Detail publikačního výsledku

Hydration and water holding properties of cross-linked lignite humic acids

CIHLÁŘ, Z.; VOJTOVÁ, L.; CONTE, P.; NASIR, S.; KUČERÍK, J.

Originální název

Hydration and water holding properties of cross-linked lignite humic acids

Anglický název

Hydration and water holding properties of cross-linked lignite humic acids

Druh

Článek WoS

Originální abstrakt

In order to stabilize the structure of lignite humic acids and improve the water holding capacity, we applied formaldehyde cross-linking procedure. By combining the 1H NMR relaxometry and methods of thermal analysis, the kinetics and degree of hydration, water distribution and moisture uptake were investigated. Formaldehyde cross-linking of humic acids influenced mainly their physical properties. The thermo-oxidative stability was decreased due to an increase in pore sizes. Spatial polar groups separation increased moisture uptake at higher relative humidity.

Anglický abstrakt

In order to stabilize the structure of lignite humic acids and improve the water holding capacity, we applied formaldehyde cross-linking procedure. By combining the 1H NMR relaxometry and methods of thermal analysis, the kinetics and degree of hydration, water distribution and moisture uptake were investigated. Formaldehyde cross-linking of humic acids influenced mainly their physical properties. The thermo-oxidative stability was decreased due to an increase in pore sizes. Spatial polar groups separation increased moisture uptake at higher relative humidity.

Klíčová slova

lignite humic acids, cross-linking, hydration, DSC, NMR relaxometry, water molecule bridges

Klíčová slova v angličtině

lignite humic acids, cross-linking, hydration, DSC, NMR relaxometry, water molecule bridges

Autoři

CIHLÁŘ, Z.; VOJTOVÁ, L.; CONTE, P.; NASIR, S.; KUČERÍK, J.

Rok RIV

2015

Vydáno

01.10.2014

Nakladatel

Elsevier

ISSN

0016-7061

Periodikum

Geoderma

Svazek

230-231

Číslo

1

Stát

Nizozemsko

Strany od

151

Strany do

160

Strany počet

10

URL

https://www.sciencedirect.com/science/article/pii/S001670611400175X

BibTex

@article{BUT107447,
  author="Zdeněk {Cihlář} and Lucy {Vojtová} and Pelegrino {Conte} and Saqib {Nasir} and Jiří {Kučerík}",
  title="Hydration and water holding properties of cross-linked lignite humic acids",
  journal="Geoderma",
  year="2014",
  volume="230-231",
  number="1",
  pages="151--160",
  doi="10.1016/j.geoderma.2014.04.018",
  issn="0016-7061",
  url="https://www.sciencedirect.com/science/article/pii/S001670611400175X"
}

Dokumenty

Hydration and water holding properties of cross-linked lignite humic acids