The conversion of hydrogen sulfide into hydrogen and sulfur using a two stage quinone and heterogeneous catalyst cycle

Scott W. Cowley, Jonathan J. Robertson, Elsa Anisa Krisanti, Mark A. Plummer

Research output: Contribution to journalConference articlepeer-review

1 Citation (Scopus)

Abstract

Petroleum and natural gas contain significant amounts of sulfur compounds that are removed as H2S. H2S was converted into hydrogen and sulfur using a two-step process. In the first stage, H2S was reacted with an anthraquinone molecule in a polar solvent to produce a hydroanthroquinone and a sulfur precipitate. In the second stage, the solution containing the hydroquinone was passed through a catalyst bed to regenerate the anthraquinone and produce hydrogen gas. The formation of a paramagnetic diradical anthraquinone species and a HS- anion was thought to be critical in the first step of the reaction sequence. A heterogeneous catalyst was developed for the selective conversion of the hydroanthraquinone back to the anthraquinone and hydrogen, without formation of anthrone or anthranol. This is an abstract of a paper presented at the 231st ACS National Meeting (Atlanta, GA 3/26-30/2006).

Original languageEnglish
JournalACS National Meeting Book of Abstracts
Volume231
Publication statusPublished - 28 Jun 2006
Event231th ACS National Meeting - Atlanta, GA, United States
Duration: 26 Mar 200630 Mar 2006

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