摘要
本文运用扫描电子显微镜、X射线粉末衍射仪等手段对在不同干燥方法下得到的层状材料草甘膦锆分子聚集体的形貌及其对甲醛吸附性能进行了深入研究,探讨了干燥条件对材料形态的影响以及化合物形态对甲醛吸附不同的内在因素。研究结果表明:干燥方法不同,所得草甘膦锆的形貌有明显差别,应用超临界干燥技术得到的产物是具有大比表面(445m2·g-1)和大比孔容(5.32cm3·g-1)的三维网状结构,应用冷冻干燥技术得到的产物具有介孔结构,而使用喷雾干燥技术得到的产物为微孔与介孔共存微球。在对4种不同干燥产物对甲醛吸附性能的研究发现,甲醛分子在不同形态载体上的吸附能力差距很大,超临界干燥得到的草甘膦锆对甲醛吸附最大百分率(被吸附甲醛的质量占吸附组装体的百分含量)达到7.8%,且甲醛被吸附后热稳定性较好,具有较好的应用前景。
In this paper, Zirconium Glyphosate （ZrGP） was synthesized via refluxing. Photos coming from scanning electronic microscopy show that there are different on structure of the micro-particles of product morphologies by using different dried results. A 3D porous structure with high surface area （445 m^2·g^-1） and larger pore volume （5.32 cm^3·g^-1） of ZrGP was obtained by supercritical drying, and mesoporous microsphere of ZrGP was obtained by using freeze-drying and spray-drying methods. Adsorptions to formaldehyde of these microspheres were studied. Results showed a high adsorptive quantum and a high stability was gained on the product of ZrGP that was dried by supercritical drying. These results indicate a fine application foreground on environment.
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
2010年第11期2033-2040,共8页
Chinese Journal of Inorganic Chemistry
基金
国家自然科学基金(No.50602004)资助项目
关键词
草甘膦锆
干燥技术
甲醛吸附
zirconium glyphosate
drying methods
formaldehyde adsorption
