High performance of Fe-K oxide catalysts for dehydrogenation of ethylbenzene to styrene with an aid of ppm-order Pd

Ryo Watanabe*, Taito Hayashi, Yasushi Sekine, Masahiko Matsukata, Eiichi Kikuchi

*この研究の対応する著者

研究成果: Conference contribution

抄録

The role of palladium on the Fe-K catalyst empirically was studied by use of a periodical pulse technique from a mechanistic point of view. Styrene was formed via either dehydrogenation or oxidative dehydrogenation. The latter reaction was faster than the former, and it proceeded by consuming the surface lattice oxygen in the catalyst. The lattice oxygen was subsequently supplied from steam that is commonly believed to act as the diluent to reduce the partial pressure of styrene, known as a favorable effect to shift the equilibrium of volume-expanding reactions in a thermodynamic sense. Palladium added to the Fe-K oxide catalysts enhanced the rate of regeneration (supplying) of the lattice oxygen, although it hardly changed the rate of dehydrogenation of ethylbenzene or consumption of surface lattice O2 anions. Water molecule (steam) worked as a diluent and as a reactant to form hydrogen and lattice oxygen. This is an abstract of a paper presented at the 17th Annual Saudi-Japanese Symposium on Catalysts in Petroleum Refining and Petrochemicals 2007 (Dhahran, Saudi Arabia 11/11-12/2007).

本文言語English
ホスト出版物のタイトルKing Fahd University of Petroleum and Minerals - 17th Annual Saudi-Japanese Symposium on Catalysts in Petroleum Refining and Petrochemicals 2007
ページ112-120
ページ数9
出版ステータスPublished - 2007
イベントKing Fahd University of Petroleum and Minerals - 17th Annual Saudi-Japanese Symposium on Catalysts in Petroleum Refining and Petrochemicals 2007 - Dhahran, Saudi Arabia
継続期間: 2007 11月 112007 11月 12

出版物シリーズ

名前King Fahd University of Petroleum and Minerals, Research Institute - Annual Catalysts in Petroleum Refining and Petrochemicals Symposium Papers

Conference

ConferenceKing Fahd University of Petroleum and Minerals - 17th Annual Saudi-Japanese Symposium on Catalysts in Petroleum Refining and Petrochemicals 2007
国/地域Saudi Arabia
CityDhahran
Period07/11/1107/11/12

ASJC Scopus subject areas

  • 触媒
  • 化学 (全般)
  • 燃料技術
  • エネルギー工学および電力技術

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