POTENTIAL OF PALM KERNEL SHELL (PKS) AS CARBON SUPPORT TO BIMETALLIC CATALYST (Mn-Ce) IN HYDROCARBON SELECTIVE CATALYTIC REDUCTION OF NOx

TAN YONG, CHIN (2015) POTENTIAL OF PALM KERNEL SHELL (PKS) AS CARBON SUPPORT TO BIMETALLIC CATALYST (Mn-Ce) IN HYDROCARBON SELECTIVE CATALYTIC REDUCTION OF NOx. [Final Year Project Report] (Unpublished)

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Abstract

Palm Kernel Shell (PKS) derived Activated Carbon (AC) has been chosen to be studied for its potential as the catalyst support to bimetallic catalyst in Hydrocarbon Selective Catalytic Reduction (HC-SCR) of NOx. The catalysts, Mn/PKS, Ce/PKS and Mn-Ce/PKS were prepared by using deposition precipitation method and calcination was performed at 250°C under ambient air. The catalysts and PKS were then characterized using Brunauer-Emmett-Teller method (BET), X-Ray Fluorescence (XRF), Hydrogen Temperature-Programmed Reduction (H2-TPR) and Fourier Transform Infrared Spectroscopy (FTIR). The results indicate the successfulness of anchoring metal oxides on the catalyst. The catalysts and PKS were then tested with the exhaust from diesel engine at the flow rate of 1 L/min for preliminary study of de-NOx ability. Most of the catalysts show better NOx reduction efficiency at low temperature evidencing the potential of palm kernel shell as the catalyst support in low temperature HC-SCR system. PKS and Mn-Ce/PKS have the optimum operating temperature of 220°C while Mn/PKS and Ce/PKS optimum operating temperature were at 140°C and 300°C respectively. All catalysts exhibit NOx reduction less than 60% in this experiment possibly due to weak metal –support interaction and excessive metal loadings.

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