摘要
研究[1-2]表明分子筛的催化、吸附、分离性能在很大程度上取决于其尺寸和形貌。近年来,人们越来越多的关注于精确控制晶粒的尺寸、形态和取向[3-11]。
在所有沸石分子筛中,由于MFI型分子筛具有独特的孔道结构且应用广泛,目前的研究主要集中于此。
Self-stacked TS-1 crystals with fibrous morphology were prepared by conventional hydrothermal method. The synthesized samples were characterized by XRD, UV-Vis and SEM. The results show that TS-1 crystals with uniform shape and size are self-stacked on top of another along the crystallographic [010] direction to form the fibrous morphology under suitable hydrothermal synthesis conditions. Compared with silicalite, the Ti incorporated into the MFI framework induces stronger condensation of external hydroxyl groups of TS-1 crystals, resulting in formation of the self-stacked morphology.
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
2010年第9期1711-1714,共4页
Chinese Journal of Inorganic Chemistry
基金
材料化学工程国家重点实验室项目(No38901124)资助
关键词
钛硅分子筛
形貌
层状堆积
常规水热合成
TS-1
morphology
self-stacking
conventional hydrothermal synthesis
