Physisorption of hydrogen on boron-containing carbon (B/C) material prepared by organoborane precursor

Z. C. Zhang, W. Chen, T. C.Mike Chung

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

This paper discusses the synthesis of boron substituted carbon (B/C) materials by pyrolysis of two organic and polymeric precursors, which are prepared by chloroboration of phenylene acetylene and phenyl diacetylene, respectively. Some of the resulting B/C materials were evaluated in hydrogen physisorption from ambient to low temperatures under various hydrogen pressures. Evidently, through the precursor design it is possible to transform some B atoms in the precursor into B/C material by pyrolysis. Despite the dense structure (without significant porosity by SEM and BET), the B/C material with 1.6 wt% B content shows hydrogen adsorption 0.7 and 2.15 wt% at 25 and -78°C, respectively, under 1300 psi hydrogen pressure. The adsorption-desorption cycles were repeated many times without any detectable change. Apparently, the empty p-orbital in the substituted B atom increases the binding energy of hydrogen to the B/C surface of graphitic platelet, which is reversible by pressure and ambient temperature. copyright The Electrochemical Society.

Original languageEnglish (US)
Title of host publicationHydrogen Production, Transport, and Storage
Pages37-47
Number of pages11
Edition29
DOIs
StatePublished - 2007
Event209th ECS Meeting - Denver, CO, United States
Duration: May 7 2006May 12 2006

Publication series

NameECS Transactions
Number29
Volume2
ISSN (Print)1938-5862
ISSN (Electronic)1938-6737

Other

Other209th ECS Meeting
Country/TerritoryUnited States
CityDenver, CO
Period5/7/065/12/06

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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