Computational exploration of the mechanism of the hydrogenation step of the anthraquinone process for hydrogen peroxide production

Takashi Kamachi, Tatsunobu Ogata, Eiichirou Mori, Katsuhiro Iura, Norikazu Okuda, Masaki Nagata, Kazunari Yoshizawa

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

Hydrogen peroxide is produced commercially by the sequential hydrogenation and oxidation of anthraquinone (AQ) and tetrahydroanthraquinone (THAQ). The hydrogenation of AQ and THAQ on the Pd(111) surface is investigated with periodic density functional theory (DFT) calculations in this work. Dihydrogen is preferentially adsorbed on the top of a Pd atom, and the produced hydrogen atoms are on two neighboring 3-fold hollow fcc positions. The three benzene rings of AQ are located at bridge sites on the Pd(111) surface. The two carbonyl oxygen atoms of AQ and THAQ successively abstract the surface hydrogen atoms to produce anthrahydroquinone (AHQ) and tetrahydroanthrahydroquinone (THAHQ), respectively. The formation of unwanted byproducts, anthrone (AN), tetrahydroanthrone (THAN), oxanthrone (OAN), and tetrahydro-oxanthrone (THOAN), in the hydrogenation step of the AQ process is also studied to consider the suppression of these byproducts.

Original languageEnglish
Pages (from-to)8748-8754
Number of pages7
JournalJournal of Physical Chemistry C
Volume119
Issue number16
DOIs
Publication statusPublished - Apr 23 2015

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Energy(all)
  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films

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