%0 Journal Article
%T Recovery of Organic Template from SBA-15 Using Supercritical Carbon Dioxide Extraction<br>超临界CO2萃取回收SBA-15中的有机模板剂
%A SU Guang-xun
%A JIN Jun-su
%A CUI Wen-guang
%A LIU Hong-tao
%A ZHANG Ze-ting
%A <br>苏广训
%A 金君素
%A 崔文广
%A 刘洪涛
%A 张泽廷
%J 过程工程学报
%D 2012
%I 
%X The optimum conditions to recover organic template P123(EO20PO70EO20) from SBA-15 using supercritical carbon dioxide extraction with cosolvents were studied in a 200 mL high pressure extraction vessel.The effects of cosolvent,extraction temperature,extraction pressure,and cosolvent flow rate on recovery rate were studied.The results showed that under the optimal operating conditions of methanol as cosolvent,extraction temperature 45℃,extraction pressure 27 MPa,cosolvent flow rate 4 mL/min,and extraction time 1.5 h,the recovery rate of template P123 was 73.7%.SBA-15 obtained by different methods was characterized.The results indicated methanol-modified supercritical carbon dioxide extraction was an efficient and environmental friendly method.The obtained SBA-15 maintained highly ordered framework.The recovery process of supercritical carbon dioxide extraction can avoid the structure shrinkage and silanol group removal caused by high thermal calcination.
%K template recovery
%K SBA-15
%K supercritical carbon dioxide extraction
%K cosolvent<br>模板剂回收
%K SBA-15
%K 超临界CO2萃取
%K 夹带剂
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=3FCF8B1A330466D5&jid=B9EE12934D19905403D996AE65CEEEED&aid=28538CA98C300078B6A5B8617507AE17&yid=99E9153A83D4CB11&vid=59906B3B2830C2C5&iid=CA4FD0336C81A37A&sid=0401E2DB1F51F8DE&eid=5D71B28100102720&journal_id=1009-606X&journal_name=过程工程学报&referenced_num=0&reference_num=0