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A novel catalyst containing palladium nanoparticles supported on poly(2-hydroxyethyl methacrylate)/CMK-1: Synthesis, characterization and comparison with mesoporous silica nanocomposite

Paper ID Volume ID Publish Year Pages File Format Full-Text
41002 45874 2012 13 PDF Available
Title
A novel catalyst containing palladium nanoparticles supported on poly(2-hydroxyethyl methacrylate)/CMK-1: Synthesis, characterization and comparison with mesoporous silica nanocomposite
Abstract

A novel catalyst containing palladium nanoparticles supported on poly(2-hydroxyethyl methacrylate)/CMK-1 (Pd-PHEMA/CMK-1) was prepared, and its application was investigated as a heterogeneous catalyst in Heck coupling reaction. PHEMA/CMK-1 was prepared by in situ polymerization method and used as a support for palladium nanoparticles obtained through the reduction of palladium acetate by hydrazine hydrate. The structural and morphological characterizations of Pd-PHEMA/CMK-1 nanocomposite were carried out using XRD, FT-IR, BET, TGA, XPS, UV–vis, SEM and TEM techniques. This catalytic system exhibited good activity in cross-coupling reactions of aryl iodides, bromides and also chlorides with olefinic compounds in Mizoraki–Heck reactions in short reaction time and high yields. The catalytic activity of this purely organic hybrid catalyst was compared with Pd-PHEMA/MCM-48 to clarify the advantages of mesoporous carbon on mesoporous silica as support. The results showed that the activity and reusability of Pd-PHEMA/CMK-1 was much higher than Pd-PHEMA/MCM48 in Heck reaction.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (204 K)Download as PowerPoint slideHighlights► Pd-PHEMA/CMK-1 nanocomposite was prepared as a novel heterogeneous catalyst. ► CMK-1 acted as an ideal support for Pd-poly(2-hydroxyethyl methacrylate). ► The nanocomposite showed reasonable activity for Heck reaction in water. ► Pd-PHEMA/CMK-1 showed higher thermal stability than Pd-PHEMA/MCM-48.

Keywords
Nanocomposite; Mesoporous carbon; Pd nanoparticles; Heck reaction; Water
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A novel catalyst containing palladium nanoparticles supported on poly(2-hydroxyethyl methacrylate)/CMK-1: Synthesis, characterization and comparison with mesoporous silica nanocomposite
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volumes 423–424, 7 May 2012, Pages 78–90
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