Effects of the preparation techniques on the properties of Sn-Pt/Al sub 2 O sub 3 reforming catalysts

Conference · Sat Aug 01 00:00:00 EDT 1987 · American Chemical Society, Division of Petroleum Chemistry, Preprints; (USA)

OSTI ID:5426620

Margitfalvi, J L; Talas, E; Gobolos, S; Hegedus, M; Szedlacsek, P ^[1]

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1. Central Research Institute for Chemistry, Pusztaszeri (Hungary)

Tin-platinum bimetallic catalysts are widely used in reforming technologies and dehydrogenation of hydrocarbons. Despite the large amount of work done in the field of preparation and use of Sn-Pt/Al{sub 2}O{sub 3} catalysts, there are still many questions to be answered: i.e., (i) in what forms (metallic or ionic) does tin exist on the surface of the support, (ii) how to stabilize the required forms of tin in these catalysts, or (iii) what is the role of different forms of tin in the improved catalytic performance and high activity maintenance For preparation of Sn-Pt/Al{sub 2}O{sub 3} catalysts coimpregnation or subsequent impregnation techniques are generally used. The precursors of the active metals are H{sub 2}PtCl{sub 6} and SnCl{sub 2} or SnCl{sub 4}. Bimetallic tin-platinum complexes or a special anchoring technique were also used. It seems to us that only the anchoring technique can result in the formation of a given tin containing surface species, exclusively, however, even this technique cannot guarantee the exclusive formation of Sn-Pt bimetallic species with metal-metal interaction. In this study, we summarize our experimental data obtained in the preparation of different types of alumina supported tin-platinum catalysts. Our study is based on a new approach, i.e., on the use of different types of Controlled Surface Reactions (CSRs).

• OSTI ID: 5426620
• Report Number(s): CONF-8708312-; CODEN: ACPCA
• Journal Information: American Chemical Society, Division of Petroleum Chemistry, Preprints; (USA), Vol. 32:3; Conference: Symposium on advances in naphtha reforming, New Orleans, LA (USA), 30 Aug - 4 Sep 1987; ISSN 0569-3799
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
CATALYSTS
CHEMICAL PREPARATION
PLATINUM
CATALYTIC EFFECTS
TIN
ALUMINIUM OXIDES
CATALYSIS
CATALYTIC REFORMING
CHEMISORPTION
EXPERIMENTAL DATA
ALUMINIUM COMPOUNDS
CHALCOGENIDES
CHEMICAL REACTIONS
DATA
ELEMENTS
INFORMATION
METALS
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PLATINUM METALS
REFORMER PROCESSES
SEPARATION PROCESSES
SORPTION
SYNTHESIS
TRANSITION ELEMENTS
020400* - Petroleum- Processing