Synthesis of new adsorbents for prodution of oxygen gas form air combustion

空气燃烧制氧气用新型吸附剂的合成

基本信息

批准号：
09555276
负责人：
KINOMURA Nobukazu
金额：
$ 7.94万
依托单位：
YAMANASHI UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
1997
资助国家：
日本
起止时间：
1997 至 1999
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09555276/
关键词：
Pillared Clay Barium Ferrite Inorganic-Organic Complex Zirconium Phosphate Silylation Ion Exchange Resin Porous Materials Separation of air 酸素燃焼酸素・窒素分離リン酸ジルコニウム有機誘導体

项目摘要

Oxygen combustion is considered to be more desirable combustion technic than ordinary air combustion from view point of efficiency and air pollution. However oxygen gas produced by prevalent manufacturing process is still too expensive for the wide use of oxygen combustion. In order to develop a low cost separation system for production of oxygen gas from air at room temperature and atmospheric pressure, new adsorbents with the high oxygen selectivity were explored. As candidates for such adsorbents porous pillared clay compounds, organic derivatives of layered phosphates and partially carbonized materials were chosen in this study.Montmorillonite pillared with barium ferrite was prepared by calcination of montmorillonite including barium ions and polynuclear iron carboxylate ions in the interlayer spaces. The pillared montmorillonite was found to have the specific surface area of 152 mィイD12ィエD1/g and exhibit the selective adsorption for oxygen (4.4 times larger than that for nitrogen) at room temperature. Magnetic micropore is considered to adsorb more paramagnetic oxygen gas than diamagnetic nitrogen gas. Selective adsorption of oxygen was also observed for organic derivatives of zirconium phosphate such as zirconium phenylphosphonate phosphate with surface area of about 200 mィイD12ィエD1/g and silylated zirconium phosphate. Porous carbonaceous materials which were prepared from ion-exchange resin containing metal ions such as iron and cobalt by partial carbonization at relatively low temperatures also showed high oxygen selectivities (adsorbed OィイD22ィエD2/NィイD22ィエD2 ratio 〜5). These facts indicate that there are more materials with high oxygen selectivities than expected and they are suitable to the adsorbents used for production of oxygen from air with low cost.

从效率和空气污染的角度来看，氧气燃烧被认为比普通空气组合更为理想的组合技术。但是，由于普遍的制造工艺产生的氧气仍然太昂贵了，对于广泛使用氧气混合物。为了开发一个低成本的分离系统，以在室温和大气压下从空气中生产氧气，探索了具有高氧选择性的新吸附剂。作为此类吸附剂多孔柱状粘土化合物的候选物，在这项研究中选择了分层磷酸盐和部分碳化材料的有机衍生物。通过计算包括属于钡离子和多核铁羧酸盐酸铁羧酸酯离子的蒙脱石岩石硅酸盐，用铁矿的巨木岩柱子来制备。发现柱状蒙脱石的特定表面积为152 MII D12 E D1/g，并在室温下表现出氧气的选择性吸附（比氮大的4.4倍）。磁性微孔被认为可以吸附比二氧化氮气体更多的顺磁性氧气。还观察到氧气的氧气衍生物的选择性吸附，例如磷酸锆的有机衍生物，例如苯基膦酸酯磷酸二硫代磷酸盐，表面积约为200 mil d12e d1/g，磷酸二硅烷基二甲硅烷二氧化锆。由离子交换树脂制备的多孔碳质材料在相对较低的温度下通过部分碳化制备了金属离子，例如铁和钴，也显示出较高的氧气选择性（吸附的OII D22/NII D2222 E D2比率〜5）。这些事实表明，氧气选择性高的材料比预期的要多，并且适用于以低成本从空气中生产氧气的吸附剂。