Detail publikace

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

Jazyk

en

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.

Dokumenty

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",
  annote="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.",
  address="Elsevier",
  chapter="107447",
  doi="10.1016/j.geoderma.2014.04.018",
  institution="Elsevier",
  number="1",
  volume="230-231",
  year="2014",
  month="october",
  pages="151--160",
  publisher="Elsevier",
  type="journal article in Web of Science"
}