C-13 DIPOLAR NMR-STUDY OF BENZENE CHEMISORBED ON HIGH-SURFACE ALUMINA-SUPPORTED PLATINUM

被引：5

作者：

ENGELSBERG, M

YANNONI, CS

JACINTHA, MA

DYBOWSKI, C

DESOUZA, RE

机构：

[1] UNIV DELAWARE,DEPT CHEM & BIOCHEM,NEWARK,DE 19716

[2] UNIV DELAWARE,CTR CATALYT SCI & TECHNOL,NEWARK,DE 19716

[3] UNIV FED PERNAMBUCO,DEPT FIS,BR-50670901 RECIFE,PE,BRAZIL

来源：

JOURNAL OF PHYSICAL CHEMISTRY | 1994年 / 98卷 / 09期

关键词：

D O I：

10.1021/j100060a029

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：

NMR spectroscopy of dipole-coupled pairs of C-13 nuclei is employed to probe the molecular structure and dynamics of benzene molecules chemisorbed on a Pt/eta-Al2O3 catalyst. A modified Carr-Purcell sequence, which suppresses inhomogeneous broadening, permits good spectral resolution over a broad temperature range. A comparison between spectral data and computer simulations indicates more than one type of site for the chemisorbed molecules. The molecular structure appears to be indistinguishable from that in polycrystalline benzene but with a vastly different motional behavior.

引用

页码：2397 / 2402

页数：6

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