Effect of temperature on the sorption characteristic of carbon nanotubes by Abdul Majid, Zaiton, Buang, Nor Aziah, Sanip, Suhaila, Adan, Daliza, Ismail, Ahmad Fauzi

“…Hydrogen adsorption was carried out at room temperature, 77K, 70 °C while hydrogen desorption was carried out at 70 °C. …”
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Effects of the activation temperature on the polyacrylonitrile / acrylamide-based activated carbon fibers by Yusof, Norhaniza, Ismail, Ahmad Fauzi, Rana, Dipak, Matsuura, Takeshi

“…Polyacrylonitrile (PAN)/acrylamide (AM) precursor fibers prepared using a solvent-free coagulation process were stabilized, carbonized, and physically activated by carbon dioxide (CO2) into activated carbon fibers (ACFs). The activation temperature varied from 800 to 900 °C while the activation time was 60 minutes. …”

Effects of stabilization temperature on the chemical and the physical properties of polyacrylonitrile stabilized fibers by Yusof, Norhaniza, Ismail, Ahmad Fauzi, Jaafar, Juhana, Wan Salleh, Wan Norharyati, Hasbullah, Hasrinah

“…The mechanical strengths of the SFs were obtained from the Young Modulus and the tensile strength analyses. Stabilization temperature at 275oC had been identified as the optimum stabilization temperature for the PAN/AM fibers.…”

Dynamic delivery analysis of adsorptive natural gas storages at room temperature by Ridha, Firas Noori, Yunus, Rosli M., Rashid, Mohd., Ismail, Ahmad Fauzi

“…This work analyzes the performance of adsorptive natural gas (ANG) storage during dynamic discharge phase at room temperature. Various aspects of the dynamic system were studied, however, emphasis was given to the delivery capacity of the storage cylinder since it is the absolute measure of ANG storage system viability. …”

Gas permeation study of carbon tubular membrane by manipulating carbonization temperature profile by Wan Salleh, Wan Norharyati, Sazali, Norazlianie, Hasbullah, Hasrinah, Yusof, Norhaniza, Jaafar, Juhana, Ismail, Ahmad Fauzi

“…Results showed that the suitable carbonization temperature for Matrimid-based carbon tubular membrane was at 850 °C. …”

Investigation on the effect of sintering temperature on kaolin hollow fibre membrane for water application by Mohtor, Nur Hamizah, Othman, Mohd. Hafiz Dzarfan, Ismail, Ahmad Fauzi, Rahman, Mukhlis A., Jaafar, Juhana, Abdulhameed, Mohammed Abdulmunem

“…Ceramic membrane has the ability to surpass the utilisation of polymeric membrane in the application that requiring high temperature and pressure condition, as well as harsh chemical environment. …”

Effect of sintering temperature on physical properties of bauxite-based hollow fiber membrane by Mohamad Esham, Mohamad Izrin, Othman, Mohd. Hafiz Dzarfan, Ismail, Ahmad Fauzi, Abdul Rahman, Mukhlis, Jaafar, Juhana, Ismail, Nurul Jannah

“…Effect of sintering temperature between 1250°C and 1450°C on membrane porosity, size of membrane pore, hydrophilicity, mechanical strength and water permeation were examined and the results were analyzed to determine the most suitable hollow fiber membrane for the application. …”
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Gas permeation properties of the matrimid based carbon tubular membrane: the effect of carbonization temperature by Wan Salleh, Wan Norharyati, Ismail, Ahmad Fauzi, Yusof, Norhaniza, Sazali, Norazlianie, Nordin, Nik Abdul Hadi Sapiaa @ Md., Harun, Zawati

“…The polymer tubular membrane was carbonized under Argon atmosphere at different carbonization temperature of 600, 750, and 850 °C. Pure gas permeation tests were performed using CO2 and N2 at room temperature with pressure 8 bars. …”

Thermal transient behavior of an ANG storage during dynamic discharge phase at room temperature by Ridha, Firas Noori, M. Yunus, Rosli, Rashid, Mohd., Ismail, Ahmad Fauzi

“…The results demonstrated that maximum methane discharge rate of 5 L min1 in activated carbon/methane system resulted in the severest temperature drop corresponding to further drop of about 40% compared to that at 1 L min-1. …”

Effect of reaction temperature and flow rate of precursor on formation of multi-walled carbon nanotubes by Tee, Jia Chee, Aziz, Madzlan, Ismail, Ahmad Fauzi

“…The effect of reaction temperature and flow rate of precursor on the quantity and quality of the multi-walled carbon nanotubes (MWNTs) produced by catalytic chemical vapour deposition (CCVD) was studied. …”
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Separation of CO2/CH4 through carbon tubular membranes: effect of carbonization temperature by Wan Salleh, Wan Norharyati, Sazali, N., Ismail, Ahmad Fauzi

“…carbon membranes have received much attention as advance materials in the gas separation technology due to their superior gas permeation performance and thermal and chemical stability. in order to increase the mechanical strength of the membrane, supported carbon membrane were produced using ceramic tube as support layer. carbon tubular membranes were produced by carbonizing polymeric tubular membrane under different process parameter. in this study, carbon tubular membranes originating from matrimid were prepared and characterized in term of its gas permeation properties. the preparation method involved dip-coating of the ceramic tubes with a matrimid-based solution. the carbon tubular membranes were obtained by carbonization of the resultant polymeric tubular membrane under argon gas flow in the horizontal tube furnace. the effects of the carbonization temperature on the gas permeation performance were investigated. pure gas permeation tests were performed using co2 and ch4 at room temperature with pressure 8 bars. the permeance and selectivity data indicate that the highest co2/ch4 selectivity of 87.30 was obtained for carbon tubular membrane prepared at carbonization temperature of 850ºc.…”

Thermal analysis of adsorptive natural gas storages during dynamic charge phase at room temperature by Ridha, Firas Noori, Yunus, Rosli M., Rashid, Mohd., Ismail, Ahmad Fauzi

“…However, higher adsorption capacity claimed more extreme thermal fluctuation represented by a temperature rise of 99.2 °C at the center region of the bed charged continuously with methane at 1 L min−1 up to pressure of 4 MPa, corresponding to 82.5 °C in AC-D bed. …”

Fabrication and modification of temperature FBG sensor: role of optical fiber type and Cu sputtered thickness by Khong, Nee Koo, Ismail, Ahmad Fauzi, Othman, Mohd. Hafiz Dzarfan, Samavati, Alireza, Zhong, Sheng Tai, A. Rahman, Mukhlis, Bakhtiar, Hazri, Mat, Muhammad Aizi

“…In the temperature range of 30 °C to 80 °C, the step-index multimode FBG exhibits the highest temperature sensitivity of 11.8 pm °C-1 compared to single-mode and graded-index multimode FBG with the sensitivities of 10.5 pm °C-1 and 11.4 pm °C-1, respectively. …”

Development of composite ceramic/polymeric hollow fibre membrane for water separation at low pressure and ambient temperature by Raffi, Amirul Afiat, Yusof, Noor Fadilah, Othman, Mohd Hafiz Dzarfan, Jaafar, Juhana, Ismail, Ahmad Fauzi, Abas, Khairul Hamimah, Muhamad Sidek, Mohd Akhmal, Abas, Mohd Firdaus, Yahaya, Nur Zhatul Shima, Rahman, Mukhlis A.

“…This study proposed an enhanced water purification separation that was carried out at ambient temperature and low-pressure system. ZnO and PVA layers were deposited on the outer surface of Al2O3 hollow fibre membrane, and this composite membrane was used to separate synthetic salt solutions with a concentration of 40,000 ppm. …”

Improving properties of thin film nanocomposite membrane via temperature-controlled interfacial polymerization for nanofiltration process by Seah, Mei Qun, Lau, Woei Jye, Goh, Pei Sean, Ooi, Boon Seng, Lai, Gwo Sung, Ismail, Ahmad Fauzi

“…Typically, polyamide composite membranes are fabricated at room temperature, ignoring the potential impact of reaction temperature. …”

Electerochemical study of speek/cloisite 15a (r)/tap membrane at moderate temperature for DMFC application by Ilbeygi, H., Ismail, Ahmad Fauzi, Nasef, Mohamed Mahmoud, Jaafar, J., Jalalvandi, E., Panahi, P.

“…The membranes were prepared via solution intercalation method, before they were subjected to performance tests in the temperature range of 27 to 80 oC for comparison with Nafion® 117. …”

Aqueous room temperature synthesis of zeolitic imidazole framework 8 (ZIF-8) with various concentrations of triethylamine by Md. Nordin, Nik Abdul Hadi, Ismail, Ahmad Fauzi, Mustafa, Azeman, Goh, Peisean S., Rana, D., Matsuura, Takeshi

“…In this study, a zeolitic imidazole framework (ZIF-8) was prepared, and physico-chemical characterizations were performed to investigate the influences of triethylamine (TEA) on the crystallinity, particle size, morphology, and defects of ZIF-8 synthesized via an aqueous room temperature approach with a relatively low molar ratio of ligands to metal salts. …”
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Transport behavior of proton and methanol in SPEEK/Cloisite 15A/TAP composite membranes at varies temperature by Jaafar, Juhana, Aziz, Madzlan, Ismail, Ahmad Fauzi, A. Rahman, Mukhlis, Othman, Mohd. Hafiz Dzarfan, Yusof, Norhaniza, Wan Salleh, Wan Norharyati, Nik Mustofar, Nik Nurdhiya

“…The investigation on the transport behavior of proton and methanol in sulfonated polyether ether ketone (speek) composite membrane under various temperatures (room temperature to 80°c)has been conducted. the speek/closite 15a/tap composite membranes were prepared via solution intercalation method. the resulting membranes were characterized by evaluating their physicochemical properties in terms of water uptake, proton conductivity and methanol permeability prior to direct methanol fuel cell application. it was found that the proton conductivity and methanol permeability of the composite membranes increased with the rise of temperature. the highest selectivity valueof 9.6 xlo4 sscm'3of speek/cloisite 15a/tap membrane was recorded at 60°cwith the proton conductivity o f 7.87 xlo'3scm‘‘ and 4.88xl0‘7cmi s'1 methanol permeability which was higher compared to nafion 117 membrane which was only 3.4xl04 sscm'3. this was mainly contributed by the methanol permeability which was found to be lower than that o f nafion 117 membranes at all investigated temperatures. speek/cloisite 15a/tap composite membrane exhibited higher activation energy, e,(15.9 kj/mol) in comparison to the nafion 117 membrane (9.20 kj/mol). the e, value of the composite membrane was in agreement with the e, for proton transport mechanism (vehicle and grotthus) which is in the range of 14-40 kj/mol therefore, it can be concluded that the proton transport in the composite membrane is contributed by both hopping and vehicle mechanisms and the protons travel a direct path through both polymer and inorganic fillers phase, while methanol has more tortuous path around the cloisite 15a particles with the increasing of temperature.…”

The influence of carbonization temperature on the development of carbon membrane with superior CO2/CH4 separation performance by Sazali, Norazlianie, Wan Salleh, Wan Norharyati, Mohamad, Azuwa Mohamed, Ismail, Nor Hafiza, Rosman, Nurafiqah, Aziz, Farhana, Ismail, Ahmad Fauzi

“…The manipulation of carbonization temperatures was requ ired to see if it could enhance the permeation properties as desired. …”

A new potential polymeric cladding material for polycarbonate fibre optic core for high temperature use by Moslan, Mohd. Shahrizan, Othman, Mohd. Hafiz Dzarfan, Samavati, Alireza, Mat Salim, Muhammad Aizi, A. Rahman, Mukhlis, Ismail, Ahmad Fauzi, Bakhtiar, Hazri, Mohd. Sokri, Mohd. Nazri

“…The selection of a suitable cladding material for a fibre optic is crucial, and the application of polymeric material in high temperature conditions is garnering much attention from many researchers. …”