Zobrazeno 1 - 10
of 67
pro vyhledávání: '"Václav Slovák"'
The effect of pyrolysis heating rate on the mesoporosity of Pluronic F-127 templated carbon xerogels
Autor:
Eva Kinnertová, Tomáš Zelenka, Gabriela Zelenková, Lucie Kořená, Václav Slovák, Miroslav Almáši
Publikováno v:
Carbon Trends, Vol 17, Iss , Pp 100401- (2024)
This study explored the impact of pyrolysis heating rates ranging from 1 to 20 K min−1 (final temperature 500 °C) on the porosity of resorcinol-formaldehyde based carbonaceous xerogels soft-templated with Pluronic F-127. We primarily utilized ther
Externí odkaz:
https://doaj.org/article/9c7e4a04d7a448ea9d21a5582c3d64c8
Publikováno v:
Chemical Engineering Journal Advances, Vol 17, Iss , Pp 100587- (2024)
The present study compares the kinetics and thermodynamics of the pyrolysis process of coffee and tea waste with respect to their physicochemical properties to analyze their potential as an energy and carbon source. Coffee and tea waste exhibit a pro
Externí odkaz:
https://doaj.org/article/fdf90e76e9034f30ae1c7147070c2eda
Autor:
Bára Komárková, Petra Ecorchard, Monika Motlochová, Václav Slovák, Xénia Vislocká, Darina Smržová, Martin Kormunda, Petr Bezdička, Karol Lušpai, Miriama Šimunková, Dana Dvoranová, Michaela Šrámová Slušná, Lenka Belháčová, Jan Šubrt
Publikováno v:
Arabian Journal of Chemistry, Vol 15, Iss 6, Pp 103808- (2022)
The aim of this study was to explore the influence of various n-propylamines (mono, di, and tri) and tert-butylamine on the properties of prepared peroxo-titanates and annealed TiO2. Detailed structural characterization (SEM, TEM with EDX, XRD) confi
Externí odkaz:
https://doaj.org/article/26517ee55abe4afd847c48cf6097b690
Publikováno v:
Materials, Vol 15, Iss 24, p 9021 (2022)
The porosity of differently wetted carbonaceous material with disordered mesoporosity was investigated using low-field 1H NMR relaxometry. Spin–spin relaxation (relaxation time T2) was measured using the CPMG pulse sequence. We present a non-linear
Externí odkaz:
https://doaj.org/article/f150f7e4f2b24a0b8f098381ebfe9f7f
Publikováno v:
Polymers, Vol 14, Iss 8, p 1621 (2022)
Cellulose is a renewable resource for the production of advanced carbonaceous materials for various applications. In addition to direct carbonization, attention has recently been paid to the preparation of porous carbons from liquid cellulose-based p
Externí odkaz:
https://doaj.org/article/6ce44f837c6749c4b8ba24deee6cca3b
Publikováno v:
Gels, Vol 8, Iss 1, p 8 (2021)
Porous carbons, originated from resorcinol-formaldehyde (RF) gels, show high application potential. However, the kinetics and mechanism of RF condensation are still not well described. In this work, different methods (dynamic light scattering–DLS,
Externí odkaz:
https://doaj.org/article/ddc353422816445c95d0445893943a8e
Autor:
Safa Benjedim, Luis A. Romero-Cano, Hesham Hamad, Esther Bailón-García, Václav Slovák, Francisco Carrasco-Marín, Agustín F. Pérez-Cadenas
Publikováno v:
Materials, Vol 14, Iss 20, p 6134 (2021)
In this study, two alternative synthesis routes for magnetic adsorbents were evaluated to remove Pb(II) and Cd(II) in an aqueous solution. First, activated carbon was prepared from argan shells (C). One portion was doped with magnetite (Fe3O4+C) and
Externí odkaz:
https://doaj.org/article/e1ed9cb4f8ee4cbfb80ea01a99cedb5e
Autor:
Václav Slovák
Publikováno v:
Opera slavica, Vol 27, Iss 2 (2017)
Externí odkaz:
https://doaj.org/article/7a447d8f6cd341e290d3982cb935e5ca
Autor:
Václav Slovák
Publikováno v:
Opera slavica, Vol 27, Iss 2 (2017)
V článku se pojednává o větných členech, které jsou tradičně českými lingvisty řazeny k neshodným přívlastkům, ačkoliv některé jejich vlastnosti jsou typické pro jiné větné členy, nejčastěji pro předmět či příslovečn
Externí odkaz:
https://doaj.org/article/55e15f7c3dfb468681867f512c50e345