物理化学学报2012，Vol.28Issue(9)：2108-2114,7.DOI:10.3866/PKU.WHXB201206181
无有机模板剂水热合成Co同晶取代的丝光沸石分子筛
Organotemplate-Free Hydrothermal Synthesis of Isomorphously Co-Substituted Mordenite Molecular Sieve
摘要
Abstract
An organotemplate-free hydrothermal route was investigated for synthesizing isomorphously Co-substituted mordenite molecular sieve using only the inorganic raw materials such as sodium silicate,aluminum sulfate,cobalt nitrate,and sodium hydroxide.Textural properties and Co ion states for the obtained solid products were characterized by powder X-ray diffraction (XRD),scanning electron microscope (SEM),inductively coupled plasma (ICP),nitrogen adsorption,ultraviolet-visible (UV-Vis)spectra,and thermogravimetric (TG) analysis.The results showed that Co ions were incorporated into the framework structure of the mordenite without the presence of extra-framework Co species.Typical synthesis conditions were n(Co)/n(SiO2)=0.01-0.04,n(SiO2)/n(Al2O3)=20-50,n(H2O)/n(SiO2)=40,n(Na2O)/n(SiO2)=0.4,crystallization temperature 170 °C,and crystallization time 3-7 d.The structure-directing function of Na+ ions in the absence of an organic template was discussed.Products obtained by the present allinorganic systems possess open micropores and do not require traditional high-temperature calcination.Thus,we demonstrate a low cost,low energy consumption,and environmentally benign synthesis of Co-mordenite.关键词
微孔材料/化学合成/晶体生长/X射线衍射/杂原子沸石Key words
Microporous material/ Chemical synthesis/ Crystal growth/ X-ray diffraction/Heteroatomic zeolite分类
化学化工引用本文复制引用
王琦,吴雅静,王军,林晓..无有机模板剂水热合成Co同晶取代的丝光沸石分子筛[J].物理化学学报,2012,28(9):2108-2114,7.基金项目
国家自然科学基金(21136005,21101094,20976084)资助项目 （21136005,21101094,20976084）
The project was supported by the National Natural Science Foundation of China (21136005,21101094,20976084). （21136005,21101094,20976084）
