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

Paper ID Volume ID Publish Year Pages File Format Full-Text
41995 45907 2010 7 PDF Available
Title
PtSn/SiO2 catalysts prepared by surface controlled reactions for the selective hydrogenation of cinnamaldehyde
Abstract

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.

Graphical abstractPtSn/SiO2 (Sn:Pt 0–0.8) catalysts were prepared by SOMC/M techniques. The addition of tin caused a noticeable change both in product distribution and the reaction rate than for Pt/SiO2. The selectivity to cinnamyl alcohol increases as a function of Sn content and reaction rate too. Bimetallic catalysts using a water-soluble tin precursor Bu3SnOH, were also prepared. An enhanced performance regarding the monometallic catalyst was also obtained.Figure optionsDownload full-size imageDownload high-quality image (58 K)Download as PowerPoint slide

Keywords
Surface organometallic chemistry; Bimetallic catalysts; PtSn; Selective hydrogenation; Cinnamaldehyde
First Page Preview
PtSn/SiO2 catalysts prepared by surface controlled reactions for the selective hydrogenation of cinnamaldehyde
Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 383, Issues 1–2, 31 July 2010, Pages 43–49
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis