| ²é¿´: 714 | »Ø¸´: 1 | ||
| ±¾Ìû²úÉú 1 ¸ö ·ÒëEPI £¬µã»÷ÕâÀï½øÐв鿴 | ||
hellen7256ľ³æ (СÓÐÃûÆø)
|
[ÇóÖú]
ÇóÖúÎÄÏ×·Ò룬лл£¡Ó¢ÒëÖС£
|
|
|
In our previous work, we successfully prepared NaA zeolites through hydrothermal processes using chemosynthetic low silicon geopolymers [15-16]. Geopolymers are non-crystalline or quasi-crystalline gels with three-dimensional network structures that were first introduced by Joseph Davidovits in 1978 [17]. In general, geopolymers are prepared from natural minerals or solid wastes through the polymerization of silicon-oxygen tetrahedra and aluminum-oxygen tetrahedra [17-19]. However, in this work, the geopolymers were synthesized through the sol-gel method to overcome the disadvantage of using impure raw materials [20-21]. In this paper, we report the preparation and study of an Al2O3-2SiO2-Na2O geopolymer membrane transformed in situ into a self-supporting NaA zeolite membrane through a hydrothermal process. The preliminary results from the desalination of NaCl solutions using the self-supporting NaA membrane were also reported. In this paper, we first prepared inorganic membranes of an Al2O3-2SiO2-Na2O geopolymer through a gel casting process and then transformed the material into a NaA zeolite through a hydrothermal procedure. Hence, self-supporting zeolite membranes may be prepared through a hydrothermal synthesis procedure using a geopolymer gel according to the directions shown in Fig. 1. |
» ²ÂÄãϲ»¶
312Çóµ÷¼Á
ÒѾÓÐ4È˻ظ´
Ò»Ö¾Ô¸0817»¯Ñ§¹¤³ÌÓë¼¼Êõ£¬Çóµ÷¼Á
ÒѾÓÐ4È˻ظ´
²ÄÁϵ÷¼Á
ÒѾÓÐ7È˻ظ´
302Çóµ÷¼ÁÒ»Ö¾Ô¸»ªÖÐʦ·¶´óѧ
ÒѾÓÐ7È˻ظ´
071000ÉúÎïѧµ÷¼Á
ÒѾÓÐ7È˻ظ´
Ò»Ö¾Ô¸°²»Õ´óѧ0817»¯Ñ§¹¤³ÌÓë¼¼Êõ£¬Çóµ÷¼Á
ÒѾÓÐ4È˻ظ´
326Çóµ÷¼Á
ÒѾÓÐ5È˻ظ´
²ÄÁÏר˶322·Ö
ÒѾÓÐ10È˻ظ´
309Çóµ÷¼Á
ÒѾÓÐ10È˻ظ´
¿¼Ñе÷¼Á
ÒѾÓÐ5È˻ظ´
jiangguofeng
½ð³æ (ÖøÃûдÊÖ)
- ·ÒëEPI: 248
- Ó¦Öú: 41 (СѧÉú)
- ½ð±Ò: 25943.4
- ºì»¨: 25
- Ìû×Ó: 2111
- ÔÚÏß: 567.1Сʱ
- ³æºÅ: 72410
- ×¢²á: 2005-06-04
- רҵ: ºÏ³ÉÒ©Îﻯѧ
¡¾´ð°¸¡¿Ó¦Öú»ØÌû
¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï
hellen7256: ½ð±Ò+25, ·ÒëEPI+1, ¡ï¡ï¡ï¡ï¡ï×î¼Ñ´ð°¸, лл 2015-06-16 22:03:44
hellen7256: ½ð±Ò+25, ·ÒëEPI+1, ¡ï¡ï¡ï¡ï¡ï×î¼Ñ´ð°¸, лл 2015-06-16 22:03:44
|
ÔÚÎÒÃÇÒÔǰµÄÑо¿ÖУ¬Ê¹Óû¯Ñ§ºÏ³ÉµÄµÍ¹èµØÖʾۺÏÎïͨ¹ýÈÈÒº×÷Óóɹ¦µØÖƱ¸ÁËNaA·Ðʯ[15-16]¡£µØÖʾۺÏÎïÊǾßÓÐÈýÎ¬ÍøÂç½á¹¹µÄ·Ç¾§ÐÔ»ò×¼½á¾§ÐÔµÄÄý½º£¬ÊÇÓÉJoseph DavidovitsÔÚ1978ÄêÊ×ÏÈÌá³öµÄ[17]¡£Ò»°ãÇé¿öϵØÖʾۺÏÎïÊÇÓÉÌìÈ»µÄ¿óÎï»ò¹ÌÌå·ÏÎïͨ¹ý¹èÑõËÄÃæÌåºÍÂÁÑõËÄÃæÌåµÄ¾ÛºÏ·´Ó¦ÖƱ¸µÄ[17-1È»¶ø£¬ÔÚ±¾Ñо¿ÖУ¬ÎªÁ˿˷þʹÓò»´¿µÄÔÁϵÄȱµã£¬µØÖʾۺÏÎïÊÇͨ¹ýÈܽº-Äý½º·¨ºÏ³ÉµÄ[20 - 21]¡£20-21]. ±¾ÎÄÖб¨¸æÁËÒ»ÖÖͨ¹ýÈÈÒº×÷ÓÃÔλת»»³É×Ô³ÐNaA·ÐʯĤ°åµÄAl2O3-2SiO2-Na2OµØÖʾۺÏÎïĤ°åµÄÖÆ±¸ºÍÑо¿¡£»¹±¨¸æÁËʹÓÃ×Ô³ÐNaAĤ°å½øÐÐNaClÈÜÒºÍÑÑεijõ²½½á¹û¡£ ±¾ÎÄÖÐÊ×ÏÈͨ¹ýÄý½º½½Öý·½·¨È»ºóͨ¹ýÈÈÒº·½·¨½«ÕâÖÖ²ÄÁÏת»»³ÉNaA·ÐÊ¯ÖÆ±¸ÁËAl2O3-2SiO2-Na2OµØÖʾۺÏÎïµÄÎÞ»úĤ¡£×ÛÉÏËùÊö£¬°´ÕÕͼ1ËùʾµÄÖ¸µ¼£¬×ԳзÐʯĤ°å¿ÉÒÔʹÓÃÒ»ÖÖµØÖʾۺÏÎïÄý½ºÍ¨¹ýÈÈÒººÏ³É·½·¨½øÐÐÖÆ±¸¡£ |
2Â¥2015-06-16 09:04:40














»Ø¸´´ËÂ¥