Publication
Title
Enabling hydrate-based methane storage under mild operating conditions by periodic mesoporous organosilica nanotubes
Author
Abstract
Biomethane is a renewable natural gas substitute produced from biogas. Storage of this sustainable energy vector in confined clathrate hydrates, encapsulated in the pores of a host material, is a highly promising avenue to improve storage capacity and energy efficiency. Herein, a new type of periodic mesoporous organosilica (PMO) nanotubes, referred to as hollow ring PMO (HR-PMO), capable of promoting methane clathrate hydrate formation under mild working conditions (273 K, 3.5 MPa) and at high water loading (5.1 g water/g HR-PMO) is reported. Gravimetric uptake measurements reveal a steep single-stepped isotherm and a noticeably high methane storage capacity (0.55 g methane/g HR-PMO; 0.11 g methane/g water at 3.5 MPa). The large working capacity throughout consecutive pressure-induced clathrate hydrate formationdissociation cycles demonstrates the material's excellent recyclability (97% preservation of capacity). Supported by ex situ cryo-electron tomography and x-ray diffraction, HR-PMO nanotubes are hypothesized to promote clathrate hydrate nucleation and growth by distribution and confinement of water in the mesopores of their outer wall, along the central channels of the nanotubes and on the external nanotube surface. These findings showcase the potential for application of organosilica materials with hierarchical and interconnected pore systems for pressure-based storage of biomethane in confined clathrate hydrates.
Language
English
Source (journal)
Heliyon. - London, 2015, currens
Publication
London : Elsevier , 2023
ISSN
2405-8440
DOI
10.1016/J.HELIYON.2023.E17662
Volume/pages
9 :7 (2023) , p. 1-14
Article Reference
e17662
ISI
001056264100001
Pubmed ID
37449178
Medium
E-only publicatie
Full text (Publisher's DOI)
Full text (open access)
UAntwerpen
Faculty/Department
Research group
Project info
Artificial clathrates for safe storage, transport and delivery of hydrogen (ARCLATH).
Artificial clathrates for safe storage, transport and delivery of hydrogen (ARCLATH).
Artificial clathrates for safe storage, transport and delivery of hydrogen (ARCLATH).
Artificial clathrates for safe storage, transport and delivery of hydrogen II (ARCLATH II).
Spectral electron tomography as a quantitative technique to investigate functional nanomaterials.
EUSMI: European infrastructure for spectroscopy, scattering and imaging of soft matter
European infrastructure for spectroscopy, scattering and imaging of soft matteer (EUSMI).
3D Structure of nanomaterials under realistic conditions (REALNANO).
Publication type
Subject
Affiliation
Publications with a UAntwerp address
External links
Web of Science
Record
Identifier
Creation 02.10.2023
Last edited 25.04.2024
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