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Title: High-Pressure Hydrogen Adsorption on a Porous Electron-Rich Covalent Organonitridic Framework

Abstract

We report that a porous, electron-rich, covalent, organonitridic framework (PECONF-4) exhibits an unusually high hydrogen uptake at 77 K, relative to its specific surface area. Chahine’s rule, a widely cited heuristic for hydrogen adsorption, sets a maximum adsorptive uptake of 1 wt % hydrogen at 77 K per 500 m 2 of the adsorbent surface area. High-pressure hydrogen adsorption measurements in a Sieverts apparatus showed that PECONF-4 exceeds Chahine’s rule by 50%. The Brunauer–Emmett–Teller (BET) specific surface area of PECONF-4 was measured redundantly with nitrogen, argon, and carbon dioxide and found to be between 569 ± 2 and 676 ± 13 m 2 g –1. Furthermore, hydrogen on PECONF-4 has a high heat of adsorption, in excess of 9 kJ mol –1.

Authors:
 [1]; ORCiD logo [2];  [3];  [2];  [1]; ORCiD logo [3];  [2]
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  2. California Inst. of Technology (CalTech), Pasadena, CA (United States). Dept. of Applied Physics and Materials Science
  3. Lehigh Univ., Bethlehem, PA (United States). Dept. of Chemistry
Publication Date:
Research Org.:
Energy Frontier Research Centers (EFRC) (United States). Energy Frontier Research in Extreme Environments (EFree); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1489890
Alternate Identifier(s):
OSTI ID: 1508779; OSTI ID: 1512584
Report Number(s):
LLNL-JRNL-757742
Journal ID: ISSN 2470-1343; AC52-07NA27344.
Grant/Contract Number:  
SC0001057; AC52-07NA27344
Resource Type:
Journal Article: Published Article
Journal Name:
ACS Omega
Additional Journal Information:
Journal Volume: 4; Journal Issue: 1; Journal ID: ISSN 2470-1343
Publisher:
American Chemical Society (ACS)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; adsorption; distribution function; enthalpy; mass transfer; materials science; mechanical properties; physical and chemical processes; pressure; surface structure; thermal properties; Energy - Hydrogen

Citation Formats

Murialdo, Maxwell, Weadock, Nicholas J., Liu, Yiqun, Ahn, Channing C., Baker, Sarah E., Landskron, Kai, and Fultz, Brent. High-Pressure Hydrogen Adsorption on a Porous Electron-Rich Covalent Organonitridic Framework. United States: N. p., 2019. Web. doi:10.1021/acsomega.8b03206.
Murialdo, Maxwell, Weadock, Nicholas J., Liu, Yiqun, Ahn, Channing C., Baker, Sarah E., Landskron, Kai, & Fultz, Brent. High-Pressure Hydrogen Adsorption on a Porous Electron-Rich Covalent Organonitridic Framework. United States. doi:10.1021/acsomega.8b03206.
Murialdo, Maxwell, Weadock, Nicholas J., Liu, Yiqun, Ahn, Channing C., Baker, Sarah E., Landskron, Kai, and Fultz, Brent. Mon . "High-Pressure Hydrogen Adsorption on a Porous Electron-Rich Covalent Organonitridic Framework". United States. doi:10.1021/acsomega.8b03206.
@article{osti_1489890,
title = {High-Pressure Hydrogen Adsorption on a Porous Electron-Rich Covalent Organonitridic Framework},
author = {Murialdo, Maxwell and Weadock, Nicholas J. and Liu, Yiqun and Ahn, Channing C. and Baker, Sarah E. and Landskron, Kai and Fultz, Brent},
abstractNote = {We report that a porous, electron-rich, covalent, organonitridic framework (PECONF-4) exhibits an unusually high hydrogen uptake at 77 K, relative to its specific surface area. Chahine’s rule, a widely cited heuristic for hydrogen adsorption, sets a maximum adsorptive uptake of 1 wt % hydrogen at 77 K per 500 m2 of the adsorbent surface area. High-pressure hydrogen adsorption measurements in a Sieverts apparatus showed that PECONF-4 exceeds Chahine’s rule by 50%. The Brunauer–Emmett–Teller (BET) specific surface area of PECONF-4 was measured redundantly with nitrogen, argon, and carbon dioxide and found to be between 569 ± 2 and 676 ± 13 m2 g–1. Furthermore, hydrogen on PECONF-4 has a high heat of adsorption, in excess of 9 kJ mol–1.},
doi = {10.1021/acsomega.8b03206},
journal = {ACS Omega},
issn = {2470-1343},
number = 1,
volume = 4,
place = {United States},
year = {2019},
month = {1}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1021/acsomega.8b03206

Citation Metrics:
Cited by: 1 work
Citation information provided by
Web of Science

Figures / Tables:

Figure 1 Figure 1: Dual-Langmuir fit of hydrogen excess adsorption data on PECONF-4 at 77, 87, 253, 273, and 298 K.

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Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.