Alkali metal cation effects on hydrogen uptake and binding in metal-organic frameworks

Karen L. Mulfort; Joseph T. Hupp

doi:10.1021/ic800700h

Alkali metal cation effects on hydrogen uptake and binding in metal-organic frameworks

Karen L. Mulfort, Joseph T. Hupp

Chemistry

Research output: Contribution to journal › Article › peer-review

158 Scopus citations

Abstract

A 2-fold interwoven metal-organic framework has been chemically reduced and doped with Li⁺, Na⁺, and K⁺. At low pressures and temperatures, the reduced and doped materials exhibit enhanced H₂ uptake-up to 65% higher than for the neutral framework. Notably, at similar doping levels, H₂ binding is strongest with Li⁺ and decreases as Li⁺ > Na⁺ > K⁺. However, the uptake increases in the opposite order. We attribute the behavior to structural changes accompanying framework reduction.

Original language	English (US)
Pages (from-to)	7936-7938
Number of pages	3
Journal	Inorganic chemistry
Volume	47
Issue number	18
DOIs	https://doi.org/10.1021/ic800700h
State	Published - Sep 15 2008

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Inorganic Chemistry

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abstract = "A 2-fold interwoven metal-organic framework has been chemically reduced and doped with Li+, Na+, and K+. At low pressures and temperatures, the reduced and doped materials exhibit enhanced H2 uptake-up to 65% higher than for the neutral framework. Notably, at similar doping levels, H2 binding is strongest with Li+ and decreases as Li+ > Na+ > K+. However, the uptake increases in the opposite order. We attribute the behavior to structural changes accompanying framework reduction.",

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AB - A 2-fold interwoven metal-organic framework has been chemically reduced and doped with Li+, Na+, and K+. At low pressures and temperatures, the reduced and doped materials exhibit enhanced H2 uptake-up to 65% higher than for the neutral framework. Notably, at similar doping levels, H2 binding is strongest with Li+ and decreases as Li+ > Na+ > K+. However, the uptake increases in the opposite order. We attribute the behavior to structural changes accompanying framework reduction.

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Alkali metal cation effects on hydrogen uptake and binding in metal-organic frameworks

Abstract

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