fulltext.study @t Gmail

Influence of the Brønsted acidity, SiO2/Al2O3 ratio and Rh–Pd content on the ring opening: Part I. Selective ring opening of decalin

Paper ID Volume ID Publish Year Pages File Format Full-Text
40206 45845 2014 9 PDF Available
Title
Influence of the Brønsted acidity, SiO2/Al2O3 ratio and Rh–Pd content on the ring opening: Part I. Selective ring opening of decalin
Abstract

•Decalin ring opening using Rh–Pd supported on SiO2/Al2O3 was studied.•Support acidity is strongly influenced by the SiO2/Al2O3 ratio.•Rh and/or Pd modify the conversion and the product distribution.•Support acidity has a strong influence on the conversion and product distribution.•Rh/Pd = 2 and monometallic Rh supported on SIRAL 40 are the most active and selective.

The influence of the Brønsted acidity, SiO2/Al2O3 ratio and Rh–Pd content on the ring opening of decalin was studied. Rh- and Pd-based monometallic and bimetallic catalysts were prepared by impregnation on three commercial SiO2/Al2O3 supports (SIRAL 5, 20 and 40). The catalysts were characterized by TPD of pyridine, X-ray diffraction, H2 chemisorption, isomerization of 3,3-dimethyl-1-butene (33DM1B) and selective ring opening (SRO) of decalin. It was found that the support acidity is strongly influenced by the SiO2/Al2O3 ratio, the SIRAL 40 being more acid. The metal accessibility has the following order: supported catalysts on SIRAL 40 > SIRAL 20 > SIRAL 5. The incorporation of Rh and/or Pd modifies the conversion and the product distribution on decalin reaction. The support acidity has a strong influence on the conversion and product distribution on the decalin reaction at 350 °C. SIRAL 5 series have low selectivity to RO and high selectivity to dehydrogenated compounds. On the other hand, SIRAL 40 series lead to the highest yield to cracking products of the three studied series. Catalysts with Rh/Pd atomic ratios equal to 2 and monometallic Rh1 supported on SIRAL 40 are the most active and selective catalysts to ring opening products.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (111 K)Download as PowerPoint slide

Keywords
Ring opening; Brønsted acidity; Bimetallic catalysts; Rh–Pd; Bifunctional catalysts; Decalin
First Page Preview
Influence of the Brønsted acidity, SiO2/Al2O3 ratio and Rh–Pd content on the ring opening: Part I. Selective ring opening of decalin
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us
Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 469, 17 January 2014, Pages 532–540
Authors
, , , , ,
Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us