A complex additive has been synthesized from maleic acid, sodium hypophosphite and Zn 2+ dodecyl-polyglucoside. It was used to prepare α-FeOOH by alkaline method with different concentration of additive oxidation of ...A complex additive has been synthesized from maleic acid, sodium hypophosphite and Zn 2+ dodecyl-polyglucoside. It was used to prepare α-FeOOH by alkaline method with different concentration of additive oxidation of Fe 2+ has been discussed. The result showed that particle pattern of α-FeOOH was better when additive concentration was 1 0×10 -3 g/L. The γ-Fe 2O 3 powder with perfect comprehensive quality was prepared from α-FeOOH by dehydration, roast, reduction and oxidation.展开更多
Efficient reaction of bis-indolyl podand with different aldehydes using Fe(HSO4)3 as catalyst to afford the corresponding new indolyl crown ethers is described. The structures of three distinct isomers have been opt...Efficient reaction of bis-indolyl podand with different aldehydes using Fe(HSO4)3 as catalyst to afford the corresponding new indolyl crown ethers is described. The structures of three distinct isomers have been optimized using HyperChem geometry optimizations. Also percentage of each isomer was obtained with 1H NMR spectroscopy.展开更多
文摘A complex additive has been synthesized from maleic acid, sodium hypophosphite and Zn 2+ dodecyl-polyglucoside. It was used to prepare α-FeOOH by alkaline method with different concentration of additive oxidation of Fe 2+ has been discussed. The result showed that particle pattern of α-FeOOH was better when additive concentration was 1 0×10 -3 g/L. The γ-Fe 2O 3 powder with perfect comprehensive quality was prepared from α-FeOOH by dehydration, roast, reduction and oxidation.
文摘Efficient reaction of bis-indolyl podand with different aldehydes using Fe(HSO4)3 as catalyst to afford the corresponding new indolyl crown ethers is described. The structures of three distinct isomers have been optimized using HyperChem geometry optimizations. Also percentage of each isomer was obtained with 1H NMR spectroscopy.