Developing efficient catalysts for elimination of ammonia at room temperature for air quality improvement

2021 年度 実績報告書

• 研究課題/領域番号: 19K15363
• 研究機関: 東京都立大学
• 研究代表者: 林 明月 東京都立大学, 都市環境科学研究科, 特任助教 (30813357)
• 研究期間 (年度): 2019-04-01 – 2022-03-31
• キーワード: Au-PVP colloid / Ag catalyst / size effect / ammonia / selective / catalytic oxidaiton / N2 selectivity

研究実績の概要

(1) A water/ethanol soluble Au-PVP colloid was developed as the gold precursor. The prepared Au(-PVP)/Nb2O5 showed high activity for both gas-phase CO oxidation and liquid-phase furfural oxidation. This work provides a more eco-friendly preparation method of highly active Au/solid catalysts.
(2) Ag size/structure was found to play an essentail role in controlling the N2 selectivity and the type of byproduct in NH3-SCO. Ag/MnO2 with Ag particles of 2.4 nm diameter showed the highest density of Ag particles which would be favorable for the formation of N2 and H2O. This work provides a new angle in designing highly active catalysts.
(3) Ag/Al2O3 that showed high catalytic activity and high N2 selectivity for NH3-SCO was developed, and the reaction mechanism was studied in detail.

研究成果

• [雑誌論文] Understanding the distinct effects of Ag nanoparticles and highly dispersed Ag species on N2 selectivity in NH3-SCO reaction (2022)
  • 著者名/発表者名: Haifeng Wang, Toru Murayama*, Mingyue Lin, Norihito Sakaguchi, Masatake Haruta, Hiroki Miura, and Tetsuya Shishido*
  • 雑誌名: ACS Catalysis 巻: 12 ページ: 6108-6118
  • 査読あり
• [雑誌論文] Development of solid acid-supported gold nanoparticle catalysts for air purification at room temperature (2022)
  • 著者名/発表者名: Toru Murayama*, Mingyue Lin
  • 雑誌名: Journal of the Japan Petroleum Institute 巻: 65(2) ページ: 58-66
  • 査読あり / 国際共著
• [雑誌論文] Effect of poly (N-vinylpyrrolidone) ligand on catalytic activities of Au nanoparticles supported on Nb2O5 for CO oxidation and furfural oxidation (2022)
  • 著者名/発表者名: Mingyue Lin*,Chihiro Mochizuki, Tamao Ishida, YingZhang, Masatake Haruta, Toru Murayama*
  • 雑誌名: Catalysis Today
  • DOI: 10.1016/j.cattod.2022.03.034
  • 査読あり / 国際共著
• [雑誌論文] Defective NiO as a Stabilizer for Au Single-Atom Catalysts (2022)
  • 著者名/発表者名: Chihiro Mochizuki, Yusuke Inomata, Shunsaku Yasumura, Mingyue Lin, Ayako Taketoshi, Tetsuo Honma, Norihito Sakaguchi, Masatake Haruta, Ken-ichi Shimizu, Tamao Ishida, and Toru Murayama*
  • 雑誌名: ACS Catalysis 巻: 12, 6149-6158 ページ: 6149-6158
  • 査読あり / 国際共著
• [雑誌論文] Praseodymia-titania mixed oxide supported gold as efficient water gas shift catalyst: modulated by the mixing ratio of oxides (2022)
  • 著者名/発表者名: Weixuan Zhao‡, Junjie Shi‡*, Mingyue Lin, Libo Sun, Huijuan Su, Xun Sun, Toru Murayama, Caixia Qi*
  • 雑誌名: RSC advances 巻: 12 (9) ページ: 5374-5385
  • 査読あり / 国際共著
• [雑誌論文] Ag Size/Structure-dependent effect on low-temperature selective catalytic oxidation of NH3 over Ag/MnO2 (2021)
  • 著者名/発表者名: Haifeng Wang, Mingyue Lin, Toru Murayama*, Shixiang Feng, Masatake Haruta, Hiroki Miura, and Tetsuya Shishido*
  • 雑誌名: ACS Catalysis 巻: 11(14) ページ: 8576-8584
  • 査読あり
• [雑誌論文] Selective catalytic oxidation of ammonia to nitrogen over zeolite-supported Pt-Au catalysts: Effects of alloy formation and acid sites (2021)
  • 著者名/発表者名: Haifeng Wang, Mingyue Lin, Toru Murayama*, Shixiang Feng, Masatake Haruta, Hiroki Miura, Tetsuya Shishido*
  • 雑誌名: Journal of Catalysis 巻: 402 ページ: 101-113
  • 査読あり / 国際共著
• [学会発表] Au-Pt alloy nanoparticles supported on zeolite for the highly efficient removal of ethylene at 0 ℃ (2021)
  • 著者名/発表者名: Mingyue Lin・Haifeng Wang・Hiroki Miura・Tetsuya Shishido・Masatake Haruta・Toru Murayama
  • 学会等名: 第128回触媒討論会
• [学会発表] Highly efficient removal of ethylene at 0 ℃ over Au-Pt/zeolite (2021)
  • 著者名/発表者名: Mingyue Lin・Haifeng Wang・Tetsuya Shishido・ Hiroki Miura・ Masatake Haruta・Toru Murayama
  • 学会等名: 函館大会（第51回石油・石油化学討論会）