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Substrate influences on activity and stability of SBA-15–Pr-anchored Rh–P complex catalysts for olefin hydroformylation

Paper ID Volume ID Publish Year Pages File Format Full-Text
42348 45921 2010 7 PDF Available
Title
Substrate influences on activity and stability of SBA-15–Pr-anchored Rh–P complex catalysts for olefin hydroformylation
Abstract

RhCl3 was immobilized to diphenylphosphinopropyl (–PrPPh2)-modified mesoporous silica SBA-15 through a multi-step-assembly process. The prepared catalyst was characterized with reference to bulky and surface properties by X-ray diffraction (XRD), infrared spectroscopy (FT-IR), isothermal nitrogen sorption analysis and X-ray photoelectron spectroscopy (XPS). The metal content was determined by inductive coupling plasma-atomic emission spectroscopy (ICP-AES). The prepared rhodium-immobilized catalyst was employed in hydroformylation of several higher olefins of different lengths (C6, C8, and C10), different CC bond positions (terminal or internal) or different structures (linear or branched). The substrate influences on the activity and recycling stability of the immobilized catalyst were investigated and are discussed. Shorter linear olefin substrates were more easily activated with higher catalyst specific activity, while the catalyst showed recycling stability in hydroformylation of longer and branched olefin substrates. For comparison, PPh3 was externally added to immobilize RhCl3 to –PrPPh2-modified SBA-15. The immobilized catalyst so prepared showed a more flexible immobilizing structure and revealed a promoted turnover number of substrates.

Graphical abstractRhodium chloride (RhCl3) was immobilized to diphenylphosphinopropyl (–PrPPh2)-modified mesoporous silica SBA-15 with or without externally adding PPh3, and the prepared immobilized catalysts were employed in hydroformylation of higher olefins with different lengths, different CC bond positions or different structures. The substrate influences on the activity and recycling stability of the catalysts were investigated.Figure optionsDownload full-size imageDownload high-quality image (188 K)Download as PowerPoint slide

Keywords
SBA-15; Rh–P complex; Hydroformylation; Olefin; Aldol condensation
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Substrate influences on activity and stability of SBA-15–Pr-anchored Rh–P complex catalysts for olefin hydroformylation
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 377, Issues 1–2, 1 April 2010, Pages 114–120
Authors
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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