| ²é¿´: 405 | »Ø¸´: 7 | |||
| µ±Ç°Ö÷ÌâÒѾ´æµµ¡£ | |||
guo7flyÒø³æ (ÕýʽдÊÖ)
|
[½»Á÷]
°ïæ¸ø·ÒëÒ»ÏÂ
|
||
|
enhanced siteºÍnormal site ·Ö±ðʲôÒâ˼£¿£¿ ÀýÈçenhanced catalytic sites are less active than are normal catalytic sites in the steps of initial C-C bond formation from methanol and dimethylether . Çë¸÷λ¸ßÊÖ°ïæ½âÊÍһϣ¡£¡ »¹ÓÐlattice aluminum ÊǾ§¸ñÂÁµÄÒâ˼ ÄÇextralattice aluminum ÊÇʲôÒâ˼£¿£¿ [search]enhanced normal site lattice[/search] |
» ²ÂÄãϲ»¶
¹ú¼Ò´óÈ˲ſÎÌâ×éÕÐÊÕ»¯Ñ§¡¢²ÄÁÏ»¯¹¤Àà2026Äêµ÷¼ÁÉú
ÒѾÓÐ0È˻ظ´
»¯¹¤-²ÄÁÏÓ뻯¹¤½ÓÊÕµ÷¼Á3Ãû
ÒѾÓÐ0È˻ظ´
»¯Ñ§¹¤³Ì¼°¹¤Òµ»¯Ñ§ÂÛÎÄÈóÉ«/·ÒëÔõôÊÕ·Ñ?
ÒѾÓÐ100È˻ظ´
¹óÖÝ´óѧ2026Äê˶ʿÑо¿ÉúÕÐÉúµ÷¼Áȱ¶îÐÅÏ¢
ÒѾÓÐ3È˻ظ´
ºÓÄÏÀí¹¤´óѧ»¯Ñ§»¯¹¤Ñ§ÔºÕÐÊÕ˶ʿµ÷¼ÁÉú2Ãû
ÒѾÓÐ0È˻ظ´
´óÁ¬¹¤Òµ´óѧÕÐ˶ʿÑо¿Éú
ÒѾÓÐ0È˻ظ´
ºÓÄÏÀí¹¤´óѧ»¯Ñ§»¯¹¤Ñ§ÔºÕÐÊÕ˶ʿ
ÒѾÓÐ0È˻ظ´
¹ú¼Ò´óÈ˲ſÎÌâ×éÕÐÊÕ»¯Ñ§¡¢²ÄÁÏ»¯¹¤Àà2026Äêµ÷¼ÁÉú
ÒѾÓÐ0È˻ظ´
¹ú¼Ò´óÈ˲ſÎÌâ×éÕÐÊÕ»¯Ñ§¡¢²ÄÁÏ»¯¹¤Àà2026Äêµ÷¼ÁÉú
ÒѾÓÐ0È˻ظ´
¹ú¼Ò´óÈ˲ſÎÌâ×éÕÐÊÕ»¯Ñ§¡¢²ÄÁÏ»¯¹¤Àà2026Äêµ÷¼ÁÉú
ÒѾÓÐ0È˻ظ´
»´±±Ê¦·¶´óѧ »¯Ñ§Ó뻯¹¤¿ÆÑ§Ñ§Ôº2026Äê˶ʿÑо¿ÉúÕÐÉú µ÷¼ÁÐÅÏ¢¹«¸æ
ÒѾÓÐ0È˻ظ´
guo7fly
Òø³æ (ÕýʽдÊÖ)
- Ó¦Öú: 0 (Ó×¶ùÔ°)
- ½ð±Ò: 222.6
- É¢½ð: 481
- Ìû×Ó: 523
- ÔÚÏß: 96Сʱ
- ³æºÅ: 442173
- ×¢²á: 2007-10-27
- ÐÔ±ð: GG
- רҵ: Óлú·Ö×Ó¹¦ÄܲÄÁÏ»¯Ñ§
2Â¥2008-02-23 17:03:22
pcchemist
½ð³æ (ÕýʽдÊÖ)
- Ó¦Öú: 0 (Ó×¶ùÔ°)
- ½ð±Ò: 563.7
- ºì»¨: 1
- Ìû×Ó: 387
- ÔÚÏß: 31.8Сʱ
- ³æºÅ: 455490
- ×¢²á: 2007-11-10
¡ï
buffaloli(½ð±Ò+1,VIP+0):¶àл£¡
buffaloli(½ð±Ò+1,VIP+0):¶àл£¡
|
½¨Ò飺¾ßÌåÃèÊöһϴ߻¯·´Ó¦Ìåϵ£¬¼°ÓйصĴ߻¯¼Á¡£Èç¹ûÄܸ½ÉÏÓйصIJο¼ÎÄÏ׿ÉÄÜ»á¸üºÃ£¡ extralattice aluminum ÎÒ¸öÈ˾õµÃÊDz»ÊǹǼÜÖеÄÂÁÍѵôÒԺ󣬽øÈëÁ˿׵ÀÖУ¬Ò²ÐγÉÁË»îÐÔλ£¡ÕýÈç·Ö×ÓɸµÄÍÑÂÁ¡£ |
3Â¥2008-02-23 17:37:07
guo7fly
Òø³æ (ÕýʽдÊÖ)
- Ó¦Öú: 0 (Ó×¶ùÔ°)
- ½ð±Ò: 222.6
- É¢½ð: 481
- Ìû×Ó: 523
- ÔÚÏß: 96Сʱ
- ³æºÅ: 442173
- ×¢²á: 2007-10-27
- ÐÔ±ð: GG
- רҵ: Óлú·Ö×Ó¹¦ÄܲÄÁÏ»¯Ñ§
4Â¥2008-02-23 18:06:06
guo7fly
Òø³æ (ÕýʽдÊÖ)
- Ó¦Öú: 0 (Ó×¶ùÔ°)
- ½ð±Ò: 222.6
- É¢½ð: 481
- Ìû×Ó: 523
- ÔÚÏß: 96Сʱ
- ³æºÅ: 442173
- ×¢²á: 2007-10-27
- ÐÔ±ð: GG
- רҵ: Óлú·Ö×Ó¹¦ÄܲÄÁÏ»¯Ñ§
5Â¥2008-02-23 18:07:58
guo7fly
Òø³æ (ÕýʽдÊÖ)
- Ó¦Öú: 0 (Ó×¶ùÔ°)
- ½ð±Ò: 222.6
- É¢½ð: 481
- Ìû×Ó: 523
- ÔÚÏß: 96Сʱ
- ³æºÅ: 442173
- ×¢²á: 2007-10-27
- ÐÔ±ð: GG
- רҵ: Óлú·Ö×Ó¹¦ÄܲÄÁÏ»¯Ñ§
|
ÆäÖÐÎÄÏ×ÖÐÓÐÕâô¼¸¾ä£ºit has been shown recently that aromatization activity of Z-34 zeolite (catalytic sites: bridging OH group only )increase in the initial period of catalyst operation under the condition of methanol conversition to hydrocarbons .on the basis of the comparision of the prouduct selectivities ,observed over Z-34 zeolite after 55min of its operition ,and the initial product selectivities , observed over Z-34ST zeolite (catalytic sites :bridging OH groups and enhanced activity of Z-34 zeolite ), the increase of aromatization activity of Z-34 zeolite was concluded to be due to the enhanced activity sites,which choud be created as a consequence of the interaction of this zeolite with the reaction mixture (water vapor ) . Õ⼸¾ä»°µÄÒâ˼ÊDz»ÊÇ˵ enhanced activity sites Óë bridging OH ÕâÖÖ»îÐÔÖÐÐÄÊDz»Ò»ÑùµÄ£¬enhanced activity sites ¶Ô·¼Ï㻯Óд߻¯×÷Óà £¬ËûµÄ²úÉúÊÇÓÉÓÚ´ß»¯¼ÁÓëË®ÕôÆû×öÓõÄÔÒò£¿ this fact further supports our previous results that hae shown that the new activity sites are less active in the steps of alkene formation from methanol and dimethylether than are normal activity sites of HZSM-5----bridging OH groups. ´ÓÕ⼸¾ä»°ÊDz»ÊÇ¿ÉÒÔÍÆ¶Ï³ö the new activity sites ¾ÍÊÇenhanced activity sites £¬¶ønormal activity sites ¾ÍÊÇbridging OH groups £¬Ç°Õß¶Ô·¼Ï㻯ÊÇÓлîÐԵ쬶øºóÕß¶ÔÏ©ÌþµÄÉú³ÉÊÇÓлîÐԵģ¿£¿ ÎÒÖªµÀµ¥¶ÀÕâô¿´ÊǺÜÄÑ Ã÷°×ÆäÖеÄÒâ˼£¡£¡¸÷λ¸ßÊÖ»¹ÊÇ»¨µêʱ¼ä°É£¡£¡Ð»Ð»£¡£¡ |
6Â¥2008-02-23 18:51:37
pcchemist
½ð³æ (ÕýʽдÊÖ)
- Ó¦Öú: 0 (Ó×¶ùÔ°)
- ½ð±Ò: 563.7
- ºì»¨: 1
- Ìû×Ó: 387
- ÔÚÏß: 31.8Сʱ
- ³æºÅ: 455490
- ×¢²á: 2007-11-10
¡ï
buffaloli(½ð±Ò+1,VIP+0):¶àл£¡
buffaloli(½ð±Ò+1,VIP+0):¶àл£¡
|
¿´Ò»¿´Õâ±¾ÊéµÄµÚËÄÕ£¬ http://muchong.com/bbs/viewthread.php?tid=624250 Ò²Ðí¶ÔÄãÓÐËù°ïÖú! [ Last edited by pcchemist on 2008-2-23 at 20:07 ] |
7Â¥2008-02-23 20:02:56
guo7fly
Òø³æ (ÕýʽдÊÖ)
- Ó¦Öú: 0 (Ó×¶ùÔ°)
- ½ð±Ò: 222.6
- É¢½ð: 481
- Ìû×Ó: 523
- ÔÚÏß: 96Сʱ
- ³æºÅ: 442173
- ×¢²á: 2007-10-27
- ÐÔ±ð: GG
- רҵ: Óлú·Ö×Ó¹¦ÄܲÄÁÏ»¯Ñ§
8Â¥2008-02-27 09:27:56













»Ø¸´´ËÂ¥
´ó¼Ò°ïææ°¡