Origin of anomalous Pt-Pt distances in the Pt/alumina catalytic system

被引：51
作者：
Sohlberg, K
Rashkeev, S
Borisevich, AY
Pennycook, SJ
Pantelides, ST
机构：
[1] Drexel Univ, Dept Chem, Philadelphia, PA 19104 USA
[2] Vanderbilt Univ, Dept Phys & Astron, Nashville, TN 37235 USA
[3] Oak Ridge Natl Lab, Condensed Matter Sci Div, Oak Ridge, TN 37831 USA
来源：
CHEMPHYSCHEM | 2004年 / 5卷 / 12期
关键词：
aluminum; density functional calculations; heterogeneous catalysis; platinum; scanning transmission electron microscopy; (STEM);
D O I：
10.1002/cphc.200400212
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
(Figure presented) Intriguing Pt3 structures observed on the Pt/γ-alumina catalytic system by atomic-resolution Z-contrast scanning transmission electron microscopy (STEM) are investigated with first-principles calculations (see electronic densities in the Pt3 plane with and without the capping -OH group).
引用
收藏
页码：1893 / 1897
页数：5
相关论文
共 45 条
[1]   γ-Al2O3-Supported PtRu clusters prepared from [Pt2Ru4(CO)18(CO)18]:: Characterization by infrared and extended x-ray absorption fine structure spectroscopies [J].
Alexeev, OS ;
Graham, GW ;
Shelef, M ;
Adams, RD ;
Gates, BC .
JOURNAL OF PHYSICAL CHEMISTRY B, 2002, 106 (18) :4697-4704
[2]   SURFACE MODELS FOR GAMMA-AL2O3 FROM MOLECULAR-DYNAMICS SIMULATIONS [J].
ALVAREZ, LJ ;
SANZ, JF ;
CAPITAN, MJ ;
CENTENO, MA ;
ODRIOZOLA, JA .
JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS, 1993, 89 (19) :3623-3628
[3]   DENSITY-FUNCTIONAL EXCHANGE-ENERGY APPROXIMATION WITH CORRECT ASYMPTOTIC-BEHAVIOR [J].
BECKE, AD .
PHYSICAL REVIEW A, 1988, 38 (06) :3098-3100
[4]   FULL-POTENTIAL, LINEARIZED AUGMENTED PLANE-WAVE PROGRAMS FOR CRYSTALLINE SYSTEMS [J].
BLAHA, P ;
SCHWARZ, K ;
SORANTIN, P ;
TRICKEY, SB .
COMPUTER PHYSICS COMMUNICATIONS, 1990, 59 (02) :399-415
[5]   gamma-alumina-supported Pt catalysts for aromatics reduction: A structural investigation of sulfur poisoning catalyst deactivation [J].
Chang, JR ;
Chang, SL ;
Lin, TB .
JOURNAL OF CATALYSIS, 1997, 169 (01) :338-346
[6]   THE INFLUENCE OF PARTICLE-SIZE ON THE CATALYTIC PROPERTIES OF SUPPORTED METALS [J].
CHE, M ;
BENNETT, CO .
ADVANCES IN CATALYSIS, 1989, 36 :55-172
[7]  
DEBOER JH, 1952, P INT S REACT SOL, V1, P237
[8]   PROPANE DEHYDROGENATION ON CHROMIA SILICA AND CHROMIA ALUMINA CATALYSTS [J].
DEROSSI, S ;
FERRARIS, G ;
FREMIOTTI, S ;
GARRONE, E ;
GHIOTTI, G ;
CAMPA, MC ;
INDOVINA, V .
JOURNAL OF CATALYSIS, 1994, 148 (01) :36-46
[9]   SOLID-STATE DEFECT MECHANISM IN VANADYL PYROPHOSPHATE CATALYSTS - IMPLICATIONS FOR SELECTIVE OXIDATION [J].
GAI, PL ;
KOURTAKIS, K .
SCIENCE, 1995, 267 (5198) :661-663
[10]   SUPPORTED METAL-CLUSTERS - SYNTHESIS, STRUCTURE, AND CATALYSIS [J].
GATES, BC .
CHEMICAL REVIEWS, 1995, 95 (03) :511-522
12345