Recovery of Useful Chemicals from Paper Sludge-Derived Tar by Catalytic Partial Oxidization over Zirconia-Supporting Iron Oxide Catalysts in Steam Atmosphere

• Liu Baohua

  Division of Chemical Process Engineering, Graduate School of Engineering, Hokkaido University

• Tago Teruoki

  Division of Chemical Process Engineering, Graduate School of Engineering, Hokkaido University

• Fumoto Eri

  Division of Chemical Process Engineering, Graduate School of Engineering, Hokkaido University

• Hayashi Jun-ichirou

  Center for Advanced Research of Energy Conversion Materials, Hokkaido University

• Masuda Takao

  Division of Chemical Process Engineering, Graduate School of Engineering, Hokkaido University

Abstract

To develop a method for converting paper sludge-derived tar to useful petroleum-related chemicals, the catalytic cracking of the tar over zirconia-supporting iron oxide catalysts (ZrO₂/FeO_X catalyst) in a steam atmosphere was examined. Useful aromatics such as toluene, ethylbenzene, and styrene are included in the tar at compositions of approximately 63% with the remaining 37% being unknown components. By applying the ZrO₂/FeO_X catalyst, the unknown components were effectively decomposed without decomposing the useful chemicals existing in the tar, and the concentrations of unknown components were decreased from 37 to 11%. Moreover, acetone and phenol were newly produced. The lattice oxygen of the FeO_X was the active site for the catalytic decomposition of the unknown components in the tar, and the ZrO₂ on FeO_X had activity for decomposing H₂O molecules, thereby yielding active oxygen species. The oxygen active species spilled over on the FeO_X surface to regenerate the oxygen defects formed during the reaction. Accordingly, the catalytic activity and stability were due to the consumption and regeneration of the lattice oxygen.

Journal

• JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

  JOURNAL OF CHEMICAL ENGINEERING OF JAPAN 41 (5), 369-373, 2008

  The Society of Chemical Engineers, Japan

Keywords

• Wood Biomass
• Paper Sludge
• De-inking Paper Sludge
• Zirconia-Supporting Iron Oxide Catalyst

Details

• CRID: 1390282679544229504
• NII Article ID: 10021110253
• NII Book ID: AA00709658
• DOI: 10.1252/jcej.07we281
• ISSN: 18811299
• ISSN: 00219592
• NDL BIB ID: 9498275
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I9498275
• Web Site: http://www.jstage.jst.go.jp/article/jcej/41/5/41_07WE281/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed