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

Distribution of Sulfur during Solvent Extraction of Coals and Desulfurization of Extracted Product

Katsuyasu Sugawara, Takahiro Kato, Hirokazu Okawa, Nakorn Worasuwannarak

Journal of Chemical Engineerig of Japan   52 ( 7 ) 610 - 615   2019.07  [Refereed]

Research paper (journal)   International Co-author

DOI

Synthesis of Porous γ-Fe₂O₃ via Alkaline Treatment of Size Controlled Scorodite Particles Synthesized Using Ultrasound Irradiation and Its Evaluation as a Cathode for Lithium-Ion Battery₂

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

Japanese Journal of Applied Physics   58   SGGD03-1 - SGGD03-7   2019.06  [Refereed]

Research paper (journal)   Domestic Co-author

DOI

Effect of Ultrasound Irradiationon Deposition of Au nanoparticles on Carbon-coated cathode material

Yasuyuki Tanaka, Hirokazu Okawa, Yuki Ono, Turtogtokh Enkhtuya, Tsermaa Galya, Takahiro Kato, Katsuyasu Sugawara

Japanese Journal of Applied Physics   58   SGGD17-1 - SGGD17-6   2019.06  [Refereed]

Research paper (journal)   International Co-author

DOI

Separation and Desulfurization of Bitumen from Oil Sand Using Oxidation Combined with Ultrasound

Hirokazu Okawa, Nobuyuki Akazawa, Takahiro Kato, and Katsuyasu Sugawara

Japanese Journal of Applied Physics   58   SGGD01-1 - SGGD01-3   2019.05  [Refereed]

Research paper (journal)   Domestic Co-author

DOI

Sonochemical synthesis of au nanoparticles on lifePO₄/C and the evaluation of its battery performance

Hirokazu Okawa, Yuki Ono, Yasuyuki Tanaka, Takahiro Kato, Katsuyasu Sugawara

Journal of the Society of Powder Technology, Japan   56 ( 3 ) 117 - 122   2019.03  [Refereed]

Research paper (journal)   Domestic Co-author

DOI

Development of efficient recovery process for precious metals from e-waste

Kosuke Sakusabe, Takahiro Kato, Hirokazu Okawa, Katsuyasu Sugawara

Journal of the Society of Powder Technology, Japan   56 ( 3 ) 130 - 135   2019.03  [Refereed]

Research paper (journal)   Domestic Co-author

DOI

Desorption of Carbon Dioxide from Monoethanolamine Solution Using Ultrasound and Calcium Chloride

Fujiwara Tatsuo, Okawa Hirokazu, Kato Takahiro, Sugawara Katsuyasu

Journal of MMIJ   135 ( 1 ) 1 - 7   2019.01  [Refereed]

Research paper (journal)   Domestic Co-author

DOI

Utilization of carbon dioxide to synthesize large scorodite particles under ultrasound irradiation

Yuya Kitamura, Hirokazu Okawa, Takahiro Kato, Katsuyasu Sugawara

Japanese Journal of Applied Physics   57   07LB15-1 - 07LB15-5   2018.06  [Refereed]

Research paper (journal)   Domestic Co-author

DOI

Simultaneous Recovery and Desulfurization of Bitumen from Oil Sand Using Ultrasound Irradiation

Hirokazu Okawa, Wan Mohamad Ikhwan bin Wan Kamal, Nobuyuki Akazawa, Takahiro Kato, and Katsuyasu Sugawara

Japanese Journal of Applied Physics   57 ( 7S1 ) 07LE09-1 - 07LE09-3   2018.06  [Refereed]

Research paper (journal)   Domestic Co-author

DOI

Behavior of Sulfur in Liquid Phase Oxidation of Coal

Takahiro Kato, Yuki Nagai, Hirokazu Okawa, and Katsuyasu Sugawara

Journal of the Japan Institute of Energy   97 ( 4 ) 88 - 96   2018.04  [Refereed]

Research paper (journal)   Domestic Co-author

DOI

Utilization of layered double hydroxide to remove arsenic and suppress pH decrement during ultrasound oxidation of arsenious acid

Yasuyuki Tanaka, Hirokazu Okawa, Yuya Takahashi, Takahiro Kato, and Katsuyasu Sugawara

Japanese Journal of Applied Physics   57 ( 7S1 ) 07LE02-1 - 07LE02-5   2018.04  [Refereed]

Research paper (journal)   Domestic Co-author

DOI

Recovery of Gold and Silver from an Incinerated Spent Printed Circuit Board Using Chlorination

Kosuke Sakusabe, Takahiro Kato, Hirokazu Okawa, Katsuyasu Sugawara

Journal of Chemical Engineering of Japan   51 ( 8 ) 704 - 710   2018.03  [Refereed]

Research paper (journal)   Domestic Co-author

DOI

Ultrasound-assisted oxidative desulfurization of bitumen

Wan Mohamad Ikhwan bin Wan Kamal, Hirokazu Okawa, Takahiro Kato, Katsuyasu Sugawara

Japanese Journal of Applied Physics   56   07JE03-1 - 07JE03-3   2017.06  [Refereed]

Research paper (journal)   Domestic Co-author

超音波と塩化カルシウムを用いたモノエタノールアミン溶液からの二酸化炭素の脱離

藤原達央，大川浩一，加藤貴宏，菅原勝康:

石油技術協会誌   81 ( 5 ) 418 - 419   2016.11

Research paper (journal)   Single author

Improved battery performance using Pd nanoparticles synthesized on the surface of LiFePO₄/C by ultrasound irradiation

Muhammad Ali Saliman, Hirokazu Okawa, Misaki Takai, Yuki Ono, Takahiro Kato, Katsuyasu Sugawara, Mineo Sato

Japanese Journal of Applied Physics   55   07KE05-1 - 07KE05-7   2016.05  [Refereed]

Research paper (journal)   Domestic Co-author

Selective Recovery of Gold from Incinerated Sewage Sludge Ash

Katsuyasu Sugawara, Kosuke Sakusabe, Takahiro Kato, Hirokazu Okawa

Journal of the Society of Powder Technology, Japan   53   136 - 141   2016.03  [Refereed]

Research paper (journal)   Domestic Co-author

DOI

Effect of ultrasound intensity on the size and morphology of synthesized scorodite particles

Yuya Kitamura, Hirokazu Okawa, Takahiro Kato, Katsuyasu Sugawara

Advanced Powder Technology   27 ( 3 ) 891 - 897   2016.02  [Refereed]

Research paper (journal)   Domestic Co-author

Recovery of Valuable Elements from Spent Printed Circuit

Takahiro Kato, Katsuyasu Sugawara and Takashi Nakamura

Journal of Chemical Engineering of Japan   49 ( 1 ) 60 - 67   2016.01  [Refereed]

Research paper (journal)   Domestic Co-author

Release Behavior and Chemical-Form Change of Lead in Molten Fly Ashes during Heat Treatment

KAGAKU KOGAKU RONBUNSHU   41 ( 4 ) 259 - 264   2015.07  [Refereed]

Research paper (journal)   Domestic Co-author

Desorption of CO₂ from low concentration monoethanolamine solutions using calcium chloride and ultrasound irradiation

Kosuke Tanaka, Hirokazu Okawa, Tatsuo Fujiwara, Takahiro Kato, Katsuyasu Sugawara

Japanese Journal of Applied Physics   54   07HE08   2015.07  [Refereed]

Research paper (journal)   Single author

Recovery of Gold from Incinerated Sewage Sludge Ash

Junichi Kakumazaki, Takahiro Kato, Katsuyasu Sugawara

ACS Sustainable Chemistry & Engineering   2 ( 10 ) 2297 - 2300   2014.09  [Refereed]

Research paper (journal)   Domestic Co-author

Selective Recovery of Rare Earth Elements from Spent Abrasive Material by Chlorination

Takahiro Kato, Katsuyasu Sugawara

KAGAKU KOGAKU RONBUNSHU   40 ( 2 ) 112 - 118   2014.09  [Refereed]

Research paper (journal)   Domestic Co-author

Preparation of Sn film and Cu-Sn alloy film using organometallic compounds by a wet chemical method

Naomichi Itakura, Takahiro Kato, Katsuyasu Sugawara

Journal of Chemical Engineering of Japan   43 ( 8 ) 693 - 697   2014.08  [Refereed]

Research paper (journal)   Domestic Co-author

Size and Morphology of Scorodite Particles Synthesized Using Ultrasound Irradiation

Yuya Kitamura, Hirokazu Okawa, Takahiro Kato, Katsuyasu Sugawara

Japanese Journal of Applied Physics   53 ( 7S ) 07KE05   2014.06  [Refereed]

Research paper (journal)   Domestic Co-author

Ultrasound Irradiation for Desorption of Carbon Dioxide Gas from Aqueous Solutions of Monoethanolamine

Kosuke Tanaka, Tatsuo Fujiwara, Hirokazu Okawa, Takahiro Kato, Katsuyasu Sugawara

Japanese Journal of Applied Physics   53 ( 7S ) 07KE14   2014.06  [Refereed]

Research paper (journal)   Domestic Co-author

Influence of Amount of Thermosensitive Polymer on Anion-Exchange Properties of Thermosensitive Polymer/Mesoporous Silica Composite

KAGAKU KOGAKU RONBUNSHU   39 ( 3 ) 206 - 212   2013.05  [Refereed]

Research paper (journal)   Domestic Co-author

Hydrogen Production from Japanese Cedar by the Low-temperature Catalytic Gasification

Kenji Murakami, Takahiro Kato, Katsuyasu Sugawara

Journal of the Japan Institute of Energy   92   313 - 318   2013.03  [Refereed]

Research paper (journal)   Domestic Co-author

Dynamic Behavior of Calcium and Mercury in Carbon Reduction of Gypsum

Takahiro KATO, Kenji MURAKAMI, and Katsuyasu SUGAWARA

Journal of the Japan Institute of Energy   92   157 - 163   2013.01  [Refereed]

Research paper (journal)   Domestic Co-author

Transition temperature control of adsorption-desorption property of PNIPAM/mesoporous silica composite by addition of crosslinking agent

Kenji Murakami, Shinichi Watanabe, Takahiro Kato, Katsuyasu Sugawara

Colloids and Surfaces A   419   223 - 227   2012.12  [Refereed]

Research paper (journal)   Domestic Co-author

Carbon reduction of gypsum produced from flue gas desulfurization

Takahiro Kato, Kenji Murakami, and Katsuyasu Sugawara

Chemical Engineering Transactions   29   805 - 810   2012.08  [Refereed]

Research paper (journal)   Domestic Co-author

Synthesis of temperature-responsive anion exchanger via click reaction

Kenji Murakami, Xue Yu, Takahiro Kato, Yukihiko Inoue, Katsuyasu Sugawara

Journal of Colloid and Interface Science   376   189 - 195   2012.03  [Refereed]

Research paper (journal)   Domestic Co-author

Influence of difference in chemical compositions of rice straw on hydrogen formation in nickel-catalyzed steam gasification

Kenji Murakami, Masahiko Sato, Takahiro Kato, and Katsuyasu Sugawara

Fuel Processing Technology   95   78 - 83   2011.11  [Refereed]

Research paper (journal)   Domestic Co-author

Conversion of rice straw into valuable products by hydrothermal treatment and steam gasification

Kenji Murakami, Kengo Kasai, Takahiro Kato, and Katsuyasu Sugawara

Fuel   93   37 - 43   2011.10  [Refereed]

Research paper (journal)   Domestic Co-author

Recovery of Rare Metals from Optical Glass by Chlorination

KAGAKU KOGAKU RONBUNSHU   37 ( 5 ) 454 - 459   2011.09  [Refereed]

Research paper (journal)   Domestic Co-author

Combustion Characteristics of Mixtures of Heavy Oil Ash and Waste Plastic

Journal of the Japan Institute of Energy   89   1006 - 1011   2010.11  [Refereed]

Research paper (journal)   Domestic Co-author

Preparation of carbonaceous heavy metal adsorbent from coal using sulfur impregnation

Takaaki Wajima, Kenji Murakami, Takahiro Kato, Katsuyasu Sugawara

Energy Sources, Part A   32   442 - 449   2009.12  [Refereed]

Research paper (journal)   Domestic Co-author

Photo-oxidation of ethylene with hydrogen peroxide

Katsuyasu Sugawara, Hideaki Suzuki, Takahiro Kato, Takuo Sugawara, Megumi Otsuka, Hitoshi Funayama

Journal of Chemical Engineering of Japan   42   s50 - s55   2009.12  [Refereed]

Research paper (journal)   Domestic Co-author

Thermodynamic and kinetic studies on Cs⁺- and Sr²⁺-exchange in natural zeolite from Akita: Japan

Kenji Murakami, Takaaki Wajima, Takahiro Kato, Katsuyasu Sugawara, Takuo Sugawara

Toxicological & Environmental Chemistry   91 ( 5-6 ) 1023 - 1034   2009.08  [Refereed]

Research paper (journal)   Domestic Co-author

Heavy metal removal from aqueous solution using carbonaceous K₂S-impregnated adsorbent

Takaaki Wajima, Kenji Murakami, Takahiro Kato, Katsuyasu Sugawara

Journal Environmental Science   21   1730 - 1734   2009.04  [Refereed]

Research paper (journal)   Domestic Co-author

Inhibition of release of alkali metals from coal during heat treatment with addition of clay mineral

Takahiro Kato, Yoshinori Ami, Takaaki Wajima, Kenji Murakami, Katsuyasu Sugawara, Takuo Sugawara

Clay Science   14 ( 1 ) 1 - 5   2008.04  [Refereed]

Research paper (journal)   Domestic Co-author

Preparation of Carbonaceous Heavy Metal Adsorbent from Palm Shell using Sulfur Impregnation

Katsuyasu Sugawara, Takaaki Wajima, Takahiro Kato and Takuo Sugawara

Ars Separatoria Acta   5   89 - 98   2007.01  [Refereed]

Research paper (journal)   Single author

Effect of hydrogen sulfide on organic sulfur behavior in coal and char during heat treatments

Katsuyasu Sugawara, Yukio Enda, Takahiro Kato, Takuo Sugawara, Masayuki Shirai

Energy & Fuels   17 ( 1 ) 204 - 209   2002.11  [Refereed]

Research paper (journal)   Domestic Co-author