PtSn/SiO2 catalysts prepared by surface controlled reactions for the selective hydrogenation of cinnamaldehyde

• Type: Article in International Scientific Journal
• Date: 2010

Authors

Andrea B. Merlo (Author) Other; Bruno F. Machado (Author) FEUP; Virginia Vetere (Author) Other; Joaquim L. Faria (Author) FEUP; Mónica L. Casella (Author) Other

Journal

Title: Applied Catalysis A: General

Vol. 383 No. 1

Pages: 43-49

ISSN: 0926-860X

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 42 Citations

ISI Web of Science

Scopus - 52 Citations

Scientific classification

FOS: Natural sciences > Chemical sciences

Other information

Authenticus ID: P-003-4PK

DOI: 10.1016/j.apcata.2010.05.020

Abstract (EN): Tin-modified platinum catalysts were prepared by means of a controlled surface reaction, varying the Sn:Pt atomic ratio between 0 and 0.8. The addition of tin caused a noticeable change both in product distribution and the reaction rate. The selectivity to cinnamyl alcohol increases as a function of Sn content, reaching a value of 80% for a Sn:Pt ratio of 0.8. Reaction rate is also higher for bimetallic catalysts than for Pt/SiO2, with the highest value obtained for systems with Sn:Pt = 0.2-0.4. These results are indicative of the formation of a new type of active sites, compared to those present in the monometallic catalyst. Bimetallic catalysts using a water-soluble tin precursor Bu3SnOH, were also prepared. An enhanced performance regarding the monometallic catalyst was also obtained with these materials proving to be an environmentally friendlier alternative to obtain PtSn catalysts.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 7