf3df71fcbb276ac53f0ab1c7cd461
https://doi.org/10.1007/s11144-021-02135-0
https://doi.org/10.1007/s11144-021-02135-0
Autor:
Tanya Tsoncheva, Consolato Rosmini, Mihail Mihaylov, Jiří Henych, Kristina Chakarova, Nikolay Velinov, Daniela Kovacheva, Zuzana Němečková, Martin Kormunda, Radostina Ivanova, Ivanka Spassova, Konstantin Hadjiivanov
Publikováno v:
ACS Applied Materials & Interfaces. 14:873-890
Nickel-decorated mesoporous cerium-iron oxide composites were synthesized by a combination of incipient wetness impregnation and template-assisted hydrothermal techniques. The effects of the Fe/Ce ratio and the calcination temperature of cerium-iron
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cefc22389c3e1882f329dae275851ceb
https://doi.org/10.1021/acsami.1c19584
https://doi.org/10.1021/acsami.1c19584
Autor:
Tanya Tsoncheva, Daniela Paneva, Ivanka Spassova, Nikolay Velinov, Daniela Kovacheva, Momtchil Dimotrov, Radostina Ivanova, Boyko Tsyntsarski
The current investigation is focused on the preparation of activated carbons from biomass waste such as cherry stones, walnut shells and mixture of both precursors in different ratio. Their application as a host matrix of zinc ferrite nanoparticles w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______9626::898d963f90b9189e46318ad8c954e044
https://hdl.handle.net/20.500.12641/34494
https://hdl.handle.net/20.500.12641/34494
Autor:
Gloria Issa, Radostina Ivanova, Momtchil Dimitrov, Danielav Kovacheva, Tanya Hristova-Tsoncheva
Publikováno v:
SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fc5f3106e4117a8c56ff4bcdd0abdbf4
https://doi.org/10.5593/sgem2021/5.1/s20.021
https://doi.org/10.5593/sgem2021/5.1/s20.021
Synthesis, Mössbauer study and catalytic properties of Cu-Ni-Fe- oxide/nitride mixed-phase materials
Autor:
Radostina Ivanova, Tanya Petrova, Nikolay Velinov, A. Eliyas, Tanya Tsoncheva, Daniela Kovacheva, Ivan Mitov
Publikováno v:
Hyperfine Interactions. 242
Materials with cation ratio Cu:Ni:Fe = 0.5:0.5:2 were prepared by sol-gel auto-combustion technique using corresponding metal nitrates and citric acid as complexating/fuel agent and ammonia for pH adjustment. For comparison, one sample was synthesise
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1807de421befb1725eddd1e492937b06
https://doi.org/10.1007/s10751-021-01742-6
https://doi.org/10.1007/s10751-021-01742-6
Autor:
Radostina Ivanova, Daniela Karashanova, Nartzislav Petrov, Tanya Tsoncheva, Nikolay Velinov, Daniela Kovacheva, Ivanka Spassova
Publikováno v:
Symmetry
Volume 13
Issue 8
Symmetry, Vol 13, Iss 1532, p 1532 (2021)
Volume 13
Issue 8
Symmetry, Vol 13, Iss 1532, p 1532 (2021)
Carbon foams with different surface functionality and tailored texture characteristics were prepared from mixtures containing coal tar pitch and furfural in different proportions. The obtained materials were used as a host matrix for the preparation
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2371efff785ff09b83065ec5863c7a62
https://hdl.handle.net/20.500.12641/35918
https://hdl.handle.net/20.500.12641/35918
Autor:
Boiko Tsyntsarski, Tanya Tsoncheva, Ivanka Spassova, Nikolay Velinov, Ivan Mitov, Daniela Paneva, B. Georgieva, Momtchil Dimitrov, Radostina Ivanova, Daniela Karashanova, Daniela Kovacheva, Nartzislav Petrov, Gloria Issa
Publikováno v:
Microporous and Mesoporous Materials. 285:96-104
This study is aimed at the development of intelligent approach for clean energy production via valorization of industrial waste by-products. The proposed scheme is based on the preparation of activated carbon based catalysts for methanol decompositio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ee4cdc54737ef7d2341919f5690da039
https://doi.org/10.1016/j.micromeso.2019.04.051
https://doi.org/10.1016/j.micromeso.2019.04.051
Autor:
Daniela Paneva, Nikolay Velinov, Daniela Kovacheva, Radostina Ivanova, Boiko Tsyntsarski, Tanya Tsoncheva, Nartzislav Petrov, Ivanka Spassova
Publikováno v:
Reaction Kinetics, Mechanisms and Catalysis. 127:691-703
High quality activated carbon was prepared using by-products from the pyrolysis of low rank coals as a precursor. The obtained carbon material was applied as a host matrix of nanosized MFe2O4 ferrites (M = Ni, Cu or Zn). XRD, Mossbauer and TPR analys
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7907ba6132197d5c6142707299ba252f
https://doi.org/10.1007/s11144-019-01596-8
https://doi.org/10.1007/s11144-019-01596-8