ANALYTICAL CHEMISTS APPROACH TO HETEROGENEOUS CATALYSIS - GAS CHROMATOGRAPHIC-MASS SPECTROMETRIC CHARACTERIZATION OF POLYCYCLIC AROMATIC-HYDROCARBONS AS A FINGERPRINT OF ACTIVE-SITES IN HYDROCARBON-REFORMING CATALYSTS

被引：2

作者：

DOSSI, C ^{[1
]}

FUSI, A ^{[1
]}

RECCHIA, S ^{[1
]}

CALMOTTI, S ^{[1
]}

PSARO, R ^{[1
]}

机构：

[1] UNIV MILAN,CTR CNR,I-20133 MILAN,ITALY

来源：

ANALYST | 1995年 / 120卷 / 09期

关键词：

GAS CHROMATOGRAPHY MASS SPECTROMETRY; POLYCYCLIC AROMATIC HYDROCARBON; ZEOLITE; HETEROGENEOUS CATALYSIS;

D O I：

10.1039/an9952002353

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The analytical CC-MS characterization of polycyclic aromatic hydrocarbons (PAHs), formed as by-products in the model reaction of methylcyclopentane reforming, is proposed as a convenient tool for fingerprinting the nature of active sites in heterogeneous catalysts. The by-products obtained with non-acidic Pt/KL and Pt/NaY catalysts (platinum particles inside zeolite cages) were characterized as 2-4 condensed-ring PAHs. The distribution and the structure of such by-products were demonstrated to be related to the geometry of the zeolite framework. With acid catalysts, families of isomers of all the polymethyl-derivatives of three- and four-ring aromatics were obtained. Careful analyses of total-ion GC profiles via single-ion monitoring allowed the identification of each family of isomers.

引用

页码：2353 / 2356

页数：4

共 13 条

[1] CATALYTIC PROBE FOR ALLOY FORMATION IN SUPPORTED PTRE CATALYSTS - ISOTOPE EXCHANGE AND HYDROGENOLYSIS OF CYCLOPENTANE [J].