Studying the adsorption mechanism of hydrogen on the carbon based adsorbents for storage purposes

Ali Qajar, Maryam Peer, Ramakrishnan Rajagopalan, Henry C. Foley

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

Abstract

Hydrogen adsorption on carbon based adsorbents was studied via synthesizing modified version of carbons by incorporating Boron and other heteroatoms. Presence of heteroatoms changed force field energy in the pores and the interaction energy distribution between H 2 molecules and the adsorbent surface. At room temperature carbon adsorbents are believed to be able to adsorb H 2 with 9 KJ/mol. Theoretically, incorporation of boron can increased with value to 12 KJ/mol. This changes is attributed to the electon deficiency of boron. XRD, XPS and TEM techniques were utilized to characterize the synthesized materials. XPS confirmed incorporation of ∼ 17 (atomic)% boron in carbon structure. A sample with 700 m 2/g surface area and ∼12 KJ/mol was synthesized. Besides, presence of turbostratic regions was verified by XRD patterns and TEM images.

Original languageEnglish (US)
Title of host publication11AIChE - 2011 AIChE Annual Meeting, Conference Proceedings
StatePublished - Dec 1 2011
Event2011 AIChE Annual Meeting, 11AIChE - Minneapolis, MN, United States
Duration: Oct 16 2011Oct 21 2011

Other

Other2011 AIChE Annual Meeting, 11AIChE
CountryUnited States
CityMinneapolis, MN
Period10/16/1110/21/11

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)

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    Qajar, A., Peer, M., Rajagopalan, R., & Foley, H. C. (2011). Studying the adsorption mechanism of hydrogen on the carbon based adsorbents for storage purposes. In 11AIChE - 2011 AIChE Annual Meeting, Conference Proceedings