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搜索结果: 1-15 共查到理学 Alumina相关记录27条 . 查询时间(0.046 秒)
A simple method for simultaneous pre-concentration of Cu, Ni, and Co metal ions prior to their determination by flame atomic absorption spectrometry is reported. The method is based on the extraction ...
A simple method for simultaneous pre-concentration of Cu, Ni, and Co metal ions prior to their determination by flame atomic absorption spectrometry is reported. The method is based on the extraction ...
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...
A new solid phase, nanoparticles of alumina functionalized with pyridine groups, was synthesized and used for extraction and preconcentartion of palladium(II) ions from some water samples. The effects...
An efficient synthetic method for 1,4-dihydropyridines has been developed using 3 or 4 component condensation reactions of aldehydes, 1,3-dicarbonyl compounds, and ammonium acetate in the presence of ...
The present study investigated the transesterification process used in the production of canola oil methyl ester from canola oil and methanol over synthesized KF/Al2O3 catalysts. Different amounts of ...
The transesterification of canola oil with methanol was studied in a heterogeneous system, using g-Al2O3 supported alkaline catalysts. All the catalysts were prepared by incipient-wetness impregnation...
Synthesis of polymorphous of nanoparticulate alumina has been the subject of many works. The stabilization of these nanoparticles in aqueous suspensions is necessary in many technologic application an...
The room temperature kinetics of gas-phase ozone loss via heterogeneous interactions with thin alumina films has been studied in real-time using 254nm absorption spectroscopy to monitor ozone concentr...
CO oxidation reaction was studied over monometallic and bimetallic palladium--platinum catalysts at 25:75, 50:50, and 75:25 Pd:Pt atomic fractions co-impregnated over a g -Al2O3 support. The size of t...
摘要 1,2-Bis(salicylidenamino)ethane loaded onto sodium dodecyl sulfate-coated alumina was used as a new chelating sorbent for the preconcentration of traces of Pb(II) and Cu(II) prior to atomic absorpt...
以芳醛、氰乙酸酯和4-羟基喹啉-2-酮为原料, 乙醇为溶剂, 在KF-Al2O3催化下80 ℃, 一步合成了2-氨基-4-芳基-5,6-二氢化-4H-吡喃[3,2-c]喹啉-5-酮-3-羧酸酯衍生物, 和其它方法相比, 具有反应条件温和, 容易操作和产率高等优点, 产物4a的结构通过X单晶衍射分析确证.
期刊信息 篇名 Heterogeneous oxidation of carbonyl sulfide on atmospheric Particles and Alumina 语种 英文 撰写或编译 撰写 作者 Hong He*,Junfeng Liu,Yujing Mu,Yunbo Yu 第一作者单位 RCEES,Chinese Academy of Sciences 刊物名称 Environ...
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...
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...

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