FTIR and XPS study of supported PtSn catalysts used for light paraffins dehydrogenation

被引：58

作者：

deMiguel, S ^{[1
]}

Castro, A ^{[1
]}

Scelza, O ^{[1
]}

Fierro, JLG ^{[1
]}

Soria, J ^{[1
]}

机构：

[1] CAMPUS UNIV AUTONOMA, INST CATALISIS & PETROLEOQUIM, E-28049 MADRID, SPAIN

来源：

CATALYSIS LETTERS | 1996年 / 36卷 / 3-4期

关键词：

metal catalysts; paraffins dehydrogenation; catalyst characterization;

D O I：

10.1007/BF00807620

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：

A comparison between the characteristics of the metallic phase (studied by FTIR and XPS) of Pt and PtSn catalysts supported on Al2O3, K-doped Al2O3 and MgO (used for light paraffins dehydrogenation reactions) is reported in this paper. The beneficial effects produced by tin addition to platinum, both in the increase of the selectivity to propene and the low coke formation, would be related with the possible electronic modifications of Pt by Sn, with probable formation of alloys, mainly for Al2O3 and MgO supported bimetallic catalysts. On the other hand, the modification of the electronic state of Pt by Sn addition appears to be of a minor importance in bimetallic catalysts supported on K-doped Al2O3.

引用

页码：201 / 206

页数：6

共 23 条

[1]

ADAMIEC J, 1993, STUD SURF SCI CATA B, V75, P1405

[2] MOSSBAUER-SPECTRA INVESTIGATION OF THE ROLE OF TIN IN PLATINUM-TIN REFORMING CATALYSTS [J].

BACAUD, R ;

BUSSIERE, P ;

FIGUERAS, F .

JOURNAL OF CATALYSIS, 1981, 69 (02) :399-409

[3]

BARIAS OA, 1994, STUD SURF SCI CATAL, V88, P519

[4] STATE OF METALLIC PHASE IN PT-SN/AL2O3 CATALYSTS PREPARED BY DIFFERENT DEPOSITION TECHNIQUES [J].

BARONETTI, GT ;

DEMIGUEL, SR ;

SCELZA, OA ;

CASTRO, AA .

APPLIED CATALYSIS, 1986, 24 (1-2) :109-116

[5] MOSSBAUER-SPECTROMETRIC AND CATALYTIC INVESTIGATIONS OF SYSTEM PT-SN-ETA-AL2O3 [J].

BERNDT, H ;

MEHNER, H ;

VOLTER, J ;

MEISEL, W .

ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE, 1977, 429 (02) :47-58

[6] STUDY BY EXAFS AND TEM OF THE EFFECT OF THE REDUCTION-OXIDATION CYCLES OVER PT/AL2O3-K AND PTSN/AL2O3-K CATALYSTS [J].

CABALLERO, A ;

DEXPERT, H ;

LEPELTIER, F ;

DIDILLON, B ;

LYNCH, J .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, 1993, 32 :442-444

[7] CATALYSTS FOR THE SELECTIVE DEHYDROGENATION OF HIGH-MOLECULAR-WEIGHT PARAFFINS [J].

CASTRO, AA .

CATALYSIS LETTERS, 1993, 22 (1-2) :123-133

[8]

CASTRO AA, 1983, PREPARATION CATALYST, V3, P47

[9] PT/MGO AS CATALYST FOR HYDROGENOLYSIS REACTIONS OF C5 AND C6 HYDROCARBONS - EVIDENCE FOR METAL-SUPPORT INTERACTIONS [J].

CLARKE, JKA ;

BRADLEY, MJ ;

GARVIE, LAJ ;

CRAVEN, AJ ;

BAIRD, T .

JOURNAL OF CATALYSIS, 1993, 143 (01) :122-137

[10] AROMATIZATION OF N-HEXANE BY PT CLUSTERS SUPPORTED ON HIGH SURFACE-AREA MGO [J].

DAVIS, RJ ;

DEROUANE, EG .

JOURNAL OF CATALYSIS, 1991, 132 (01) :269-274

← 1 2 3 →