Vol.9 No.3 2017

Research paper : Development of HASClay® as a high-performance adsorption material (M. Suzuki et al.)−165−Synthesiology - English edition Vol.9 No.3 (2017) Answer (Masaya Suzuki)Based on your comment on the development of the overall scenario, I categorized the items into three categories—basic research, application research, and scenario—and added Fig. 14 in “5. Future issues.”3 Composition of the elemental technologiesComment (Toshimi Shimizu)The structure of the first draft is merely a chronological presentation of a usual R&D story, and I feel there is a lack of synthesiological analysis expected for a Synthesiology paper. When you set the final target of the adsorbent as use in desiccant air conditioning, the issues to be solved seem to be the drastic improvement of synthesis yield, mass production in tons, reduction of raw material and adsorbent costs, safety of the nanotube substance, and the improvement of adsorption performance as indicated by the linear adsorption isothermal curve. You describe as the elemental technologies the concentration, reaction temperature, desalination, heating, and other conditions during synthesis. However, the correlations between the issues and elemental technologies are not clear. From the perspective of what kind of R&D scenario the authors wrote and how the issues were overcome, I think you need to add a slightly more technological description (especially Subchapters 3.2 and 3.3 of the rst draft). To do so, it is important to rst draw the correlation diagram of elemental technologies. Although there is no example that’s exactly the same, there are Synthesiology papers on adsorbents and others that may serve as reference for creating the diagrams that show the elemental technologies and development framework. For elemental technologies, you may be able to refer to “Development of massive synthesis method of organic nanotube toward practical use—Integration of molecular design, molecular synthesis and safety assessment for materials having market competitiveness” [Synthesiology–English edition, 1, 169–176 (2008)] and “Novel functional gels and their commercial distribution as chemical reagents—New development of functional soft-materials” [Synthesiology–English edition, 5, 181–189 (2012)]. For the development framework and relationship with companies, please refer to “A novel technology for production of drinking water in emergencies—Specific material for selective nitrate adsorption” [Synthesiology–English edition, 4, 156–161 (2012)].Answer (Masaya Suzuki)Thank you for your advice on the necessity for drawing the diagram of elemental technologies in conducting synthesiological analysis. I felt it was difcult to present a composition diagram of elemental technologies for inorganic substances, unlike the organic nanotubes and polymer gels, but I added the ndings so far to Subchapter 3.2. For technological details, I made additions to Subchapter 3.3. For development organization, I added a text to Chapter 4.4 Denition, birth, and naming of HASClayComment (Toshimi Shimizu)In the first draft, it is unclear what exactly HASClay is. In the paper, it says that you looked at the Si/Al molar ratio as a strategy to solve the issues on raw material costs, synthesis costs, production volume, synthesis yield, and others. Obtaining a hint from the fact that natural imogolite has constant composition ratio, while natural allophane is amorphous with unstable molar ratio between 0.5–1.0, you investigated the adsorption property of the individual products for water vapor, which were obtained by changing the molar ratio. However, the criteria that determine the final grade of HASClay are not the Si/Al molar ratio or the adsorption property, but they seem to be synthesis conditions, particularly temperature conditions and the manufacturing methods involving desalination treatment.Is HASClay a product with well-dened structures that can only be manufactured under rational synthesis conditions, or is it a product obtained in the course of a reaction process? The readers who specialize in chemistry will be greatly interested in the essence and nature of HASClay. Please describe the structural, morphological, and analytical properties and definitions of HASClay as much as you know or are allowed to disclose. I think you also need to discuss how you differentiate from similar adsorbents whose main ingredients are aluminum silicate, from the viewpoint of intellectual property strategy.In relation to this, please describe further the need to grade HASClay, and the denitive factor in the birth of HASClay that required two years for its development. Also, HASClay seems to be a trademark, but can you give additional discussion on how you came up with the name and why you decided to trademark this product?Answer (Masaya Suzuki)Since I did not provide explanation on the substances and attributes of HASClay, I made additions to Subchapter 3.3. The origin of the name is due to the fact that in x-ray diffraction, although there was no peak or layer structure of amorphous hydroxyl aluminum silicate (HAS), the peak for clay sheet could be seen. Also the product is not a mixture of two substances but consists of one substance that is deemed the composite of HAS and clay, hence the name HASClay. Along with the trademarking, I described this in Subchapter 3.2.5 Structure of nano-adsorbentComment (Toshimi Shimizu)Allophane and imogolite have well-defined sizes and dimensions as independent structures of nanometer scale. On the other hand, HASClay seems to be a composite of low-crystalline clay and amorphous aluminum silicate that contains imogolite of low-purity. To deepen the understanding of general readers for HASClay, I recommend you provide the structural figures of allophane and imogolite that are already known, as well as a photograph that depicts the powder form of HASClay.Answer (Masaya Suzuki)As you indicated, the structural diagrams of allophane and imogolite and the TEM photograph of HASClay are essential in showing the composition of elemental technologies of HASClay and the HASClay structure. The structural diagrams of allophane and imogolite were placed in Subchapter 2.1, while the TEM photograph of HASClay was added to Subchapter 3.3.6 Development organization and role divisionComment (Toshimi Shimizu)In conducting joint research with companies specializing in the adsorbents for desiccant air conditioning, materials for room humidity control, carbon dioxide recovery/use systems, and others, please provide additional discussion on the respective elemental technologies to solve the problems for public research institutions and companies, and the division of roles.Answer (Masaya Suzuki)Problem solving by public institutions and companies in desiccant air conditioning, room humidity control materials, and carbon dioxide recovery/use systems, and division of roles were explained in Chapter 4.7 Fields in which HASClay is usedQuestion (Shigeko Togashi)For the fields in which imogolite is used as shown in the diagram in the rst draft, what are the differences with the elds

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