L. P. Teh

L. P. Teh
Universiti Kebangsaan Malaysia | ukm · Department of Chemical Sciences

PhD (Chemistry)

About

40
Publications
5,093
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765
Citations
Citations since 2016
33 Research Items
747 Citations
2016201720182019202020212022050100150200
2016201720182019202020212022050100150200
2016201720182019202020212022050100150200
2016201720182019202020212022050100150200
Introduction
Dr. Teh Lee Peng is a senior lecturer at the Department of Chemical Sciences, Faculty of Science and Technology, Universiti Kebangsaan Malaysia. She obtained her Bachelor of Science (BSc. Chemistry) in 2012 and Doctor of Philosophy (PhD. Chemistry) in 2016 from Universiti Teknologi Malaysia. She is also a researcher with expertise on heterogeneous acid-base catalysis field. Her current research focus is on advanced materials for CO2 adsorption and conversion.

Publications

Publications (40)
Article
Full-text available
Recent progress in carbon dioxide (CO2) capture technologies using adsorption techniques has resulted in advances in the fabrication of solid adsorbents. Graphene (2D carbon-based category) nanomaterials have the potential for CO2 capture, owing to their abundantly available material sources, graphitic properties, sole porosity, stability, and cost...
Article
Metal oxide-based core–shell nanoparticles (CSNs) have demonstrated great advantages in CO2 adsorption and utilisation. Metal oxide is an excellent material because of its basicity, which can aid in the production of higher core–shell catalytic reactions. Metal oxide can be employed as a core to reduce pore blockage and increase the shell's surface...
Article
Nowadays, sustaining the atmosphere and protecting it from global warming are recognized as the main concerns of the planet. This problem has been addressed through the development of a number of different carbon capture and sequestration approaches. Lately, metal‐organic framework (MOF) has emerged as the most auspicious CO2 adsorption and convers...
Article
Adsorption has been widely used in waste water treatment due to its simplicity and cost-effective process. One of the popular adsorbent was silica due to their advantageous properties. Immobilizing additive onto particular adsorbent is one of the way to enhance adsorption capacity. Immobilizing ionic liquid (IL) onto silica-based support could alle...
Article
Full-text available
CO methanation has arisen as an attractive research area due to its ability to transform syngas into substituted natural gas. Current monometallic catalysts have a severe problem; quickly deactivated. It is generally known that by introducing another metal to create a bimetallic catalyst, synergistic interaction between both metals considerably enh...
Article
Full-text available
In recent years, there has been growing interest in adsorbents with high surface area, high porosity, high stability and high selectivity for CO2 adsorption. By the incorporation of the additive on the supports such as zeolite, silica, and carbon, the physicochemical properties of the adsorbent and CO2 adsorption performance can be enhanced. In thi...
Article
The modification of solid adsorbents with aminating agents amid severe climate change has been intensively studied. Previous organic carbon dioxide (CO2) sorbent like nanoporous activated carbon develops micropores but can be easily blocked by organic amine molecules during the impregnation process. Therefore, in this study, aminosilanes with diffe...
Article
The mitigation of CO2 and CH4 emissions is feasible by transforming them into valuable syngas via the dry reforming of methane (DRM). However, the problem of catalyst deactivation has restricted its industrial application. Therefore, the development of catalysts for an effective reforming process has been attracted enormous attention. Ceria has a h...
Article
The potentiality of Pt and MoO3 loading on HBEA zeolite in enhancing n-heptane isomerization was investigated. The multiple characterization techniques revealed the engagement of Pt and MoO3 on the lattice or defect structures of the HBEA framework. Furthermore, the occurrence of dealumination was confirmed by the existence of hydrated aluminium-mo...
Article
Vatica Rassak wood waste-derived activated carbon (ACVRW) was employed for lead (Pb(II)) adsorption. Batch adsorption tests were executed to investigate the influences of contact time (t = 0–60 min), ACVRW dosage (m = 0–5 g L⁻¹), initial pH (pH = 2–10), and initial Pb(II) concentration (Co = 10–200 mg L⁻¹) towards Pb(II) elimination. The best adsor...
Article
This work investigates the effectiveness of FS loaded with CaO, MgO, and CeO 2 for CO 2 adsorption. Different techniques such as XRD, ATR-FTIR, Raman, CO 2-TPD, in situ FTIR, FESEM, and TEM were employed. Upon the metal oxides loading, the alteration of textural properties, increases in the weak and moderate basic strength and quantity of basic act...
Article
The rod-like SBA-15 was transformed into fibrous type SBA-15 (F-SBA-15). The Ni/F-SBA-15 was catalytically evaluated in CO2 methanation and compared with conventional Ni/SBA-15. A superior catalytic performance was shown by Ni/F-SBA-15 (CO2 conversion = 99.7%, and CH4 yield = 98.2%) than Ni/SBA-15 (CO2 conversion = 91.1%, and CH4 yield = 87.5%). Th...
Article
Full-text available
The production of hydrogen to be used as an alternative renewable energy has been widely explored. Among various methods for producing hydrogen from hydrocarbons, methane decomposition is suitable for generating hydrogen with zero greenhouse gas emissions. The use of high temperatures as a result of strong carbon and hydrogen (C–H) bonds may be red...
Article
Full-text available
Hydrocracking reaction is one of the major processes in petroleum refining. To date, the exploration of a suitable catalyst for hydrocracking reaction remains challenging. The presence of Pt loaded on Cr 2 O 3 -ZrO 2 promotes the catalytic activity and stability of Cr 2 O 3 -ZrO 2 . While, zirconia has an interesting thermal and mechanical properti...
Article
Catalytic dry reforming of methane (DRM) is a promising way for renewable syngas production due to the utilisation of both CO2 and CH4 greenhouse gases. The current approach was made to improve the catalytic activity and coke resistance by introducing a second metal into the Ni‐based catalytic system. This bimetallic catalytic system showed a signi...
Article
Full-text available
The alarming global warming issue has sparked interest in researchers to mitigate greenhouse gas emissions via CO2 reforming of CH4 (CRM). Regrettably, the main drawback of CRM is catalyst deactivation because of coking and metal sintering. Therefore, exceptional resistance towards coking and sintering is crucial to formulate viable CRM catalysts....
Article
CO2 adsorption is one of the technologies to reduce CO2 from gas mixture in atmosphere which contributes to global warming through greenhouse effect. Hence, many studies have been conducted to explore the most effective techniques for reducing the amount of carbon dioxide in the atmosphere. In this study, effect of different weight percent CuO (5–2...
Article
Green nanocomposite adsorbent based on nanoporous silica (NS) and deep eutectic solvent (DES) mixture of choline chloride–urea (ChCl:U) was synthesized as an alternative for carbon dioxide (CO2) adsorption. The nanocomposite adsorbent was prepared by sol–gel technique with the variations of ChCl:U (mole ratio 1:2) content in NS at 5–15% (w/w). Four...
Article
Full-text available
In this study, typical mesoporous hexagonal rod-typed SBA-15 was successfully transformed into spherical shape with additional dendrimers, namely Dendritic Fibrous SBA-15 (DFSBA-15) by employing microwave-assisted microemulsion system. Physiochemical properties of DFSBA-15 were greatly influenced by aging temperature, urea/TEOS ratio, co-surfactant...
Article
Steam reforming of biomass pyrolysis oil or bio-oil derivatives is one of the attractive approaches for hydrogen production. The current research focused on the development of promising catalysts with favorable catalytic activity and high coke resistance. Noble metal such as Rh has been proven to achieve promising reforming reaction efficiencies. H...
Article
The promotional effect of different types of metals (Ce, Mg, and Zr) over Ni/SBA-15 which synthesized using ultrasonic co-impregnation technique were scientifically evaluated via CO2 reforming of CH4 (CRM). Characterizations including XRD, BET, FTIR, CO2-TPD were done to examine their physical attributes, metal-support interactions, and basicity pr...
Article
One of the significant approaches for syngas (hydrogen and carbon monoxide) production is through dry reforming process in which CO 2 reacted with hydrocarbons such as methane. Current research focuses on new strategies for preparation of new hybrid catalyst with enhanced activity and highly resistant toward carbon deposition. Noble metal catalysts...
Article
The carbon monoxide methanation has possessed huge potential as an effective method to produce synthetic natural gas (SNG). The basic requirements such as high catalytic activity at low temperatures (<500 °C) and high stability throughout all temperatures is needed for an ideal methanation catalysts. The ultimate goal of the study is to examine the...
Article
Full-text available
The capture and storage of CO2 have been suggested as an effective strategy to reduce the global emissions of greenhouse gases. Hence, many studies have been carried out to develop highly efficient materials for capturing CO2. Herein, the CO2 capture performance of mesoporous ceria nanoparticle (MCN) was described. The MCN was synthesized under mil...
Article
Mesoporous silica nanoparticles (MSN) have been widely used for the drug delivery system due to their unique properties such as porous structure, high and tailorable internal and external surface area, as well as functionalizable surface. Due to the abundance of rice husk ash waste (RHA), extensive research had been conducted to convert these waste...
Article
H2 was produced via CO2 reforming of CH4 (CRM) using low-cost Ni/SBA-15 synthesized from palm oil fuel ash (POFA) waste as silica precursor. A series of Ni/SBA-15 were synthesized by employing different Na2SiO3-POFA/P123 mass ratios (2.0, 2.9 and 4.0) and were compared with Ni/SBA-15 prepared from commercial Na2SiO3 (Ni/SBA-15(Comm.)). Na2SiO3-POFA...
Article
The comparative study of different hydrothermal treatment techniques (Reflux (R) and Teflon (T)) and without hydrothermal technique (W) towards efficient CO2 methanation over Ni/SBA-15 was discussed. X-ray diffraction (XRD), inductive coupling plasma-atomic emission spectroscopy (ICP-AES), N2 adsorption-desorption isotherms (BET), Fourier transform...
Article
A series of Ni-Ce/SBA-15 catalysts with 6 wt% Ce and 5 wt% Ni were synthesized using conventional impregnation (Ni-Ce/SBA-15(C-‎IM)), ultrasonic-assisted ‎impregnation (Ni-Ce/SBA-15(US-IM)) and reflux-assisted impregnation (Ni-Ce/SBA-15(R-IM)) methods The samples were characterized using XRD, TEM, SEM, BET, FTIR, H2-TPR, XPS and TGA. The characteri...
Article
Amorphous TiO2 (AT) nanoparticles were prepared by a simple sol-gel method and subsequent incorporation with copper (5-20 wt%) via an electrochemical method in the presence of a supporting electrolyte, tetraethylammonium perchlorate (TEAP), was used to synthesize CuO/TiO2 (CAT) catalysts. The physicochemical properties of the catalysts were studied...
Article
Full-text available
Nickel-promoted mesoporous ZSM5 (Ni/mZSM5) was prepared for CO methanation. XRD, NMR and SEM analysis confirmed the structural stability of Ni/mZSM5 with coffin type morphology. The nitrogen physisorption and pyrrole adsorbed FTIR analyses indicated the presence of micro–mesoporosity and a moderate amount of basic sites on both mZSM5 and Ni/mZSM5....
Article
Full-text available
The Ir/Pt-HZSM5 with different iridium loading (0.3-1.0 wt%) was prepared by impregnation of iridium on Pt-HZSM5. The acidic properties of Ir/Pt-HZSM5 were studied by FTIR spectroscopy, while the activity of the catalysts was tested for n-pentane isomerization in a microcatalytic pulse reactor. The IR results of adsorbed 2,6-lutidine showed that al...

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