搜索结果: 1-15 共查到“工学 Sol-gel”相关记录49条 . 查询时间(0.164 秒)
The sol-gel derived Co-Mn/TiO2 catalysts for light olefins production
Fischer-Tropsch synthesis light olefins characterization
2014/2/28
In this research work, two 30%(Co-Mn)/TiO2 catalysts were prepared using sol-gel (catalyst A) and co-precipitation (catalyst B) methods. The activity and selectivity to C2~4 light olefins in Fischer-T...
Low temperature CO oxidation over mesoporous CuFe2O4 nanopowders synthesized by a novel sol-gel method（图）
Carbon monoxide oxidation CuFe2O4 solid solution Sol-gel Nanopowder Propylene oxide Iron oxide
2013/9/16
Mesoporous CuFe2O4 solid solution nanopowders with high specific surface areas were synthesized by a novel, very simple and inexpensive sol-gel route using propylene oxide as gelation agent, and used ...
Microwave Assisted Sol-Gel Synthesis of MgO Nanoparticles and Their Catalytic Activity in the Synthesis of Hantzsch 1,4-Dihydropyridines（图）
magnesium oxide microwave-assisted sol-gel method nanoparticle Hantzsch 1,4-dihydropyridine
2012/9/11
A microwave-assisted sol-gel method was employed for the preparetion of nano-sized MgO particles using Mg(NO3)2·6H2O as precursor and deionized water as solvent. The sample calcined at 500 °C had a hi...
Sol-Gel Materials with Pesticide Delivery Properties
Sol-Gel Tetraethylorthosilicate Colloidal Silica Trichlorfon Cyclodextrin
2010/9/13
Pesticides are widely used in agriculture, although they may create hazards both to humans and to the environment. In order to reduce the harmful effects of their administration, there has been made a...
Physical Characteristics of Titania Nanofibers Synthesized by Sol-Gel and Electrospinning Techniques
Titania Nanofibers Synthesized Sol-Gel Electrospinning Techniques
2010/1/1
Titania nanofibers were successfully synthesized by sol-gel coating of electrospun polymer nanofibers followed by calcining to form either the pure anatase or rutile phases. Characterization of these ...
Design of Solid Catalysts by Sol-gel Method Using Organic Polydentate Ligands and Their Catalytic Performance
Solid catalyst Catalyst design Sol-gel method Thermostable metal oxide
2009/8/4
Advantages and effectiveness of using an organic polydentate ligand in the sol-gel process were discussed. The sol-gel method using the ligand was presented herein for preparation of metal oxides inc...
Bimodal Porous Co-Ir-SiO2 Catalysts Prepared by Sol-gel Process with Alkoxide for Fischer-Tropsch Synthesis
Alkoxide Bimodal pore structure Cobalt catalyst Fischer-Tropsch synthesis
2009/7/28
Bimodal porous catalysts were prepared by modifying the surface of macro-porous silica (Q-10, Q-30 and Q-50) with 20 wt%Co-0.5 wt%Ir-SiO2 prepared by the alkoxide method, and used for the Fischer-T...
FT-IR Spectroscopic Study of the Reaction Mechanism for Selective Reduction of NO over Sol-gel Prepared In2O3-Ga2O3-Al2O3 Catalysts
Nitrogen monoxide selective reduction Propene Gallium oxide catalyst
2009/7/24
The catalytic activity of Ga2O3-Al2O3 for the selective reduction of NO with propene was inhibited by the presence of H2O, whereas the catalytic activity of In2O3-Ga2O3-Al2O3 was significantly promot...
Dynamic Light Scattering Analysis on Critical Behavior of Cluster Size Distribution of Polyacrylamide and Agarose Solutions near the Sol-Gel Transition Point
agarose percolation dynamic light scattering
2009/7/8
The dynamic light scattering (DLS) method was applied to measure the cluster radii of polyacrylamide and agarose solutions near the sol-gel transition point. In the case of polyacrylamide, primary clu...
Structure and electrorheological properties of nanoporous BaTiO3 crystalline powders prepared by sol-gel method
Porous BaTiO3 Electrorheological properties Sol–gel
2009/6/14
In this paper, a novel nanoporous barium titanate (BaTiO3) crystalline powder was synthesized by using triblock poly(ethylene oxide) (PEO) and poly(propylene oxide) (PPO) based systems (P-123) as the ...
Alumina Coating on Carbon Fibers by Sol-Gel Method
Sol-gel method Aluminum alkoxide Carbon fiber Coating
2009/5/5
Alumina precursor film was coated on carbon fibers by a sol-gel method using aluminum alkoxide solution. The optimum coating condition for the concentration of alumina alkoxide and silane coupling ag...
Optical humidity sensing behaviour of sol–gel processed nanostructured ZnO films
humidity sensors optical fiber
2009/3/10
This paper reports the humidity sensing behaviour of sol–gel processed ZnO films deposited on U-shaped borosilicate rods as substitute of optical fiber having the same radius of curvature. The films p...
Red-emitting LiEuW2O8 phosphor for white emitting diodes prepared by sol–gel process
phosphors sol–gel near-UV
2009/2/10
Scheelite-type LiEuW2O8 (LEW) phosphors with the optical function of color conversion from near-UV to red were prepared by sol–gel method using a lithium acetate dehydrate, europium(III) nitrate pent...
Silica-based versus silica-titania sol–gel materials – comparison of the physical properties: surface tension, gelation time, refractive index and optical transmittance
silica-titania sol–gel materials surface tension
2009/1/6
Knowledge of the physical parameters and optical constants of sols and sol–gel materials is important in view of their possible applications. In this work, silica and silica-titania sols were examined...
Sol-Gel法制备NiTiSMA/FC复合材料的界面结构研究
复合材料 界面结构 薄膜
2008/11/6
借助XRD、SEM研究了Sol-Gel法制备NiTiSMA/FC薄膜复合材料在650℃晶化退火处理后的界面结构。结果表明，陶瓷薄膜层的约束抑制了NiTiSMA基体的高温时效反应；由于NiTiSMA基体表面的高温氧化产生的TiO2过渡层，使NiTiSMA与铁电陶瓷两异质之间良好结合。