Using natural Na montmorillonite as the host clay, porous silica-pillared montmorillonites (Si-PILC) were prepared by the template synthesis method. Furthermore, the texture and structure of such composite materials w...Using natural Na montmorillonite as the host clay, porous silica-pillared montmorillonites (Si-PILC) were prepared by the template synthesis method. Furthermore, the texture and structure of such composite materials were investigated by using modern several physicochemical techniques such as powder X-ray Diffraction (XRD), X-ray Fluorescence (XRF), Fourier Transformation Infra-red Spectra (FT-IR), and N2 adsorption/desorption measurements. The results reveal that tetrathylorthosilicate (TEOS) agent has been successfully intercalated into the montmorillonite and the characteristic d001 spacing of Si-PILC increases from 1.28nm to 3.15nm. The resultant products with large gallery height possess BJH pore volume as large as 0.30cm^3/g, remarkably high BET specific surface area of over 592.0m^2/g, pore size distribution in the mesopore region 3.3nm^4.3nm after thermal treatment at 800℃.展开更多
文摘Using natural Na montmorillonite as the host clay, porous silica-pillared montmorillonites (Si-PILC) were prepared by the template synthesis method. Furthermore, the texture and structure of such composite materials were investigated by using modern several physicochemical techniques such as powder X-ray Diffraction (XRD), X-ray Fluorescence (XRF), Fourier Transformation Infra-red Spectra (FT-IR), and N2 adsorption/desorption measurements. The results reveal that tetrathylorthosilicate (TEOS) agent has been successfully intercalated into the montmorillonite and the characteristic d001 spacing of Si-PILC increases from 1.28nm to 3.15nm. The resultant products with large gallery height possess BJH pore volume as large as 0.30cm^3/g, remarkably high BET specific surface area of over 592.0m^2/g, pore size distribution in the mesopore region 3.3nm^4.3nm after thermal treatment at 800℃.
