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- Heterogeneous catalysis (7)
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Articles 1 - 30 of 39
Full-Text Articles in Engineering
Synthesis Of Colloidal Stable Linde Type J (Ltj) Zeolite Nanocrystals From Rice Husk Silica And Their Catalytic Performance In Knoevenagel Reaction, Eng-Poh Ng Dr.
Eng-Poh Ng
No abstract provided.
Emt-Type Zeolite Nanocrystals Synthesized From Rice Husk, Eng-Poh Ng Dr.
Emt-Type Zeolite Nanocrystals Synthesized From Rice Husk, Eng-Poh Ng Dr.
Eng-Poh Ng
No abstract provided.
Effects Of Ultrasonic Irradiation On Crystallization And Structural Properties Of Emt-Type Zeolite Nanocrystals, Eng-Poh Ng Dr.
Effects Of Ultrasonic Irradiation On Crystallization And Structural Properties Of Emt-Type Zeolite Nanocrystals, Eng-Poh Ng Dr.
Eng-Poh Ng
No abstract provided.
Detailed Kinetic Observation Revealing The Formation Mechanism Of Chiral Mesoporous Silica (Cms) Synthesized By Cooperative Self-Assembly Of Anionic Chiral Surfactant, Eng-Poh Ng Dr.
Eng-Poh Ng
No abstract provided.
Characterization Of Bovine Serum Albumin Partitioning Behaviors In Polymer-Salt Aqueous Two-Phase Systems, Eng-Poh Ng Dr.
Characterization Of Bovine Serum Albumin Partitioning Behaviors In Polymer-Salt Aqueous Two-Phase Systems, Eng-Poh Ng Dr.
Eng-Poh Ng
No abstract provided.
A Facile And Acid-Free Approach Towards The Preparation Of Sulphonated Multi-Walled Carbon As A Strong Protonic Acid Catalyst For Biodiesel Production, Eng-Poh Ng Dr.
Eng-Poh Ng
No abstract provided.
Novel Lipase Purification Methods - A Review Of The Latest Developments, Eng-Poh Ng Dr.
Novel Lipase Purification Methods - A Review Of The Latest Developments, Eng-Poh Ng Dr.
Eng-Poh Ng
No abstract provided.
Reduction Of Graphene Oxide Nanosheets By Natural Beta Carotene And Its Potential Use As Supercapacitor Electrode, Eng-Poh Ng Dr.
Reduction Of Graphene Oxide Nanosheets By Natural Beta Carotene And Its Potential Use As Supercapacitor Electrode, Eng-Poh Ng Dr.
Eng-Poh Ng
No abstract provided.
Inhibition Of Palm Oil Oxidation By Zeolite Nanocrystals, Eng-Poh Ng Dr.
Inhibition Of Palm Oil Oxidation By Zeolite Nanocrystals, Eng-Poh Ng Dr.
Eng-Poh Ng
No abstract provided.
Effect Of Extra-Framework Cations Of Ltl Nanozeolites To Inhibit Oil Oxidation, Eng-Poh Ng Dr.
Effect Of Extra-Framework Cations Of Ltl Nanozeolites To Inhibit Oil Oxidation, Eng-Poh Ng Dr.
Eng-Poh Ng
No abstract provided.
Kaa507 Notes-1, Eng-Poh Ng Dr.
Emt-Type Zeolite Nanocrystals Synthesized From Rice Husk, Eng-Poh Ng Dr.
Emt-Type Zeolite Nanocrystals Synthesized From Rice Husk, Eng-Poh Ng Dr.
Eng-Poh Ng
No abstract provided.
Reduction Of Graphene Oxide Nanosheets By Natural Beta Carotene And Its Potential Use As Supercapacitor Electrode, Eng-Poh Ng Dr.
Reduction Of Graphene Oxide Nanosheets By Natural Beta Carotene And Its Potential Use As Supercapacitor Electrode, Eng-Poh Ng Dr.
Eng-Poh Ng
No abstract provided.
Recovery Of Bacillus Cereus Cyclodextrin Glycosyltransferase Using Ionic Liquid-Based Aqueous Two-Phase System, Eng-Poh Ng Dr.
Recovery Of Bacillus Cereus Cyclodextrin Glycosyltransferase Using Ionic Liquid-Based Aqueous Two-Phase System, Eng-Poh Ng Dr.
Eng-Poh Ng
No abstract provided.
Microwave Synthesis Of Colloidal Stable Alpo-5 Nanocrystals With High Hydrophilicity And Unique Morphology, Eng-Poh Ng Dr.
Microwave Synthesis Of Colloidal Stable Alpo-5 Nanocrystals With High Hydrophilicity And Unique Morphology, Eng-Poh Ng Dr.
Eng-Poh Ng
No abstract provided.
Solid Imidazolium Halide Catalysts For The Solvent Free Synthesis Of Glycerol Carbonate, Eng-Poh Ng Dr.
Solid Imidazolium Halide Catalysts For The Solvent Free Synthesis Of Glycerol Carbonate, Eng-Poh Ng Dr.
Eng-Poh Ng
No abstract provided.
Halide Aided Synergistic Ring Opening Mechanism Of Epoxides And Their Cycloaddition To Co2 Using Mcm-41-Imidazolium Bromide Catalyst, Eng-Poh Ng Dr.
Halide Aided Synergistic Ring Opening Mechanism Of Epoxides And Their Cycloaddition To Co2 Using Mcm-41-Imidazolium Bromide Catalyst, Eng-Poh Ng Dr.
Eng-Poh Ng
No abstract provided.
Hydroamination Of Cyclohexene Enhanced By Zncl2 Nanoparticles Supported On Chiral Mesoporous Silica, Eng-Poh Ng Dr.
Hydroamination Of Cyclohexene Enhanced By Zncl2 Nanoparticles Supported On Chiral Mesoporous Silica, Eng-Poh Ng Dr.
Eng-Poh Ng
No abstract provided.
Metal Chlorides Supported On Chiral Mesoporous Silica As Highly Active Lewis Acid Catalyst For The Selective Hydroamination Of Cyclohexene, Eng-Poh Ng Dr.
Metal Chlorides Supported On Chiral Mesoporous Silica As Highly Active Lewis Acid Catalyst For The Selective Hydroamination Of Cyclohexene, Eng-Poh Ng Dr.
Eng-Poh Ng
No abstract provided.
Fast Catalytic Oxidation Of Phenol Over Modified Zeolite L Nanocrystals, Eng-Poh Ng Dr.
Fast Catalytic Oxidation Of Phenol Over Modified Zeolite L Nanocrystals, Eng-Poh Ng Dr.
Eng-Poh Ng
Iron modified zeolite L nanocrystals (Fe/KL) were synthesized hydrothermally by the incorporation of Fe3+ in zeolite L lattice. XRD results showed an increase in the inter-planar spacing and lattice parameters. Transition characteristic of the tetrahedral Fe3+ species were observed in the UV–Vis spectrum. The oxidation of phenol in the presence of acetic acid over Fe/KL gave 93.40% conversion in 30 min with selective formation of 77.47% catechol and 22.53% hydroquinone. The catalytic activity was significantly enhanced by the addition of acetic acid. It was found that the acetic acid was oxidized by hydrogen peroxide to form peracetic acid, which served …
Chapter 5 Adsorption, Eng-Poh Ng Dr.
Sulfonic Acid Functionalized Mcm-41 As Solid Acid Catalyst For Tert-Butylation Of Hydroquinone Enhanced By Microwave Heating, Eng-Poh Ng
Eng-Poh Ng
Covalently linked sulfonic acid (-SO3H) modified MCM-41 mesoporous catalysts was prepared, characterized and its catalytic activity under microwave irradiation was evaluated. The NH2-MCM-41 was first prepared by anchoring (3-aminopropyl)triethoxysilane (APTES) on Si-MCM-41 and further reacted with 1,4-butane-sultone to yield the desired acid catalyst. The mesophase and porosity of samples were determined by XRD, TEM and N2 sorption isotherm analyses. The presence of sulfonic acid moiety was confirmed by FT-IR, TG/DTA, sulfur elemental analysis and in situ IR study of pyridine and ammonia adsorptions. The catalyst showed high catalytic activity and high selectivity in tert-butylation of hydroquinone under microwave irradiation. No …
Kaa 507 Surface Analysis (Adsorption), Eng-Poh Ng Dr.
Kaa 507 Surface Analysis (Adsorption), Eng-Poh Ng Dr.
Eng-Poh Ng
No abstract provided.
Extractive Bioconversion Of Cyclodextrins By Bacillus Cereus Cyclodextrin Glycosyltransferase In Aqueous Two-Phase System, Eng-Poh Ng Dr.
Extractive Bioconversion Of Cyclodextrins By Bacillus Cereus Cyclodextrin Glycosyltransferase In Aqueous Two-Phase System, Eng-Poh Ng Dr.
Eng-Poh Ng
No abstract provided.
Ionothermal Approach For Synthesizing Alpo-5 Hexagonal Thin Plate Influenced By Various Parameters At Ambient Pressure, Eng-Poh Ng Dr.
Ionothermal Approach For Synthesizing Alpo-5 Hexagonal Thin Plate Influenced By Various Parameters At Ambient Pressure, Eng-Poh Ng Dr.
Eng-Poh Ng
No abstract provided.
The Immobilization Of Iron(Iii) Aminopyridine Complex On Mcm-41: Its Preparation And Characterization, Eng-Poh Ng Dr.
The Immobilization Of Iron(Iii) Aminopyridine Complex On Mcm-41: Its Preparation And Characterization, Eng-Poh Ng Dr.
Eng-Poh Ng
No abstract provided.
Zeolite Linde Type L As Micro-Solid Phase Extraction Sorbent For The High Performance Liquid Chromatography Determination Of Ochratoxin A In Coffee And Cereal, Eng-Poh Ng Dr.
Eng-Poh Ng
Zeolite Linde Type L (LTL) crystals with different length, diameter and particle size (nanosized LTL, rod LTL, cylinder LTL and needle LTL) were synthesized, characterized and were used as sorbent in the micro-solid phase extraction of ochratoxin A (OTA) before the high performance liquid chromatography detection. Under the optimized conditions, the detection limits of OTA for coffee and cereal were 0.09 ng g−1 and 0.03 ng g−1, respectively, while the quantification limits were 0.28 ng g−1 and 0.08 ng g−1, respectively. The recoveries of OTA of coffee and cereal spiked at 0.5, 10 and 25 ng g−1 ranged from 91.7 …
Capturing Ultrasmall Emt Zeolite From Template-Free Systems, Eng-Poh Ng Dr.
Capturing Ultrasmall Emt Zeolite From Template-Free Systems, Eng-Poh Ng Dr.
Eng-Poh Ng
No abstract provided.
Microscopic Investigation Of Nanocrystalline Zeolite L Synthesized From Rice Husk Ash, Eng-Poh Ng Dr.
Microscopic Investigation Of Nanocrystalline Zeolite L Synthesized From Rice Husk Ash, Eng-Poh Ng Dr.
Eng-Poh Ng
No abstract provided.
Nanosized Molecular Sieves Utilized As An Environmentally Friendly Alternative To Antioxidants For Lubricant Oils, Eng-Poh Ng Dr.
Nanosized Molecular Sieves Utilized As An Environmentally Friendly Alternative To Antioxidants For Lubricant Oils, Eng-Poh Ng Dr.
Eng-Poh Ng
Lubricants play a significant part in current environmental considerations since they are an integral and indispensable component of modern technology. The production, application and disposal of the lubricants have to follow increasingly strict requirements for protecting the environment and living organisms. In this respect, molecular sieve (LTL type zeolite) is investigated as a potential environmentally friendly alternative to traditional antioxidant additives for lubricant oils. Accelerated oxidation experiments using pure base oil and additivated base oil in the presence of the LTL molecular sieve are carried out in parallel, and the oxidation processes are monitored by FT-IR spectroscopy, spectrophotometry, chromatography, total …