Malaysian Journal of Analytical Sciences Vol 20 No 4 (2016): 856 - 862

DOI: http://dx.doi.org/10.17576/mjas-2016-2004-20

 

 

 

IMMOBILIZATION OF HIGHLY EFFECTIVE PALLADIUM CATALYST ONTO POLY(4-VINYLPYRIDINE): SYNTHESIS AND CHARACTERIZATION

 

(Pemegunan Mangkin Paladium yang Efektif ke atas Poli(4-vinilpiridina): Sintesis dan Pencirian)

 

Siti Kamilah Che Soh¹*, Intan Shafinass Kassim¹, Siti Aminah Jusoh¹, Mustaffa Samsuddin^{2, 3}

 

¹Analytical & Environmental Chemistry Program, School of Marine Science and Environment,

Universiti Malaysia Terengganu, 21030 Kuala Terengganu, Terengganu, Malaysia

²Department of Chemistry, Faculty of Science

 ³Ibnu Sina Institute for Fundamental Science Studies

Universiti Teknologi Malaysia, 81310 Johor Bahru, Johor, Malaysia

 

*Corresponding author: sitikamilah@umt.edu.my

 

 

Received: 24 February 2015; Accepted: 27 October 2015

 

 

Abstract

A commonly known weakness of homogeneous catalysts is the difficulty to recover the active catalyst from the product. Due to the disadvantage, the designing of supported catalyst has been approached to overcome the separation difficulty of the palladium-based homogeneous catalyst. New polymer supported N₂O₂ metal complex was successfully immobilized by mixing of poly(4-vinylpyridine) with palladium(II) complex in the presence of ethyl acetate as solvent. Then, the reaction was stirred for 72 hours at room temperature to form corresponding P₄VP-Pd catalyst. The properties of immobilized catalyst were characterized by various techniques such as fourier transform infrared (FTIR), thermogravimetric (TGA), X-ray diffraction (XRD), scanning electron microscopy/energy dispersive X-ray (SEM/EDX) and inductively coupled plasma-optical emission (ICP-OES) spectroscopy.

 

Keywords:  immobilized catalyst, palladium(II) complex, poly(4-vinylpyridine)

 

Abstrak

Satu kelemahan penggunaan mangkin homogen adalah umum diketahui bahawa kesukaran untuk memperoleh kembali mangkin yang aktif daripada hasil produk. Oleh kerana kelemahan ini, reka bentuk mangkin berpenyokong telah diperkenalkan untuk mengatasi kesukaran pemisahan mangkin homogen berasaskan logam paladium. Kompleks logam N₂O₂ berpenyokong polimer baru telah berjaya dipegunkan dengan mencampurkan poli(4-vinilpiridina) dengan kompleks paladium(II) dengan kehadiran etil asetat sebagai pelarut. Kemudian, campuran tindak balas dikacau selama 72 jam pada suhu bilik untuk menghasilkan mangkin P₄VP-Pd. Sifat – sifat mangkin yang berjaya dipegunkan telah dicirikan dengan pelbagai teknik spektroskopi antaranya infra merah transformasi fourier (FTIR), analisis termogravimetrik (TGA), pembelauan sinar-X (XRD), mikroskopi elektron imbasan/ sinar-X tenaga tersebar (SEM/EDX) dan spektroskopi pancaran optik-aruhan (ICP-OES).

 

Kata kunci:  mangkin terpegun, kompleks paladium(II), poli(4-vinilpiridina)

 

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