A5008027839- Catalytic Processes in Materials Science
- Catalysts for Methane Reforming
- Catalysis and Oxidation Reactions
- Catalysis and Hydrodesulfurization Studies
- Advancements in Solid Oxide Fuel Cells
- Carbon dioxide utilization in catalysis
- Catalysis for Biomass Conversion
- Thermochemical Biomass Conversion Processes
- Chemical Synthesis and Reactions
- Metallurgical Processes and Thermodynamics
- Electrocatalysts for Energy Conversion
- Enzyme Catalysis and Immobilization
- Nanomaterials for catalytic reactions
- Ammonia Synthesis and Nitrogen Reduction
- Molten salt chemistry and electrochemical processes
- Biodiesel Production and Applications
National University of Singapore
2011-2017
The effect of Na loading on the water–gas shift (WGS) activity Ni/xNa/CeO2 (with x = 0, 0.5, 1, 2, 5, and 10 wt %) catalysts has been investigated. Ni/2Na/CeO2 exhibited highest performance in terms WGS methane suppression. Through H2-TPR XRD, solubility limit Na+ CeO2 was found to be 2 %. At low loadings (0.5 %), incorporated into lattice, generating a lattice strain activating O2, thereby increasing reducibility catalyst. However, beyond %, deposited surface, retarding XPS spectra reveal...
Various Ni catalysts were synthesized by combining a high surface area SBA-15 support, novel preparation method using an oleic acid precursor to obtain highly dispersed and small particles, the basic property of La.
Ni@Ni-Mgphy (Ni-Mgphy = Ni–Mg phyllosilicate) core–shell catalysts were designed by hydrothermally treating Ni@SiO2 nanoparticles with magnesium nitrate salt. The porosity and basicity of the easily tuned forming Ni-Mgphy shell using Ni originating from during hydrothermal treatment process Mg(NO3)2 as Mg sources, respectively. Among synthesized under different durations, catalyst treated for 10 h achieved best catalytic performance CO2 reforming CH4 reaction stable conversions around 81%...
Reaction mechanism for steam reforming of toluene is proposed La 0.8 Sr 0.2 Ni Fe O 3 perovskite catalyst. The was derived from various characterization results such as temperature‐programmed desorption (TPD) and surface reaction (TPSR) water, TPSR toluene, TPD 2 in situ DRIFT decomposition, toluene. Five kinetic models were developed based on the dual‐site using Langmuir–Hinshelwood approach. Subsequently, parameters estimated by nonlinear least square regression. A good agreement obtained...
The WGS mechanism strongly depends on the Ni–Cu surface composition.
High catalytic performance of Ni/La<sub>0.8</sub>Sr<sub>0.2</sub>AlO<sub>3</sub> catalyst due to high amount mobile lattice oxygen which favors direct partial oxidation toluene while gas-phase complete oxidation. Both species actively oxidize coke deposited on surface, conferring coking resistance.
Abstract Catalytic biomass gasification is an environmentally benign solution to energy problems. A series of Ni catalysts on mesoporous SBA‐15 are synthesized with various La 2 O 3 loadings. The catalytic activity unpromoted Ni/SBA‐15 catalyst indicates that it has a high carbon formation rate, resulting in fast deactivation. In contrast, addition helps remove deposited by oxycarbonate, higher CO production. 1 % doping the sufficient achieve and stability raw materials steam reforming...
Sequential impregnation of Sr on Ni/La<sub>2</sub>O<sub>3</sub> catalyst has higher activity than co-impregnation and Ni La<sub>2</sub>O<sub>3</sub> support in steam reforming biomass tar with toluene as the model compound due to presence amount surface which helps water adsorption.
Abstract Highly dispersed bimetallic Ni‐Cu core encapsulated by a CeO 2 shell catalyst has been synthesized combination of positive emulsion and the self‐assembly method. Several characterization techniques were implemented to investigate core–shell structure its unique properties. Field‐emission TEM, X‐ray diffraction, photoelectron spectroscopy, N O chemisorption analyses showed that uniform particles with an average size 3.4 nm narrow distribution 4.3–5.4 formed. 10 wt % exhibited high...
Synergistic effect of Ni–Cu with La<sub>2</sub>O<sub>3</sub>–CeO<sub>2</sub> for high sulfur resistance in water gas shift reaction.
A B S T R C TSulfonated polyvinyl alcohol (PVA) can be used as a heterogeneous catalyst in esterification or transesterification reactions during methyl ester production. This with PVA support has the potential to commercially like Amberlyst 46. However, there are several drawbacks conventional methods produce sulfonated compared In this paper, various processes of synthesis will discussed including advantages and disadvantages The catalysts carried out using sulfosuccinate acid reagents...
Abstract Review: 146 refs.
Polivinil alkohol tersulfonasi merupakan katalis asam heterogen yang potensial untuk produksi metil ester lemak (FAME). Katalis (PVA/SSA) disintesis melalui reaksi esterifikasi antara polivinil (PVA) dan sulfosuksinat (SSA). Penelitian ini bertujuan mempelajari pengaruh beberapa variabel proses seperti berat molekul (MW) PVA, tahap pencucian dengan metanol, kondisi annealing (waktu, suhu, tekanan annealing), suhu pengeringan terhadap kinerja PVA/ SSA dalam metanol bebas (FFA). PVA berhasil...