バイオマス改質と水素生成をともなう低温廃熱回収

• Project/Area Number: 15J07587
• Research Category: Grant-in-Aid for JSPS Fellows
• Allocation Type: Single-year Grants
• Section: 国内
• Research Field: Reaction engineering/Process system
• Research Institution: Tohoku University
• Principal Investigator: 朱 遠征 東北大学, 大学院工学研究科, 特別研究員(DC2)
• Project Period (FY): 2015-04-24 – 2017-03-31
• Project Status: Completed (Fiscal Year 2016)
• Budget Amount: ¥1,900,000 (Direct Cost: ¥1,900,000); Fiscal Year 2016: ¥900,000 (Direct Cost: ¥900,000); Fiscal Year 2015: ¥1,000,000 (Direct Cost: ¥1,000,000)
• Keywords: cerium oxide / oxygen storage capacity / catalyst / nanoparticles

Outline of Annual Research Achievements

Highly Cr-substituted CeO2 nano-catalysts with exposing {111} facets were synthesized using a flow-type reactor. The flow-type reactor realized rapid heating and mixing of reactant solutions, which enabled the synthesis of highly Cr-substituted CeO2 up to 38 mol%. The Cr-substituted CeO2 nano-catalysts showed extremely high oxygen storage capacity. By using the produced CeO2 nano-catalysts, hydrothermal bitumen cracking was performed at 300 and 350 ℃. Bitumen was successfully converted to lighter components including asphaltene without coke formation. Surprisingly, hydrogen was evolved during conversion and the amount of hydrogen gas increased with the amount of Cr substitution. These results clearly suggest that Cr-substituted CeO2 can be used for hydrogen generation from organic waste.

Research Progress Status

28年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

28年度が最終年度であるため、記入しない。

Research Products

• [Journal Article] Green solvent for green materials: a supercritical hydrothermal method and shape-controlled synthesis of Cr-doped CeO2 nanoparticles (2015)
  • Author(s): Yuanzheng Zhu, Seiichi Takami, Gimyeong Seong, Mehdi Dejhosseini, Muhammad Zamir Hossain, Takio Noguchi, Daisuke Hojo, Nobuaki Aoki, Tsutomu Aida, Tadafumi Adschiri
  • Journal Title: Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences Volume: 373 Issue: 2057 Pages: 1-14
  • DOI: 10.1098/rsta.2015.0012
  • Peer Reviewed / Acknowledgement Compliant
• [Presentation] Supercritical hydrothermal synthesis of crystal-face and shape controlled Cr-doped CeO2 nanoparticles with high catalytic activity (2015)
  • Author(s): Yuanzheng Zhu, Seiichi Takami, Gimyeong Seong, Daisuke Hojo, Nobuaki Aoki, Tadafumi Adschiri
  • Organizer: 第15回東北大学多元物質科学研究所研究発表会2015
  • Place of Presentation: 東北大学さくらホール、仙台
  • Year and Date: 2015-12-22
• [Presentation] Supercritical Hydrothermal Synthesis of Facet-Controlled Cr-doped CeO2 Nanoparticles (2015)
  • Author(s): Yuanzheng Zhu, Seiichi Takami, Gimyeong Seong, Daisuke Hojo, Nobuaki Aoki, Tadafumi Adschiri
  • Organizer: 11th International Symposium on Supercritical Fluids Incorporating with Supergreen 2015
  • Place of Presentation: Global Education Center for Engineers (GECE), Seoul national university, Seoul, Korea
  • Year and Date: 2015-10-13
  • Int'l Joint Research
• [Presentation] Shape-Controlled Synthesis of Cr Doped CeO2 Nanoparticles in Sub- and Supercritical Water (2015)
  • Author(s): Yuanzheng Zhu, Seiichi Takami, Daisuke Hojo, Nobuaki Aoki, Tsutomu Aida, Tadafumi Adschiri
  • Organizer: 7th International Conference on Green and Sustainable Chemistry (GSC-7) and 4th JACI/GSC Symposium
  • Place of Presentation: Hitotsubashi Hall, Hitotsubashi University, Tokyo
  • Year and Date: 2015-07-08
  • Int'l Joint Research