±±¾©Ê¯ÓÍ»¯¹¤Ñ§Ôº2026ÄêÑо¿ÉúÕÐÉú½ÓÊÕµ÷¼Á¹«¸æ
²é¿´: 410  |  »Ø¸´: 4
µ±Ç°Ö÷ÌâÒѾ­´æµµ¡£

csfn

ÈÙÓþ°æÖ÷ (ÖªÃû×÷¼Ò)

ÓÅÐ㳬°æÓÅÐã°æÖ÷ÓÅÐãÇø³¤

[½»Á÷] ¡¾·ÖÏí¡¿9ÔÂ25ÈÕµÄscience£ºAl3+ as binding sites for Pt on Al2O3

abstract£º
In many heterogeneous catalysts, the interaction of metal particles with their oxide support can alter the electronic properties of the metal and can play a critical role in determining particle morphology and maintaining dispersion. We used a combination of ultrahigh magnetic field, solid-state magic-angle spinning nuclear magnetic resonance spectroscopy, and high-angle annular dark-field scanning transmission electron microscopy coupled with density functional theory calculations to reveal the nature of anchoring sites of a catalytically active phase of platinum on the surface of a g-Al2O3 catalyst support material. The results obtained show that coordinatively unsaturated pentacoordinate Al3+ (Al3+ penta) centers present on the (100) facets of the g-Al2O3 surface are anchoring Pt. At low loadings, the active catalytic phase is atomically dispersed on the support surface (Pt/Al3+ penta = 1), whereas two-dimensional Pt rafts form at higher coverages.

title£ºCoordinatively Unsaturated Al3+ Centers as Binding Sites for Active Catalyst Phases of Platinum on g-Al2O3
from £º25 SEPTEMBER 2009 VOL 325 SCIENCE


link£ºhttp://www.sciencemag.org/cgi/content/abstract/325/5948/1670

[ Last edited by mingdong on 2009-12-9 at 08:21 ]
»Ø¸´´ËÂ¥
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
2Â¥2009-09-27 20:22:36
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

fegg7502

ÈÙÓþ°æÖ÷ (ÖªÃû×÷¼Ò)

¶¥
3Â¥2009-09-28 01:03:35
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

fegg7502

ÈÙÓþ°æÖ÷ (ÖªÃû×÷¼Ò)

ÎÞ

ÓÅÐã°æÖ÷

¡ï
Сľ³æ(½ð±Ò+0.5):¸ø¸öºì°ü£¬Ð»Ð»»ØÌû½»Á÷
ÒýÓûØÌû:
Originally posted by csfn at 2009-9-25 09:35:
abstract£º
In many heterogeneous catalysts, the interaction of metal particles with their oxide support can alter the electronic properties of the metal and can play a critical role in determining ...

Á¬½ÓÄØ£¿
ÐijÏÒâÕý£¬·½¿ÉʼÖÕ£»ÉíÎÞ¿àÃð£¬ÓÀµÇ¹âÃ÷¡£
4Â¥2009-09-28 01:05:15
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

csfn

ÈÙÓþ°æÖ÷ (ÖªÃû×÷¼Ò)

ÓÅÐ㳬°æÓÅÐã°æÖ÷ÓÅÐãÇø³¤

ÒýÓûØÌû:
Originally posted by fegg7502 at 2009-9-28 01:05:

Á¬½ÓÄØ£¿

¾ÍÖªµÀÄã»áÓÐÐËȤ
5Â¥2009-09-28 07:54:38
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
Ïà¹Ø°æ¿éÌø×ª ÎÒÒª¶©ÔÄÂ¥Ö÷ csfn µÄÖ÷Ìâ¸üÐÂ
×î¾ßÈËÆøÈÈÌûÍÆ¼ö [²é¿´È«²¿] ×÷Õß »Ø/¿´ ×îºó·¢±í
[¿¼ÑÐ] 326·ÖÇóµ÷¼Á +3 ÓÚÊǺõÄØ 2026-04-01 5/250 2026-04-03 14:23 by ÓÚÊǺõÄØ
[¿¼ÑÐ] 282Çóµ÷¼Á ²»Ìôרҵ ÇóÊÕÁô +7 Yam. 2026-03-30 8/400 2026-04-03 14:12 by zhangdingwa
[¿¼ÑÐ] 306·Ö²ÄÁÏÓ뻯¹¤Çóµ÷¼Á +4 Àè°ÉÀ²À²ÄãºÜÓÐà 2026-04-03 4/200 2026-04-03 11:24 by wangjy2002
[¿¼ÑÐ] 319Çóµ÷¼Á +18 Ì«ÈÝÒ×1018 2026-04-01 18/900 2026-04-03 11:18 by linyelide
[¿¼ÑÐ] 315Çóµ÷¼Á +11 СÑòСÑò_ 2026-04-02 11/550 2026-04-02 21:57 by wwytracy
[¿¼ÑÐ] µ÷¼Á +3 ºÃºÃ¶ÁÊé¡£ 2026-04-01 6/300 2026-04-02 15:49 by liumengping
[¿¼ÑÐ] ²ÄÁÏ»¯¹¤340Çóµ÷¼Á +5 jhx777 2026-03-30 5/250 2026-04-02 12:45 by smileboy2006
[¿¼ÑÐ] Ò»Ö¾Ô¸±±¾©Àí¹¤´óѧ±¾¿Æ211²ÄÁϹ¤³Ì294Çóµ÷¼Á +8 mikasaµÄΧ½í 2026-03-28 9/450 2026-04-02 12:09 by ms629
[¿¼ÑÐ] 385·Ö ÉúÎïѧ£¨071000£©Çóµ÷¼Á +6 qf626 2026-04-01 6/300 2026-04-02 10:39 by guoweigw
[¿¼ÑÐ] ²ÄÁϵ÷¼Á +12 Ò»ÑùYWY 2026-04-01 12/600 2026-04-02 09:15 by olim
[¿¼ÑÐ] ²ÄÁϵ÷¼Á +12 Ò»ÑùYWY 2026-04-01 12/600 2026-04-02 00:21 by °ÙÃë¹âÄê
[¿¼ÑÐ] ²ÄÁÏר˶µ÷¼Á +17 Ò¬Ò¬¡£ 2026-03-29 17/850 2026-04-01 20:44 by cq2548
[¿¼ÑÐ] ÉúÎïѧ296Çóµ÷¼Á +10 ÌÀÔ²°ü 2026-03-29 14/700 2026-04-01 10:44 by Çóµ÷¼Ázz
[¿¼ÑÐ] 288×ÊÔ´Óë»·¾³×¨Ë¶Çóµ÷¼Á£¬²»ÏÞרҵ£¬ÓÐѧÉϾÍÐÐ +25 lllllos 2026-03-30 26/1300 2026-04-01 09:52 by Ò»Ö»ºÃ¹û×Ó?
[¿¼ÑÐ] Çóµ÷¼Á£ºÒ»Ö¾Ô¸£ºÄϾ©´óѧ רҵ£º0705 ×Ü·Ö320 £¬±¾¿Æ985£¬ËÄÁù¼¶Òѹý +3 lfy760306 2026-03-31 3/150 2026-04-01 01:57 by Creta
[¿¼ÑÐ] 353Çóµ÷¼Á +3 ½­ÉÏ·ã_26 2026-03-28 3/150 2026-03-31 15:53 by jp9609
[¿¼ÑÐ] 262Çóµ÷¼Á +7 ZZ..000 2026-03-30 8/400 2026-03-31 10:05 by cal0306
[¿¼ÑÐ] 291Çóµ÷¼Á +5 Y-cap 2026-03-29 6/300 2026-03-29 13:18 by mumin1990
[¿¼ÑÐ] 356Çóµ÷¼Á +4 gysy?s?a 2026-03-28 4/200 2026-03-29 10:32 by ÌÆãå¶ù
[¿¼ÑÐ] Ò»Ö¾Ô¸ÄϾ©º½¿Õº½Ìì´óѧ²ÄÁÏѧ˶Çóµ÷¼Á +3 @taotao 2026-03-28 3/150 2026-03-28 10:26 by JourneyLucky
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û