%0 Journal Article
%T Modification for SBA-15 Molecular Sieve by Lanthanum(III)<br>镧(Ⅲ)对SBA-15分子筛改性研究
%A ZHAI Qing-Zhou
%A WANG Wei
%A JIANG Tian-Su
%A WANG Yuan
%A CHEN Ming-Gui
%A <br>翟庆洲
%A 王巍
%A 江天肃
%A 王媛
%A 陈明贵
%J 无机材料学报
%D 2004
%I Science Press
%X SBA-15 molecular sieve was prepared under a strong acidity condition by using triblock copolymer, poly(ethylene glycol)-block-poly(propylene glycol)-block-poly(ethylene glycol) as the template and tetraethyl orthosilicate as the silica source by means of a hydrothermal method. La-(SBA-15) composite materials were prepared by a solid-liquid exchange method using the calcinedhost material SBA-15 molecular sieve and lanthanum chloride in water and water+alcohol media, respectively. By mean of chemical analysis, powder X-ray diffraction, nitrogen adsorption-desorption technique and infrared spectroscopy, the validity of the preparative method and the effect of it on the pore structure of SBA-15 molecular sieve were evaluated. In addition, the luminescence phenomena of La-(SBA-15) product were observed. The results show that lanthanum has been incorporated into SBA-15 molecular sieve. The silanol groups on the internal wall surfaces are the major sites for lanthanum incorporation. The part of the guest is in the channels of the molecular sieve. The prepared materials La-(SBA-15) keep the highly ordered mesoporous two-dimensional hexagonal structure and do not change the mesoporous channel structure of the support SBA-15.
%K composite material
%K SBA-15 molecular sieve modification
%K lanthanum
%K characterization<br>复合材料
%K SBA—15分子筛改性
%K 镧
%K 表征
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=84529CA2B2E519AC&jid=ABC0063016AF57E1C73EF43C8D2212BD&aid=6C28AE27AE588464&yid=D0E58B75BFD8E51C&vid=2A8D03AD8076A2E3&iid=94C357A881DFC066&sid=E477FFDBDE309A4B&eid=DB29DCDE63A11F6A&journal_id=1000-324X&journal_name=无机材料学报&referenced_num=1&reference_num=16