Szczegóły publikacji
Opis bibliograficzny
Quantification of hydrogen excess adsorption in silica aerogels and sandstone using high-pressure NMR $T_{2}$ relaxation / Karol M. DĄBROWSKI // ACS Omega [Dokument elektroniczny]. - Czasopismo elektroniczne ; ISSN 2470-1343 . — 2026 — vol. 11 iss. 28, s. 42937–42945. — Wymagania systemowe: Adobe Reader. — Bibliogr. s. 42944-42945, Abstr. — Publikacja dostępna online od: 2026-07-09
Autor
Dane bibliometryczne
| ID BaDAP | 169372 |
|---|---|
| Data dodania do BaDAP | 2026-09-14 |
| Tekst źródłowy | URL |
| DOI | 10.1021/acsomega.6c06070 |
| Rok publikacji | 2026 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Creative Commons | |
| Czasopismo/seria | ACS Omega |
Abstract
In this study, high-pressure NMR T2 relaxation is used to determine excess adsorption of hydrogen in two silica aerogel powders (hydrophilic and hydrophobic) and a Berea sandstone core over the range 1-350 bar. Hydrogen uptake is defined in terms of Gibbs excess adsorption, ensuring consistency with volumetric adsorption measurements at high pressure. The method incorporates calibration of NMR signal intensity using free-gas reference measurements and an independent calibration curve relating signal amplitude to gas volume. The hydrophilic aerogel exhibits the highest excess adsorption across the full pressure range, while the Berea shows intermediate behavior, exceeding the hydrophobic aerogel When normalized by mass, both aerogels demonstrate adsorption capacities orders of magnitude higher than the sandstone. These results confirm that T2-resolved NMR can provide a nondestructive method for quantifying excess hydrogen adsorption in porous media and highlight the influence of pore structure and surface chemistry on high-pressure hydrogen storage performance.
