Search Results - "Momtchil Dimitrov"

Mesoporous Silica with an Alveolar Construction Obtained by Eco-Friendly Treatment of Rice Husks by Popova, Margarita, Mitova, Violeta, Dimitrov, Momtchil, Rosmini, Consolato, Tsacheva, Ivelina, Shestakova, Pavletta, Karashanova, Daniela, Karadjova, Irina, Koseva, Neli

“…The high silicon content in rice plant waste, specifically rice husks, makes this waste by-product attractive for the extraction and valorization of silicon…”
Get full text

Correction: Popova et al. Ni-Cu and Ni-Co-Modified Fly Ash Zeolite Catalysts for Hydrodeoxygenation of Levulinic Acid to γ-Valerolactone. Molecules 2024, 29 , 99 by Popova, Margarita, Dimitrov, Momtchil, Boycheva, Silviya, Dimitrov, Ivan, Ublekov, Filip, Koseva, Neli, Atanasova, Genoveva, Karashanova, Daniela, Szegedi, Ágnes

“…[...]…”
Get full text

Ni-Cu and Ni-Co-Modified Fly Ash Zeolite Catalysts for Hydrodeoxygenation of Levulinic Acid to γ-Valerolactone by Popova, Margarita, Dimitrov, Momtchil, Boycheva, Silviya, Dimitrov, Ivan, Ublekov, Filip, Koseva, Neli, Atanasova, Genoveva, Karashanova, Daniela, Szegedi, Ágnes

“…Monometallic (Ni, Co, Cu) and bimetallic (Ni-Co, Ni-Cu) 10-20 wt.% metal containing catalysts supported on fly ash zeolite were prepared by post-synthesis…”
Get full text

Low-Temperature Toluene Oxidation on Fe-Containing Modified SBA-15 Materials by Trendafilova, Ivalina, Ojeda, Manuel, Andresen, John M, Ristić, Alenka, Dimitrov, Momtchil, Tušar, Nataša Novak, Atanasova, Genoveva, Popova, Margarita

“…Transition metals as catalysts for total VOC oxidation at low temperatures (150-280 °C) are a big challenge nowadays. Therefore, iron-modified SBA-15,…”
Get full text

Multi-Analytical Analysis of Decorative Color Plasters from the Thracian Tomb near Alexandrovo, Bulgaria by Georgi Avdeev, Rositsa Kukeva, Denitsa Yancheva, Valentin Mihailov, Vani Tankova, Momtchil Dimitrov, Georgi Nekhrizov, Radostina Stoyanova, Bistra Stamboliyska

“…In the present contribution, we report the results from a study on the ancient technology used to create decorative color plasters in the Thracian tomb near…”
Get full text

CO2 Hydrogenation to Renewable Methane on Ni/Ru Modified ZSM-5 Zeolites: The Role of the Preparation Procedure by Margarita Popova, Manuela Oykova, Momtchil Dimitrov, Daniela Karashanova, Daniela Kovacheva, Genoveva Atanasova, Ágnes Szegedi

“…Mono- and bimetallic Ni- and Ru-modified micro-mesoporous ZSM-5 catalysts were prepared by wet impregnation. The influence of the Ni content, the addition of…”
Get full text

Design Control of Copper-Doped Titania–Zirconia Catalysts for Methanol Decomposition and Total Oxidation of Ethyl Acetate by Tsoncheva, Tanya, Issa, Gloria, Ivanova, Radostina, Dimitrov, Momtchil, Kovacheva, Daniela, Atanasova, Genoveva, Henych, Jiří

“…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…”
Get full text

Ni0.5M0.5Fe2O4 (M = Cu, Zn) Ferrites Hosted in Nanoporous Carbon from Waste Materials as Catalysts for Hydrogen Production by Tsoncheva, Tanya, Spassova, Ivanka, Issa, Gloria, Ivanova, Radostina, Kovacheva, Daniela, Paneva, Daniela, Karashanova, Daniela, Velinov, Nikolay, Tsyntsarski, Boiko, Georgieva, Biliana, Dimitrov, Momtchil, Petrov, Nartzislav

“…This work is focused on the preparation of Ni 0.5 M 0.5 Fe 2 O 4 mixed ferrites (M = Zn or Cu), supported on nanoporous carbons materials. The carbon supports…”
Get full text

Mesoporous Ce–Fe–Ni nanocomposites encapsulated in carbon-nanofibers: Synthesis, characterization and catalytic behavior in oxygen evolution reaction by Rosmini, Consolato, Tsoncheva, Tanya, Kovatcheva, Daniela, Velinov, Nikolay, Kolev, Hristo, Karashanova, Daniela, Dimitrov, Momtchil, Tsyntsarski, Boyko, Sebastián, David, Lázaro, María Jesús

“…Ceria-iron oxide mesoporous materials with Fe:Ce molar ratio of 5:5 and 9:1 were synthesized by hydrothermal method using CTAB as a template and subsequently…”
Get full text

Unveiling the synergistic effects of pH and Sn content for tuning the catalytic performance of Ni0/NixSny intermetallic compounds dispersed on Ce-Zr mixed oxides in the aqueous phase reforming of ethylene glycol by Rosmini, Consolato, Urrea, Monica Pazos, Tusini, Enrico, Indris, Sylvio, Kovacheva, Daniela, Karashanova, Daniela, Kolev, Hristo, Zimina, Anna, Grunwaldt, Jan-Dierk, Rønning, Magnus, Dimitrov, Momtchil, Popova, Margarita

“…The product distribution in aqueous phase reforming (APR) of polyols is closely tied to the catalytically induced feed cleavage mechanism. Strategic variations…”
Get full text

Efficient solid acid catalysts based on sulfated tin oxides for liquid phase esterification of levulinic acid with ethanol by Popova, Margarita, Shestakova, Pavletta, Lazarova, Hristina, Dimitrov, Momtchil, Kovacheva, Daniela, Szegedi, Agnes, Mali, Gregor, Dasireddy, Venkata, Likozar, Blaž, Wilde, Nicole, Gläser, Roger

“…[Display omitted] •New SO42−/SnO2 catalysts were prepared by hydrothermal synthesis at different temperatures in the presence or absence of a template.•The…”
Get full text

Formation of Catalytic Active Sites in Hydrothermally Obtained Binary Ceria–Iron Oxides: Composition and Preparation Effects by Tsoncheva, Tanya, Rosmini, Consolato, Dimitrov, Momtchil, Issa, Gloria, Henych, Jiri, Němečková, Zuzana, Kovacheva, Daniela, Velinov, Nikolay, Atanasova, Genoveva, Spassova, Ivanka

“…A series of mesoporous cerium–iron binary oxides was prepared by a hydrothermal technique using CTAB as a template. The influence of the Fe/Ce ratio and the…”
Get full text

Effect of preparation procedure on the formation of nanostructured ceria–zirconia mixed oxide catalysts for ethyl acetate oxidation: Homogeneous precipitation with urea vs template-assisted hydrothermal synthesis by Tsoncheva, Tanya, Ivanova, Radostina, Henych, Jiri, Dimitrov, Momtchil, Kormunda, Martin, Kovacheva, Daniela, Scotti, Nicola, Santo, Vladimiro Dal, Štengl, Vaclav

“…[Display omitted] •Homogeneous precipitation with urea vs template-assisted hydrothermal method.•Control of texture, structure, acidic and redox properties by…”
Get full text

Mesoporous copper-ceria-titania ternary oxides as catalysts for environmental protection: Impact of Ce/Ti ratio and preparation procedure by Tsoncheva, Tanya, Mileva, Alexandra, Issa, Gloria, Henych, Jiří, Tolasz, Jakub, Dimitrov, Momtchil, Kovacheva, Daniela, Atanasova, Genoveva, Štengl, Vaclav

“…[Display omitted] •CuO-CeO2-TiO2 catalyst with superior activity in VOCs elimination and methanol decomposition.•Finely dispersed CuO and “conjugated” Ti-Ce-Cu…”
Get full text

Mixed oxides of cerium and manganese as catalysts for total oxidation of ethyl acetate: effect of preparation procedure by Issa, Gloria, Dimitrov, Momtchil, Ivanova, Radostina, Kormunda, Martin, Kovacheva, Daniela, Tsoncheva, Tanya

“…The microstructure of manganese and cerium oxide bi-component materials with different Ce/Mn ratio, obtained by co-precipitation and template assisted…”
Get full text

NixZn1-xFe2O4 modified activated carbons from industrial waste as catalysts for hydrogen production by Tsoncheva, Tanya, Tsyntsarski, Boiko, Ivanova, Radostina, Spassova, Ivanka, Kovacheva, Daniela, Issa, Gloria, Paneva, Daniela, Karashanova, Daniela, Dimitrov, Momtchil, Georgieva, Biliana, Velinov, Nikolay, Mitov, Ivan, Petrov, Nartzislav

“…This study is aimed at the development of intelligent approach for clean energy production via valorization of industrial waste by-products. The proposed…”
Get full text

Catalytic VOCs elimination over copper and cerium oxide modified mesoporous SBA-15 silica by Tsoncheva, Tanya, Issa, Gloria, Blasco, Teresa, Dimitrov, Momtchil, Popova, Margarita, Hernández, Selene, Kovacheva, Daniela, Atanasova, Genoveva, Nieto, José M. López

“…[Display omitted] ► The mode of copper–ceria interaction regulates catalytic activity. ► Porous silica support controls the interaction between metal oxide…”
Get full text

Stabilization of Candida rugosa lipase on nanosized zirconia-based materials by Guncheva, Maya, Paunova, Krasimira, Dimitrov, Momtchil, Yancheva, Denitsa

“…•Nanosized materials on the basis of zirconia were synthesized and characterized.•Lipase from Candida rugosa (CRL) was immobilized on the novel…”
Get full text

Tetraalkylammonium acetates and tetraalkylammonium tetrafluoroborates as new templates for room-temperature synthesis of mesoporous silica spheres by Guncheva, Maya, Dimitrov, Momtchil, Ossowicz, Paula, Janus, Ewa

“…Six surface active compounds containing: hexadecyltrimethylammonium [HDTMA], dodecyltrimethylammonium [DDTMA] or didecyldimethylammonium [DDA] cation and…”
Get full text

Template-assisted hydrothermally obtained titania-ceria composites and their application as catalysts in ethyl acetate oxidation and methanol decomposition with a potential for sustainable environment protection by Tsoncheva, Tanya, Mileva, Alexandra, Issa, Gloria, Dimitrov, Momtchil, Kovacheva, Daniela, Henych, Jiří, Scotti, Nicola, Kormunda, Martin, Atanasova, Genoveva, Štengl, Vaclav

“…[Display omitted] •Mesoporous CeTi binary oxides prepared by template assisted hydrothermal method.•Textural and structural variation by Ti/Ce and hydrothermal…”
Get full text