Zobrazeno 1 - 10
of 29
pro vyhledávání: '"Romana Velvarská"'
Publikováno v:
Molecules, Vol 25, Iss 21, p 4918 (2020)
Raman spectroscopy was used for the quantitative determination of Mo and W in Mo- and W-supported mesoporous silica (Mo/SBA-15 and W/SBA-15, respectively) and Mo-supported beta zeolite (Mo-BEA). Three Raman quantitative models were developed and opti
Externí odkaz:
https://doaj.org/article/ba67bf6e53a14392988f3f31e0c2e823
Publikováno v:
Molecules, Vol 25, Iss 21, p 4989 (2020)
This study focused on natural materials such as clinoptilolite (CLI), metakaolin (MK), marlstone (MRL) and phonolite (PH). Clinoptilolite is one of the most known and common natural minerals (zeolites) with a unique porous structure, metakaolin is ca
Externí odkaz:
https://doaj.org/article/c2661de5846b445692aee3754e888fd8
Autor:
José Miguel Hidalgo Herrador, Jakub Fratczak, Zdeněk Tišler, Hector de Paz Carmona, Romana Velvarská
Publikováno v:
Molecules, Vol 25, Iss 16, p 3732 (2020)
The use of renewable local raw materials to produce fuels is an important step toward optimal environmentally friendly energy consumption. In addition, the use of these sources together with fossil fuels paves the way to an easier transition from fos
Externí odkaz:
https://doaj.org/article/a86ea726ba594835bd7e8f27a89fe9a1
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
Autor:
Aleš Vráblík, José Miguel Hidalgo Herrador, Radek Černý, Héctor de Paz Carmona, Romana Velvarská
Publikováno v:
Sustainable Energy & Fuels. 5:4955-4964
Nowadays, the co-processing of middle distillates with vegetable oils is well established at an industrial scale. However, it is necessary to utilize waste oils (used cooking oils/animal fats) to obtain second-generation biofuels. The present work st
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bd865ad29ffacabcb65246e2c0bd4e3e
https://doi.org/10.1039/d1se00917f
https://doi.org/10.1039/d1se00917f
Publikováno v:
International Journal of Pavement Research and Technology. 14:459-465
Recently, the modification of bituminous binders is an ongoing trend. However, most current analytical methods are insufficient to characterize bitumen. Generally, standardized laboratory techniques are often time and cost consuming. Moreover, they u
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dd30e9d310fe6c165a734487dcbbd47a
https://doi.org/10.1007/s42947-020-0157-2
https://doi.org/10.1007/s42947-020-0157-2
Publikováno v:
International Journal of Industrial Chemistry. 11:187-194
The standard method (ISO 4264) for determining the cetane index of hydrogenated gas oil is time-consuming and expensive for routine laboratory tests. Conversely, near infrared (NIR) and Raman spectroscopies are high-speed and cost-effective technique
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bb2e3a85059ad7c3e1c992e880f80058
https://doi.org/10.1007/s40090-020-00216-y
https://doi.org/10.1007/s40090-020-00216-y
Autor:
Lenka Skuhrovcová, Héctor de Paz Carmona, Zdeněk Tišler, Eliška Svobodová, Martina Michálková, Kateřina Strejcová, Romana Velvarská, Uliana Akhmetzyanova
Publikováno v:
Molecular Catalysis. 537:112930
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::36d1532d5f0434455540ac798482c287
https://doi.org/10.1016/j.mcat.2023.112930
https://doi.org/10.1016/j.mcat.2023.112930
Autor:
Héctor de Paz Carmona, José Miguel Hidalgo Herrador, Zdeněk Tišler, Jakub Frątczak, Ivana Hradecká, Jaroslav Kocík, Romana Velvarská
Publikováno v:
Catalysts
Volume 11
Issue 9
Catalysts, Vol 11, Iss 1101, p 1101 (2021)
Volume 11
Issue 9
Catalysts, Vol 11, Iss 1101, p 1101 (2021)
Mesityl oxide is standardly used to produce methyl iso butyl ketone but it can be also used to produce other useful compounds. Three catalysts were used for the reaction of the mesityl oxide reduction. They were NiW, NiMo, and CoMo supported on phono
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c5d15cd6f04f69be1fc9c217bf5e700c
Publikováno v:
Spectroscopy Letters. 52:533-540
The oxidation of ethanol to acetaldehyde was previously investigated in a continuous flow bench scale reactor using a zirconium-oxide-supported vanadium catalyst. Products were analyzed by ...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2b138115cbba76cb5f9650bed1225fc2
https://doi.org/10.1080/00387010.2019.1673780
https://doi.org/10.1080/00387010.2019.1673780