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- Electrochemical activation of carbon dioxide in ionic liquid: synthesis of cyclic carbonates at mild reaction conditions
- 更新时间:2014-04-05;信息类型:SCI论文
- Electrocatalytic cycloaddition of carbon dioxide to epoxides in room temperature ionic liquids as reaction media without any additional supporting electrolyte and catalyst could be conducted with high to excellent performances under mild conditions.
- 链接地址:http://www.ionike.com/download/article/2014-04-05/14.html
- Ionic liquid as a green catalytic reaction medium for esterifications
- 更新时间:2014-04-05;信息类型:SCI论文
- Esterifications of alcohols with carboxylic acids in the room temperature ionic liquid 1-butylpyridinium chloride–aluminium(III) chloride as green reaction medium in catalytic quantities have been investigated. Excellent conversion and selectivities were achieved, and the most of resultant esters could be easily recovered due to immiscibility with the ionic liquid.
- 链接地址:http://www.ionike.com/download/article/2014-04-05/13.html
- Catalytic Beckmann rearrangement of ketoximes in ionic liquids
- 更新时间:2014-04-05;信息类型:SCI论文
- Under mild conditions and without any additional organic solvents, Beckmann rearrangements of several ketoximes were performed in the catalytic media consisting of room temperature ionic liquid based on 1,3-dialkylimidazolium or alkylpyridinium salts and phosphorated compounds. Excellent conversion and selectivity was achieved for cyclohexanone oxime as the substrate, while Beckmann fragmentation of cyclopentanone oxime was observed.
- 链接地址:http://www.ionike.com/download/article/2014-04-05/12.html
- A novel ZrO2–SO4 2− supported palladium catalyst for syntheses of disubstituted ureas from amines by oxidative carbonylation
- 更新时间:2014-04-05;信息类型:SCI论文
- The syntheses of disubstituted ureas by carbonylation of a series of amines in the presence of a sulfate modified zirconia supported palladium catalyst was investigated at an initial total pressure of 4.0 MPa and 135°C. High conversions and yields were achieved for the synthesis of symmetric dialkylureas. This supported catalyst could also be easily separated and recovered after reaction.
- 链接地址:http://www.ionike.com/download/article/2014-04-05/11.html
- Cycloaddition of carbon dioxide to propylene oxide catalyzed by ionic liquids
- 更新时间:2014-04-05;信息类型:SCI论文
- In room temperature ionic liquids based on 1-n-butyl-3-methylimidazolium and n-butylpyridinium salts, cycloaddition of carbon dioxide to propylene oxide without any additional organic solvents has been investigated. It was found that 1-n-butyl-3-methylimidazolium tetraÑuoroborate was the most active catalyst with almost 100% selectivity, and a suitable CO oxide molar ratio was needed for high conversion. The ionic liquid used 2Èpropylene as catalyst for the reaction was recyclable.
- 链接地址:http://www.ionike.com/download/article/2014-04-05/10.html
- Au–Pt/Co3O4 catalyst for methane combustion
- 更新时间:2014-04-05;信息类型:SCI论文
- The catalytic activity of Au/Co3O4 (Au loading was 2–5 wt.%) towards methane combustion could be enhanced when small amount of Pt, e.g. 0.2 wt.% was added, and the temperature for 100% conversion of methane could be decreased by 50◦C. Palladium, which was the most active single metal catalyst for methane combustion, on the other hand, exhibited lower catalytic activity than Au–Pt/Co3O4 when combined with Au over the Co3O4 support.
- 链接地址:http://www.ionike.com/download/article/2014-04-05/9.html
- Alkylations of benzene in room temperature ionic liquids modified with HCl
- 更新时间:2014-04-05;信息类型:SCI论文
- Alkylations of benzene with dodecene and/or chloromethanes in the chloroaluminate room temperature ionic liquid modified with HCl as catalysts have been investigated. Different product distributions and enhanced activity, were respectively observed for these two alkylation reactions. This may be attributed to the superacidity of the ionic liquid induced by the presence of HCl.
- 链接地址:http://www.ionike.com/download/article/2014-04-05/8.html
- Ionic liquids catalyzed Biginelli reaction under solvent-free conditions
- 更新时间:2014-04-05;信息类型:SCI论文
- 3,4-Dihydropyrimidin-2(1H)-ones were synthesised in high yields by one-pot three-component Biginelli condensation in the presence of room temperature ionic liquids such as 1-n-butyl-3-methylimidazolium tetrafluoroborate (BMImBF4) or hexafluorophosphorate (BMImPF6) as catalysts under solvent-free and neutral conditions.
- 链接地址:http://www.ionike.com/download/article/2014-04-05/7.html
- A Novel PdCl2/ZrO2–SO2- 4 Catalyst for Synthesis of Carbamates by Oxidative Carbonylation of Amines
- 更新时间:2014-04-05;信息类型:SCI论文
- At 170 degreesC and ca. 4.0 MPa, oxidative carbonylation of aromatic amines to synthesize corresponding carbamates over a novel PdCl2/ZrO2-SO42- catalyst could proceed with high conversion and selectivity.
- 链接地址:http://www.ionike.com/download/article/2014-04-05/6.html
- Synthesis of dialkylureas by electrocatalytical carbonylation of aliphatic amines under mild conditions
- 更新时间:2014-04-05;信息类型:SCI论文
- A novel synthesis of several dialkylureas by electrocatalytical carbonylation of aliphatic amines was investigated at 30 degreesC and atmospheric pressure in the presence of Pd(II) and Cu(II) cocatalyst., This catalyst system was very effective for the carbonylation of primary mono-amines. Furthermore, the phenomenon of the non-Faradic electrochemical modification of catalytic activity was observed in this homogeneous reaction system and the current efficiency for dialkylurea formation reached 401%.
- 链接地址:http://www.ionike.com/download/article/2014-04-05/5.html