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Influence of Metal Ions on Hydrogenation of o-Chloronitrobenzene over platinum colloidal cluster
Hydrogenation of o-chloronitrobenzene has been studied in methanol at 303 K and atmospheric pressure over polyvinylpyrrolidone-stabilizedp latinum colloidal clusters. The catalytic properties of platinum clusters for the hydrogenation of o-chloronitrobenzene to o-chloroaniline were remarkably affected by the metallic cations added. Among these cations, the most favorable influence on activity an...
http://www.polymer.cn//ss/yangxinlin/publicationsshow_6599.html |
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Modification of Ramie Fabric with Metal Ions Doped Intumescent Flame Retardant Coating
Transition metal ions doped flame retardant coatings were constructed on the surface of ramie fabrics by layer by layer (LbL) assembly technique to investigate the possible cooperative action that could improve the flame retardant efficiency. It is found that these functional coatings consisting of poly(vinylphosphonic acid) (anionic layer) and branched polyethylenimine/cupric or zinc ions (cation...
http://www.polymer.cn//ss/zpfang/publicationsshow_4867.html |
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Ring-opening polymerization of γ-glycidoxypropyltrimethoxysilane catalyzed by multi-metal cyanide catalyst
Ring-opening polymerizations of γ-glycidoxypropyltrimethoxysilane (GPTMS) were carried out by using multi-metal cyanide (MMC) catalyst and the synthesized
homopolymer was a comb-shaped polymer with regular structure. The structure of the polymer obtained (P-GPTMS) was characterized by FTIR, 1H-NMR, and Si-NMR spectroscopy, and the molecular weight and its distribution were analyzed by size-...
http://www.polymer.cn//ss/fanxd/publicationsshow_4308.html |
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Electrospun membrane of cellulose acetate for heavy metal ion adsorption in water treatment
Cellulose acetate (CA) nonwoven membrane for heavy metal ion adsorption was prepared by electrospinning and surface modification with poly(methacrylic acid) (PMAA) The morphology and graft modification of the membrane were characterized by SEM and ATR-FTIR The adsorption of heavy metal ions Cu2+ Hg2+ and Cd2+ on this membrane was investigated The adsorption capacity increased with the increas...
http://www.polymer.cn//ss/rgliu/publicationsshow_3121.html |
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57. Porous macrobeads composed of metal oxide nanocrystallites and with percolated porosity
In this work, we report a method of preparing porous metal oxide macrobeads using a cation-exchange resin with sulfonic acid groups as templates and aqueous solutions of metal salts as precursors. The metal–resin complexes formed on the pore surface of resins were firstly transformed into metal hydroxide precipitates in the pores after a treatment of ammonia, and then the metal oxide ma...
http://www.polymer.cn//ss/wangwei/publicationsshow_3088.html |
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A Facile Chemical Route to Semiconductor Metal Sulfide Nanocrystal Superlattices
We report a facile chemical route for the synthesis of monodisperse nanocrystals of various metal sulfides (PbS, Cu2S, and Ag2S) and their assemblies into nanocrystal superlattices (NCSs); the sulfides NCSs were precipitated by adding ethanol to nanocrystal colloids, which were obtained directly by a reaction between metal thiolate and thioacetamide in a pure dodecanethiol solvent.
http://www.polymer.cn//ss/liuzhaoping/publicationsshow_2855.html |
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Synthesis and Electrochemical Properties of Layered Lithium Transition Metal Oxides
Layered lithium transition metal oxide cathode materials which had spherical morphology with primary nanoparticles assembled in secondary micropartciles were generally synthesized through a simple carbonate co-precipitation method.
http://www.polymer.cn//ss/liuzhaoping/publicationsshow_2837.html |
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Forward tunneling effect and metal-insulator transition in the BaTiO3 film/Si n-n heterojunction
A n-n heterojunction composed of BaTiO3 film and silicon substrate was fabricated, and it shows good rectifying properties in the temperature range of 80–300 K. The forward tunneling effect in the junction at low temperatures (200 K) is proved by the phenomenon that the current increases abruptly when the forward electrical voltage exceeds a high threshold (12 V). The temperature
dependence...
http://www.polymer.cn//ss/xueqingzhong/publicationsshow_2661.html |
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Polymeric Salphen-Phthalocyanine Dinuclear Metal Complexes for Activation of Molecular Oxygen
The polymeric Salphen Schiff base-phthalocyanine Co-Cu dinuclear metal complex (PSalphenCo-PcCu) was designed and synthesized through interfacial
condensation polymerization. The new sheet polymeric dinuclear metal complex has been characterized by IR spectra, UV-visible spectra, scanning electron microscopy with energy dispersive X-ray analysis and thermogravimetry
analysis. Its catalytic activ...
http://www.polymer.cn//ss/wangrongmin/publicationsshow_2615.html |
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Preparation and catalytic oxidation properties of inorganic polymer encapsulated metal complexes
An inorganic polymer supporter, such as molecular sieve MCM-41, was used as a support for
encapsulating metal complex catalysts. The metal complex was prepared with L-glutamic acid
and Co(OAc)2. 4H2O. Their catalytic activity in oxidation of cyclohexene with H2O2 was studied.
The major products of this reaction were hexanedial, 2-cyclohexen-1-one, 2-cyclohexen-1-hydropenoxide
and epoxide, whic...
http://www.polymer.cn//ss/wangrongmin/publicationsshow_2602.html |
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