搜索结果: 1-7 共查到“无机化学 alumina”相关记录7条 . 查询时间(0.14 秒)
Electro-oxidation of some non-steroidal anti-inflammatory drugs on an alumina nanoparticle-modified glassy carbon electrode
Modified electrode alumina nanoparticle electrocatalysis
2010/10/14
The electro-oxidation of mefenamic acid, diclofenac, and indomethacin on glassy carbon and alumina nanoparticle-modified glassy carbon electrodes in a phosphate buffer solution at physiological pH was...
Template-Free Synthesis of ZSM-5 Type Zeolite Layers on Porous Alumina Disks
ZSM-5 template-free synthesis zeolite layer zeolite membrane
2010/4/19
ZSM-5 crystals were synthesized from template-free batches on macroporous a-alumina disks. The SiO2/Al2O3 ratio of the synthesis gel influenced the crystal morphology, surface coverage and intergrowth...
On-Line Preconcentration and Speciation of Chromium by an 8-Hydroxyquinoline Microcolumn Immobilized on Surfactant-Coated Alumina and Flow Injection Atomic Absorption Spectrometry
Chromium speciation on-line preconcentration 8-hydroxyquinoline alumina flow injection
2010/4/19
An on-line technique for the determination of chromium species with atomic absorption spectrometry is described. The method is based on separation and preconcentration of Cr(III) on a microcolumn of i...
研究了pH值交替变动、水热处理以及表面活性剂对活性氧化铝孔结构的影响。实验结果表明：pH值交替变动可以制备出结晶度高，晶粒大且均匀的拟薄水铝石；水热处理有利于氧化铝结构内铝原子迁移，促进晶粒进一步增长；而表面活性剂能够插入拟薄水铝石层间，减少焙烧过程中层间坍塌和毛细孔收缩，从而有效调控氧化铝孔结构。其中pH值交替变动和水热处理使氧化铝微孔分布向大孔方向迁移，比表面降低；加入表面活性剂使氧化铝微孔...
Cobalt Impregnated Alumina: Nitrogen Adsorption Study at 77 K
Cobalt Impregnated Alumina Nitrogen Adsorption Study 77 K
2010/4/20
Alumina powder is impregnated with cobalt in the concentration range 5% to 20% (w/v) and is characterized by nitrogen adsorption at 77 K by continuous flow method using the Quantasorb sorption system....
Determination of Some of the Physicochemical Properties of Fine Alumina Powders Prepared by Emulsion Evaporation
Alumina powder calcination pore volume sintering surface area thermal analysis
2010/4/23
In order to prepare fine alumina powders, an emulsion was prepared under optimum conditions. The emulsion was examined by optical microscopy and the prepared fine alumina powders were characterised by...
Acidity of Silica-Alumina Catalysts By Amine Titration Using Hammett Indicators and FT-IR Study of Pyridine Adsorption
Acidity of Silica-Alumina Catalysts Amine Titration Hammett Indicators FT-IR Study Pyridine Adsorption
2010/6/30
In this study, characterization and surface acidity of Siral (SiO2-Al2O3) compounds were investigated with Hammett acidity functions, the n-butylamine titration method and FTIR analysis of the spectra...