Research Achievements - Original paper -

Separation and recovery of bitumen from oil sand using CO₂-loaded amine solution and ultrasound

Jie Ren, Hirokazu Okawa, Takahiro Kato

Japanese Journal of Applied Physics   64 ( 2 ) 02SP38   2025.02  [Refereed]

Research paper (journal)   Domestic Co-author

CO₂ desorption using ultrasound at low temperature from CO₂ -loaded amine solution under pressure conditions

Jie Ren, Tomoka Fujita, Hirokazu Okawa and Takahiro Kato

Japanese Journal of Applied Physics   63   03SP47-1 - 03SP47-8   2024.02  [Refereed]

Research paper (journal)   Domestic Co-author

Ultrasound-assisted oxidative desulfurization of bitumen and analysis of sulfur forms in a treated bitumen

Wakisaka Y., Okawa H., Kato T.

Japanese Journal of Applied Physics ( Japanese Journal of Applied Physics )  62 ( SJ )   2023.07  [Refereed]

Research paper (journal)   Domestic Co-author

DOI

Elution behavior of mercury in desulfurization gypsum produced in a coal-fired power plant

Dorcas Linda Ernesto Uaciquete, Takahiro Kato, Hirokazu Okawa, Katsuyasu Sugawara, Risehiro Nonaka

Fuel   334   126761-1 - 126761-6   2023  [Refereed]

Research paper (journal)   Domestic Co-author

DOI

Changes in the sulfur forms of subbituminous coals during oxidation with hydrogen peroxide and peracetic acid

Takahiro Kato, Dorcas L.E. Uaciquete, Gai Onodera, Hirokazu Okawa, Katsuyasu Sugawara, Nakorn Worasuwannarak

Fuel   330   125544-1 - 125544-9   2022.08  [Refereed]

Research paper (journal)   International Co-author

DOI

Extraction and oxidative desulfurization of bitumen from oil sand using n-pentane and ultrasound

Yoshitaka Wakisaka, Hirokazu Okawa, Kumi Saigo, Takahiro Kato, and Katsuyasu Sugawara

Japanese Journal of Applied Physics   61   SG8002-1 - SG8002-4   2022.05  [Refereed]

Research paper (journal)   Domestic Co-author

DOI

Synthesis of porous γ-Fe₂O₃ from scorodite synthesized using ultrasound irradiation and evaluation of its battery performance

Yuya Kitamura, Hirokazu Okawa, Kozo Shinoda, Takahiro Kato, and Katsuyasu Sugawara

Japanese Journal of Applied Physics   61   SG1056-1 - SG1056-8   2022.05  [Refereed]

Research paper (journal)   Domestic Co-author

DOI

Utilization of tertiary amine solutions and ultrasound irradiation for CO₂ desorption at low temperature in a CCS process

Hirokazu Okawa, Hiroyasu Ito, Tatsuo Fujiwara, Yuya Kitamura, Takahiro Kato, Katsuyasu Sugawara

Japanese Journal of Applied Physics ( Japanese Journal of Applied Physics )  60 ( SD )   2021.07  [Refereed]

Research paper (journal)   Domestic Co-author

DOI

Preparation of Copper Fine Particles by a Wet Chemical Method

Takahiro Kato, Yuri Takada, Hirokazu Okawa, and Katsuyasu Sugawara

Journal of Chemical Engineering of Japan   54 ( 3 ) 103 - 109   2021.03  [Refereed]

Research paper (journal)   Domestic Co-author

DOI

Release behavior of arsenic, chromium, and copper during heat treatments of CCA-treated wood

Takahiro Kato, Takeshi Hatakeyama, Katsuyasu Sugawara

Journal of Material Cycles and Waste Management ( Journal of Material Cycles and Waste Management )    2021  [Refereed]

Research paper (journal)   Domestic Co-author

DOI

Separation of Trace Magnesium from Metallic Bismuth by Chlorination

Takahiro Kato, Hirokazu Okawa, Katsuyasu Sugawara, Risehiro Nonaka, Masashi Tsuda

Journal of Chemical Engineering of Japan   53 ( 7 ) 366 - 374   2020.07  [Refereed]

Research paper (journal)   Domestic Co-author

DOI

Recovery of Rare Metals from Spent Denitration Catalysts in Coal-Fired Power Plants

Kosuke Sakusabe, Yuuki Mochizuki, Takahiro Kato, Hirokazu Okawa, Katsuyasu Sugawara

Journal of Chemical Engineering of Japan   53 ( 7 ) 351 - 358   2020.07  [Refereed]

Research paper (journal)   Domestic Co-author

DOI

Mercury Forms Contained in Desulfurization Gypsums

Kosuke Sakusabe, Takahiro Kato, Hirokazu Okawa, Katsuyasu Sugawara

Journal of Chemical Engineering of Japan   53 ( 7 ) 359 - 365   2020.07  [Refereed]

Research paper (journal)   Domestic Co-author

DOI

Enhancement of bitumen recovery from the oil sand in an alkaline solution using ultrasound irradiation and carbon dioxide

Hirokazu Okawa, Tomonao Saito, Shohei Yasuda, Youhei Kawamura, Takahiro Kato, Katsuyasu Sugawara, and Tayfun Babadagli

Japanese Journal of Applied Physics   59   SKKD02-1 - SKKD02-4   2020.03  [Refereed]

Research paper (journal)   International Co-author

DOI

Enhancement of desorption amount of carbon dioxide gas from monoethanolamine solution using ultrasound and calcium chloride

Yuya Kitamura, Hirokazu Okawa, Takahiro Kato, and Katsuyasu Sugawara

Japanese Journal of Applied Physics   59   SKKD08-1 - SKKD08-7   2020.03  [Refereed]

Research paper (journal)   Domestic Co-author

DOI

Removal of arsenite from aqueous solutions using ultrasonic irradiation in the presence of a lead electrode

Miyaki Ohta, Hirokazu Okawa, Takahiro Kato, and Katsuyasu Sugawara

Japanese Journal of Applied Physics   59   SKKD01-1 - SKKD01-6   2020.03  [Refereed]

Research paper (journal)   Domestic Co-author

DOI

Preparationof Silver-coated Al-Si Particles by a Polyol Method

Takahiro Kato, Naomichi Itakura and Katsuyasu Sugawara

Journal of Chemical Engineering of Japan   52 ( 12 ) 882 - 888   2019.12  [Refereed]

Research paper (journal)   Domestic Co-author

DOI

Mercury Forms in By-Products from Coal-Fired Power Plant

Kosuke Sakusabe, Takahiro Kato, Hirokazu Okawa and Katsuyasu Sugawara

Journal of Chemical Engineering of Japan   52 ( 11 ) 859 - 865   2019.11  [Refereed]

Research paper (journal)   Domestic Co-author

DOI

Low-Temperature Synthesis of Aluminum Nitride by Addition of Ammonium Chloride

Takahiro Kato and Katsuyasu Sugawara

ACS Omega   4   14714 - 14720   2019.09  [Refereed]

Research paper (journal)   Domestic Co-author

DOI

Removal of Arsenic from a Denitration Catalyst by Reduction Using Methanol as Carbon Source

Takahiro Kato, Kosuke Sakusabe, Yuki Mochizuki, Hirokazu Okawa, KatsuyasuSugawara

Reaction Chemistry & Engineering   4   1208 - 1215   2019.07  [Refereed]

Research paper (journal)   Domestic Co-author

DOI