Vol.9 No.3 2017

Research paper : Development of HASClay® as a high-performance adsorption material (M. Suzuki et al.)−164−Synthesiology - English edition Vol.9 No.3 (2017) AuthorsMasaya SuzukiCompleted the course at the Graduate School of Science (Department of Mineralogy), University of Tokyo in 1996. Joined the Department of Ceramic Technology, National Industrial Research Institute of Nagoya, Agency of Industrial Science and Technology in 1996. Moved to Research Institute for Geo-Resources and Environment (GREEN), AIST in 2001; and currently, Group Leader, Resource Geochemistry Research Group, GREEN, AIST. Since Nagoya, has engaged in the research for growth, synthesis, and adsorption of amorphous materials and for low-crystalline clay (imogolite). Engaged in application research based on natural phenomena, such as the transition of colloid in high level radioactive waste material disposal and the use of heat for energy saving. In this paper, was in charge of research for synthesis and carbon dioxide adsorption.Masaki MaedaGraduated from the Aichi University of Education in 1984, and worked at the Radioisotope Research Center, Nagoya University in 1984. Joined the National Industrial Research Institute of Nagoya in 1988, and engaged in research on ceramic raw material and humidity controlling building materials. Obtained Doctor (Engineering), Tokyo Institute of Technology in 2002. Chief Senior Researcher, Cycling Material Group, Structural Materials Research Institute, AIST from 2015. In this paper, was in charge of research for humidity controlling building materials and water vapor adsorption.Kei’ichi InukaiCompleted the master’s program at the Department of Chemistry, Graduate School of Science, Nagoya University in 1990. Joined the Department of Ceramic Technology, National Industrial Research Institute of Nagoya, Agency of Industrial Science and Technology in 1990. Obtained Doctor (Science), Hokkaido University in 2001. Currently, Senior Researcher, Material Surface Group, Structural Materials Research Institute, AIST. Studied inorganic biochemistry at Nagoya University; after joining NIRIN, studied the effective use of articial clay (kaolinite) and sepiolite; and then researched the fabrication of clay LB lm in the doctor’s program. At AIST, engages in the research of imogolite and HASClay for energy saving measures. In this paper, was in charge of research for adsorptions of nitrogen and organic solvents, and was also in charge of the Imogolite Workshop.Riron To Saishin Gijutsu (Basic Principles and Latest Technologies of the Desiccant Air-Conditioning System), S&T Publishing, 92–100 (2015) (in Japanese).[16]AIST: Anka na koseino mukikei kyuhoshutsuzai wo kaihatsu (Development of inexpensive, high-performance inorganic moisture adsorbent/desorbent), press release, released 2008/10/08 (in Japanese).[17]M. Suzuki: Temperature range and rate on formation of Imogolite, Abstracts of the Japan Association of Mineralogical Sciences, 163 (2001) (in Japanese).[18]M. Maeda, K. Inukai and M. Suzuki: Kesshosei nendo to hishoshitsu aluminum keisan’en fukugotai no jitsuyoka ni kansuru kenkyu—Naisokenzai heno oyo (Research on the practical use of composite of crystalline clay and amorphous aluminum silicate—Application in interior building materials), Proceedings of 57th Meeting of Clay Science Society of Japan, 174–175 (2013) (in Japanese).[19]M. Suzuki, C. Ikeda, K. Tajiri, K. Inukai and M. Maeda: Kiatsu ijo no atsuryoku ni izon shite kyuchaku ridatsu kano na nisanka tanso kyuchakuzai (Carbon dioxide adsorbent that can adsorb and desorb according to atmospheric pressure or higher), Patent No. 5229916 (2013) (in Japanese).[20]M. Suzuki: Kashitsuki haikichu no nisanka-tanso kaishu seisei sairiyo system no kaihatsu (Development of recovery, renement, and reuse system for carbon dioxide in exhaust gas of humidifiers), Nisanka Tanso No Chokusetsu Riyo Saishin Gijutsu (Latest Technologies for Direct Use of Carbon Dioxide), NTS, 55–63 (2013) (in Japanese).Discussions with Reviewers1 OverallComment (Shigeko Togashi, AIST)With the results of basic research on the structure and function of natural clay as its base, you present the course of synthesizing clay mineral HASClay and achieving its practical use through joint research with companies, through a scenario where clear goals have been set, to realize new use of clay minerals in society.After you became aware of the limitations of the use of natural clay materials, you shifted to synthesis, and then went back to basic research to clarify the structure and function of the newly synthesized substance HASClay. This led to the improvement of the synthesis method for HASClay and the expansion of its use.The scenario is developed as you go back and forth between the basic and application research after setting up a scenario with clear goals, and the range of use is expanded through joint research with the private sector. This paper can be evaluated highly as a Synthesiology paper.Comment (Toshimi Shimizu, AIST)This paper describes the details for the development of the inorganic porous material HASClay® that is a composite of amorphous aluminum silicate and low-crystalline clay, and its application as adsorbents in desiccant air conditioning. After becoming aware of the limitations of natural adsorbents such as allophane and imogolite, you leave them to develop a new adsorbent. You present a scenario in which various requirements are overcome in chronological order. The R&D scenario described is interesting because the issues are solved to obtain the required functions for energy-saving dehumidier/humidier by considering inexpensive raw materials, synthesis costs, mass production, and adsorption performance. I think this paper is suitable for publication in Synthesiology.2 Development of the scenarioComment (Shigeko Togashi)For development of the overall scenario described herein, please add a ow diagram. Please include the topics of this paper in that diagram, and refer to other Synthesiology papers on how to create the diagram.

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