Development of Reactive Ceramic Devices for High-Temperature Solar Thermo Water Splitting

高温太阳能热分解反应陶瓷装置的开发

• 批准号: 17360463
• 负责人: KODAMA Tatsuya
• 金额: $ 9.28万
• 依托单位: Niigata University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2005
• 资助国家: 日本
• 起止时间: 2005 至 2006
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-17360463/
• 关键词: Concentrated Solar Heat; Hydrogen Production; Energy Conversion; Water Splitting; Thermochemical Cycle; Metal Oxide; Sun-belt; Reactor

In this research project, we have developed reactive ceramic devices to be used in solar thermochemical two-step water splitting cycle, for utilizing high-temperature solar heat in sun-belt regions. The main results are listed below :1. Development of High Reactive Ceramic PowdersWe investigated the other-metal doping effect on the ferrite supported on zirconia and found that Ni_<0.1>Fe_<2.0>O_4/ZrO_2 is the most reactive powder. On the other hand, we also found that, when yttrium-cubic-stabilized zircionia or YSZ is used as support instead of normal monoclinic zirconia, an iron-containing YSZ or Fe^<2+>-YSZ is formed by a high-temperature reaction between YSZ, and FeBBB_<3B>OB_<4B> supported on the YSZ at 1400℃ in an inert atmosphere, and that the FePPP^<2+P>-YSZ then reacts with steam and generate hydrogen at 1000-1100℃, to form FeP^<3+P>-YSZ that is re-activated by a thermal reduction in a separate step at temperatures above 1400℃ under an inert atmosphere.2. Preparation and Reactivity Test of Reactive DevicesZirconia foams coated with the Ni<1.0>Fe_<2.0>O4/ZrO_2or Fe_3O_4/YSZ particles were prepared as reactive devices and examined on reactivity for two-step water splitting cycle being performed alternately at temperatures between 1100 and 1400℃. Hydrogen successfully continued to be produced in the repeated 13-30 cycles, but foam device had cracks and broken after the repeated cycles. Ceramic foams with a higher thermal shock resistance, such as SiC foam, should be used as the matrix of the reactive devices.3. Coating of SiC foam with Ziconia and Performance test for Thermal Resistance under Solar IrradiationThe SiC foam matrix was successfully coated with zirconia layers before FeBB_<3BB>OBB_<4BB> is applied on the matrix. On the other hand, the SiC foam matrix was examined on thermal resistance under solar irradiation using solar furnace and, as the results, we found that the SiC foam matrix has a good thermal resistance.

在本研究项目中，我们开发了用于太阳能热化学两步分解水循环的反应陶瓷装置，用于在太阳带地区利用高温太阳热能，主要成果如下： 1．陶瓷粉末我们研究了其他金属对氧化锆负载铁氧体的掺杂效果，发现Ni_<0.1>Fe_<2.0>O_4/ZrO_2是活性最强的粉末。另一方面，我们还发现，当使用钇立方稳定氧化锆或YSZ代替普通单斜氧化锆作为载体时，通过高温反应形成含铁的YSZ或Fe^2+-YSZ。 YSZ，FeBBB_<3B>OB_<4B>在1400℃惰性气氛中负载在YSZ上，并且FePPP^<2+P>-YSZ 然后与蒸汽在 1000-1100℃ 反应并生成氢气，形成 FeP^<3+P>-YSZ，并在高于 1400℃ 的温度下通过单独步骤中的热还原重新活化惰性气氛下。 2．反应器件的制备及反应性测试制备了Ni<1.0>Fe_<2.0>O4/ZrO_2或Fe_3O_4/YSZ颗粒作为反应装置，并考察了在1100~1400℃温度下交替进行的两步水分解循环的反应性，成功地在反应器中连续制氢。重复13-30次循环，但泡沫器件在重复循环后出现裂纹和破裂，而具有较高抗热震性能的陶瓷泡沫，如SiC。 3．氧化锆涂层SiC泡沫及其太阳辐射热阻性能测试在FeBB_<3BB>OBB_<4BB>应用之前，在SiC泡沫基体上成功涂覆了氧化锆层。另一方面，利用太阳炉对 SiC 泡沫基体在太阳辐射下的热阻进行了测试，结果发现 SiC 泡沫基体具有良好的热阻。热阻。

项目成果

Michael reaction of β-ketoesters with vinyl ketones by iron(III)-exchanged fluorotetrasilicic mica : catalytic and spectroscopic studies

通过铁(III)交换的氟四硅云母进行β-酮酯与乙烯基酮的迈克尔反应：催化和光谱研究

• 发表时间: 2005
• 期刊: Journal of Catalysis 229
• 作者: Y Watanuki;S Wanless;M Harris;J Lovvorn;M Miyazaki;K Sato;児玉 竜也;児玉 竜也;清水 研一;清水 研一;児玉 竜也;郷右近 展之;児玉 竜也;郷右近 展之;児玉 竜也;Tatsuya Kodama;Ken-ichi Shimuzu;Ken-ichi Shimizu;Tatsuya Kodama;Nobuyuki Gokon;Tatsuya Kodama;Nobuyuki Gokon;Tatsuya Kodama;児玉 竜也;旗町 剛;児玉 竜也;児玉 竜也;清水 研一;清水 研一;清水 研一
• 通讯作者: 清水 研一

Iron-containing YSZ (Yttrium-Stabilized Zirconia) system for a two-step thermochemical water splitting

用于两步热化学水分解的含铁 YSZ（钇稳定氧化锆）系统

• 发表时间: 2006
• 期刊: Proceedings of 13th International Symposium on Concentrated Solar Power and Chemical Energy Technologies (CD-ROM)
• 作者: Y Watanuki;S Wanless;M Harris;J Lovvorn;M Miyazaki;K Sato;児玉 竜也;児玉 竜也;清水 研一;清水 研一;児玉 竜也;郷右近 展之
• 通讯作者: 郷右近 展之

Solar tubular reformer with molten-salt thermal storage -design modification of the reactor tube and testing

熔盐蓄热太阳能管式重整器-反应管设计改造及测试

• 发表时间: 2006
• 期刊: Proceedings of the ASME Solar Energy Division, International Solar Energy Conference (ISEC2006) (CD-ROM)
• 作者: Y Watanuki;S Wanless;M Harris;J Lovvorn;M Miyazaki;K Sato;児玉 竜也;児玉 竜也;清水 研一;清水 研一;児玉 竜也;郷右近 展之;児玉 竜也;郷右近 展之;児玉 竜也
• 通讯作者: 児玉 竜也

Double-walled reactor tube with molten salt thermal storage for solar tubular reformer

用于太阳能管式重整器的熔盐蓄热双壁反应器管

• 发表时间: 2006
• 期刊: J. Solar Energy Engineering, Transactions of the ASME 128
• 作者: Y Watanuki;S Wanless;M Harris;J Lovvorn;M Miyazaki;K Sato;児玉 竜也;児玉 竜也;清水 研一;清水 研一;児玉 竜也;郷右近 展之;児玉 竜也;郷右近 展之;児玉 竜也;Tatsuya Kodama;Ken-ichi Shimuzu;Ken-ichi Shimizu;Tatsuya Kodama;Nobuyuki Gokon;Tatsuya Kodama;Nobuyuki Gokon;Tatsuya Kodama;児玉 竜也;旗町 剛
• 通讯作者: 旗町 剛

A new solar chemical reactor with an internally circulating fluidized bed for direct irradiation of reacting particles

一种新型太阳能化学反应器，具有内循环流化床，可直接照射反应粒子

• 发表时间: 2006
• 期刊: Proceedings of 13th International Symposium on Concentrated Solar Power and Chemical Energy Technologies (CD-ROM)
• 作者: Y Watanuki;S Wanless;M Harris;J Lovvorn;M Miyazaki;K Sato;児玉 竜也;児玉 竜也;清水 研一;清水 研一;児玉 竜也;郷右近 展之;児玉 竜也
• 通讯作者: 児玉 竜也