Muhamad Nazri Murat

Muhamad Nazri Murat
Universiti Sains Malaysia | USM · School of Chemical Engineering

Doctor of Philosophy

About

24
Publications
11,913
Reads
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269
Citations
Citations since 2016
7 Research Items
226 Citations
201620172018201920202021202201020304050
201620172018201920202021202201020304050
201620172018201920202021202201020304050
201620172018201920202021202201020304050
Introduction
Skills and Expertise

Publications

Publications (24)
Article
The semi-batch esterification of propionic anhydride (PA) with 2-butanol (BT) in the presence of catalyst can be optimised using an optimal control strategy, which utilises the reactor temperature (TR) and feed (FR) flowrate. However, the opposing objective functions, which are maximum conversion (XM) and minimum process time (tf) in the autocataly...
Article
In this research, the Feed Forward Neural Network (FFNN) development using Levenberg-Marquardt training method for estimation of fouling thickness layer in Low density polyethylene tubular (LDPE) reactor is performed. The highly exothermic nature of the LDPE polymerization process and the heating-cooling prerequisite in the tubular reactor can crea...
Article
Full-text available
Alumina foam was utilised as a porous medium support for catalyst in a micro combustion process using liquefied petroleum gas (LPG) as fuel. Through wet impregnation method, nickel was deposited onto the surface of alumina foam forming catalytic porous medium for micro combustion. In this study, the performance of micro combustion was investigated...
Article
Full-text available
A cyclic voltammetry study is one of electro analytical chemistry methods which able to study the corrosion of material. In this research, the cyclic voltammetry has been carried out in order to determine the voltage range that contributes to the initiation of the corrosion on the surface of stainless steel in the acidic thiourea solution. In this...
Article
The synthesis of fatty acid methyl ester (FAME) from the high- and low-acid-content feedstock of crude palm oil (CPO) and karanj oil (KO) was conducted over CaO-La2O3-Al2O3 mixed-oxide catalyst. Various reaction parameters were investigated using a batch reactor to identify the best reaction condition that results in the highest FAME yield for each...
Article
Full-text available
Good nonlinear optimization plays a vital role in advanced controller such as nonlinear model predictive control (NMPC). Particle swarm optimization (PSO) is one of nonlinear optimization which has a good potential to be implemented in the NMPC. Even though PSO can determine global optimum value, it is less superior in determining a local minimum v...
Article
Full-text available
In Malaysia, the amount of electronic waste (e-waste) generated in 2008 was stated to be around 688,000 metric tonnes and was forecasted to increase to 1.11 million metric tonnes in the year 2020 [1]. Typical e-waste contains some elements of precious metal, which is mainly generated from the result of the revolution of computer technology. Current...
Article
Full-text available
MTBE is commonly produced using reactive distillation column which combine reactor and distillation column in single unit process. To achieve high MTBE purity and reactant conversion is a challenging task due to strong interaction between control variables and due its highly nonlinear behaviour of the process. In this work, nonlinear model predicti...
Article
The different level of carbon dioxide diffusion in microporous hydrotalcite-silica membrane can be explained by the attractive forces between the molecules and the affinitive medium between molecules of different gas species and the molecular weight of the gases. For a molecular sieve membrane that exhibits high affinity for carbon dioxide, the gas...
Article
Full-text available
This paper presents the fabrication and characterization of platinum-based catalytic microcombustor. The platinum catalyst was deposited onto type-304 stainless steel using the wet impregnation method. The stainless steel undergoes controlled conversion coating treatment in sulfuric acid solution to increase the porosity of its surface before the d...
Conference Paper
Full-text available
Reactive distillation is a process that combines both reactor and distillation column in one unit process. Here, MTBE process in reactive distillation column has been studied to achieve high reaction conversion and purity of MTBE. Controlling such reactive distillation is challenging task due to strong interaction between control variables and high...
Article
Hydrotalcite (HT) materials have been known to be able to adsorb \(\hbox {CO}_{2}\) even at high temperature. However, HT has not been made into a micro-porous membrane because of its meso-porous nature. In order to form a micro-porous HT membrane, silica was selected as a host matrix due to its ability to retain its micro-porosity. In this pape...
Article
Microporous silica membrane containing hydrotalcite (HT) was prepared successfully without losing the former’s molecular sieving property. The microporous HT-silica membrane (200 nm in thickness) was formed on the surface of mesoporous γ-alumina layer (9 μm in thickness) and supported by macroporous α-alumina substrate (ca. 2 mm in thickness). The...
Article
The prepared microporous hydrotalcite (HT)–silica membrane was found to exhibit the molecular sieving characteristic of pristine silica material and high [TEX equation: \mathrm{CO}_{2}] adsorption capacity of HT. The combined properties made enhanced [TEX equation: \mathrm{CO}_{2}] permeability and separability from [TEX equation: \mathrm{CH}_{4}]...
Article
Single permeation test reveals that excessively high sintering temperature caused unnecessary bloating and collapse of micropores to form meso- and macropore structures. It also caused reduction in carbon dioxide adsorption capacity as a result of diminishing affinitive hydrotalcite phase in the pore structures. The carbon dioxide permeance was hig...
Article
Natural gas, refinery gas, and coal gas contain acid gases such as hydrogen sulfide (H2S) and carbon dioxide that must be removed from the gas stream due to the toxicity of H2S and to prevent corrosion to piping and production facility caused by the acid gases. In this article, current technologies for the acid gas removal are selected and reviewed...
Conference Paper
The wet impregnation method for catalytic micro-combustor was characterized by using palladium as a catalyst. The main purpose of this study is to increase the surface porosity of the catalyst support. A high surface porosity indicates that a high amount of catalyst was deposited within the surface areas. The performance of the catalytic micro-comb...
Conference Paper
This paper presents the characterization of a micro-cyclone combustor that burns liquefied petroleum gas. The combustor is made of stainless steel and has a reaction chamber volume of 1.15 cm3. Fuel and air are mixed inside the chamber by injecting the fuel perpendicularly to the tangentially injected air. The experiment demonstrates that the flame...
Article
The performance of a thermoelectric power generator for powering wireless sensor node has been studied and evaluated. This study covers the results obtained from two configurations of thermoelectric cell with heat source temperatures range from 40 to 230 °C. It was found that the highest output voltage is 9.08 V belong to configuration B with two p...
Article
Full-text available
MTBE is a chemical that can be used as anti-knock additive to replace lead additive (tetra ethyl lead) which can be efficiently produced using reactive distillation process. It has been established in the literature that MTBE reactive distillation poses a highly nonlinear behavior due to the combination of reaction and separation processes. A relia...
Article
Full-text available
Methyl Tert-butyl Ether (MTBE) is usually used as solvent, chemical reagent and antiknock additive to improve octane number of gasoline and can be efficiently produced using reactive distillation column. Maximum production of the MTBE can be achieved if the reaction can be kept at optimum operating conditions and column configuration. In practice,...

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