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Anchored Pd-complexes in mesoporous supports: Synthesis, characterization and catalysis studies for carbonylation reactions

Paper ID Volume ID Publish Year Pages File Format Full-Text
55200 47043 2012 20 PDF Available
Title
Anchored Pd-complexes in mesoporous supports: Synthesis, characterization and catalysis studies for carbonylation reactions
Abstract

Pd(pyca)(PPh3)(OTs) [pyca = 2-picolinate] complex is efficiently anchored inside different mesoporous matrices, such as MCM-41, MCM-48, SBA-15 using a molecular aminopropyl tether moiety employing different synthesis strategies. Thorough characterization of the materials using powder XRD, multinuclear (13C, 29Si, 31P) CP-MAS NMR, XPS, SEM, N2-sorption studies etc. confirmed the successful anchoring of the palladium complex to the walls of the support matrices thus establishing the synthesis protocols unambiguously. The catalysts were found to be highly active and selective for the carbonylation of different aryl olefins and alcohols. Consecutive recycling and successful reuse proved the stability and true heterogeneous nature of all the anchored catalysts, which is a substantial advancement over the existing heterogeneous catalysts for carbonylation.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (83 K)Download as PowerPoint slideHighlights► Novel immobilized Pd complex catalyst for carbonylation. ► High activity, regio-selectivity and stability demonstrated. ► Comparison of homogeneous and immobilized catalysts. ► Application for synthesis of pharmaceuticals (2-aryl propionic acids) demonstrated. ► Immobilization approach has significant advantage in catalyst–product separation.

Keywords
Immobilization; Anchored catalysts; Mesoporous materials; Palladium complex; Carbonylation
First Page Preview
Anchored Pd-complexes in mesoporous supports: Synthesis, characterization and catalysis studies for carbonylation reactions
Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Today - Volume 198, Issue 1, 30 December 2012, Pages 154–173
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis