SYNTHESIS AND CHARACTERISATION OF REUSABLE PVA-SODIUM ALGINATE-Ni CATALYST IN HECK REACTION; [Sintesis dan Pencirian Pemangkin yang Boleh Digunakan Semula dalam Tindak Balas Heck]

• Published in: Malaysian Journal of Analytical Sciences
• Main Author: Abdul Rahman N.A.; Haris N.A.M.; Kassim K.; Musa M.; Said N.R.
• Format: Article
• Language: English
• Published: Malaysian Society of Analytical Sciences 2024
• Online Access: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85198390639&partnerID=40&md5=b9ea2ead5c5f077d8ef777c7fe7eb48c

Heck reaction is a carbon-carbon coupling reaction that essential for the development of natural products, agrochemicals, optical devices and drugs. During the synthesised of chemicals, the presence of catalysts is important. Normally, the reaction is carried out with the presence of palladium metal as catalyst. However, it has disadvantages such as high toxicity and considerably expensive. Compared to palladium, nickel represent a low cost and environmental friendly type metal. Therefore, nickel is effective to replace the palladium in their application as catalyst in Heck reaction. This study produced a Polyvinyl alcohol-sodium alginate-Nickel (PVA-SA-Ni) catalyst by using one pot synthesis method in the ultrasound irradiation system. The benefits in producing a catalyst not only is cost effective but also its reusability properties due to the presence of PVA-SA as a support. The PVA-SA-Ni was successfully synthesised and characterised by using FTIR, XRD, FESEM-EDX and AAS. The catalytic performance and reusability of PVA-SA-Ni was investigated in Heck reaction between 1-bromo-4-nitrobenzene and styrene. The percentage conversion rate of reactant to product was determined by using GC-FID. The PVA-SA-Ni showed the best performance in Heck reaction with 74 % conversion by using 1 mmol % in the presence of K2CO3 as a base at a temperature of 165 °C, and DMA as solvent within 4 h of reaction time. © 2024, Malaysian Society of Analytical Sciences. All rights reserved.