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Ô­ÎÄ£ºabout 100  mg  of  PEI/SBA-15  sample  was  placed  into  a  U-shape  quartz reactor  and  pretreated  at  100◦C  under  helium  flow  (30  ml/min)  for 20  min.  When  the  temperature  was  reduced  to  75◦C,  CO2 sorption was  performed  by  flowing  CO2(10  ml/min)  for  30  min.  Then  the temperature  was  decreased  to  40◦C  under  the  same  CO2 flow.  After that,  the  desorption  experiment  was  executed  by  purging  helium gas  (50  ml/min)  through  the  sorbent  bed  and  ramping  the  temperature  from  40  to  110 ◦C  at  a  rate  of  5◦C/min  and  holding  at  110◦C  for 20  min .The  CO2 uptake  or  sorption  capacity  in  millimole  of  CO2 per gram  of  sorbent  (mmol/g-S)  was  calculated  on  the  basis  of  the  desorbed  CO2 amount  from  the  desorption  curve,  which  was  calibrated by  a  certain  amount  of  CO2.

²»Ã÷°×ËûµÄCO2Îü¸½Á¿ÔõôËãµÄ£¬ÔÚÕâ¸öÎÄÕÂÖеÄʵÑéÊý¾ÝÓë֮ǰµÄʵÑéÊý¾ÝÓгöÈë¡£³ýÁËSBA-15µÄ½á¹¹²ÎÊýĿǰ»¹²»ÖªµÀÊÇ·ñÒ»Ñù£¬ÆäËûÌõ¼þ¶¼Ò»Ñù¡£Ê²Ã´½Ðcalculated  on  the  basis  of  the  desorbed  CO2 amount  from  the  desorption  curve,  which  was  calibrated by  a  certain  amount  of  CO2.???

³ö´¦£ºWang X, Song C. Temperature-programmed desorption of CO2 from polyethylenimine-loaded SBA-15 as molecular basket sorbents[J]. Catalysis Today, 2012, 194(1): 44-52  £¨ËδºÉ½£©
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