搜索结果: 1-12 共查到“无机化学 adsorption”相关记录12条 . 查询时间(0.064 秒)
氨基改性介孔二氧化硅的制备及其吸附性能研究（Macroporous Silica: Surface Modification and Adsorption Properties）
介孔材料 改性 扩孔 3-氨丙基三乙氧基硅烷 吸附
2010/8/24
合成了一种具有较大孔径的氨基改性介孔二氧化硅材料(m-MCF)。通过XRD、TEM、低温氮吸附、TGA、FTIR以及原子吸收光谱(AAS)等表征方法对产物的结构和性能进行的分析表明:利用三甲基苯为扩孔剂制备得到的介孔材料具有较大的孔径，有利于功能基团对孔内表面的改性。当氨基改性介孔材料后，该材料仍然保留较大的孔径(22 nm)和较高的比表面积(444 m2·g-1)。研究发现:与改性而未扩孔的介孔...
KIT-1介孔分子筛的化学修饰及吸附性能（Chemical Modification and Adsorption of the Pure Silica Mesoporous Molecular Sieve KIT-1 ）
介孔分子筛 KIT-1 化学修饰 吸附容量 水热稳定性
2010/8/25
The pure silica mesoporous molecular sieve (KIT-1) was chemically modified using both organic and inorganic precursors and characterized using FTIR, XRD, MAS NMR, TG-DSC and physical adsorption-desorp...
Cu-MCM-41介孔分子筛中不同价态铜上的吸附性能研究（Adsorption Behavior of Copper with Different Valences States in Cu-MCM-41）
Cu-MCM-41 介孔材料 CO吸附 C2H4吸附 吸附量热 红外光谱
2010/8/25
合成了不同铜含量的Cu-MCM-41，高温还原后仍具有良好的介孔结构。孔壁中的铜容易被H2还原为Cu(0)。通过在氦气流中加热，可以导致孔壁中的Cu(II)还原为Cu(I)。MCM-41中不同价态的铜具有不同的吸附性能：Cu(0)强烈吸附O2，吸附热高达427 kJ·mol-1；Cu(I)在室温下几乎不吸附O2，表明Cu(I)在室温下较稳定；而Cu(I)在对CO与C2H4的吸附中，除了CO的吸附热...
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....
Kinetics Study of Lead ion Adsorption on Active Carbon
Kinetics Study Lead ion Adsorption Active Carbon
2010/4/20
The kinetics of the adsorption of lead ions on active carbon from aqueous solutions was studied at room temperature at different lead ion concentrations (i.e. 0.1-0.5 g/L). The kinetics of the lead io...
Adsorption of Arsenate and Chromate from Waters on Hydrophobized Zeolitic Media
Octadecylammonium-clinoptilolite adsorption anion-exchange chromate and arsenate oxyanions montmorillonite
2010/4/21
A laboratory setup was used to examine the uptake of chromate and arsenate from aqueous solutions by octadecylammonium acetate [ODA]-modified inland clinoptilolite. In trials, a natural variety of mon...
Adsorption of Non-ionic Surface Active Agent on Fine Coal and Lignite
Reagent adsorption adsorption kinetics coal-lignite
2010/4/23
The adsorption of Triton X-100 in aqueous solution on the less than 53 \mm size fractions of Tunçbilek lignite and Zonguldak bituminous coal was studied. The adsorption isotherms were formed fo...
Adsorption of Some Heavy Metal Ions from Aqueous Solution by Activated Carbon and Comparison of Percent Adsorption Results of Activated Carbon with those of Some Other Adsorbents
Heavy metal adsorption activated carbon chitosan agar adsorption from aqueous solution adsorption kinetics adsorption isotherm
2010/6/27
In this study, removal of some heavy metals ions (Mn2+, Fe2+, Ni2+ and Cu2+) from aqueous solution by adsorption was investigated. For this purpose, high-grade MnSO4.H2O, FeSO4.7H2O, NiSO4.7H2O and Cu...
The Measurement of Surface Areas of Some Silicates by Solution Adsorption
Surface area determination solute adsorption adsorption from solution
2010/6/29
In this study, the adsorption from solution technique was used for the determination of surface areas of some silicate samples (bentonite, sepiolite, zeolitic tuff and kaolin). Methylene blue (MB), or...
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...
Adsorption of Copper and Cadmium lons by Activated Carbon From Rice Hulls
Adsorption heavy metal activated carbon rice hulls
2010/6/28
The removal of copper (II) and cadmium (II) ions from aqueous solutions, by adsorption on activated carbon prepared from rice hulls (ACRH), was investigated depending on pH, activated carbon dosage, c...
Cu2+ and Pb2+ adsorption isotherms were measured on some clay samples obtained from various regions of Turkey. Also specific surface areas of clays were determined from adsorption data of ortho-phenan...
