فهرست مقالات Diethylenetriamine

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  1 - Silica-bonded n-propyldiethylenetriamine sulfamic acid as a recyclable solid acid catalyst for the synthesis of coumarin and biscoumarin derivatives
  Khodabakhsh Niknam Seyed Ahmad Sajadi Roghayeh Hosseini Mojtaba Baghernejad
  Silica-bonded n-propyldiethylenetriamine sulfamic acid (SBPDSA) was found as an efficient solid acid for the synthesis of coumarins. Coumarin derivatives were obtained via the Pechmann condensation reaction of phenols and β-keto-esters at 80 oC under solvent-free c چکیده کامل

  Silica-bonded n-propyldiethylenetriamine sulfamic acid (SBPDSA) was found as an efficient solid acid for the synthesis of coumarins. Coumarin derivatives were obtained via the Pechmann condensation reaction of phenols and β-keto-esters at 80 oC under solvent-free conditions. Also, biscoumarins were obtained via the condensation of aldehydes and 4-hydroxycoumarin in water at reflux conditions. The heterogeneous solid acid showed much the same efficiency when used in consecutive reaction runs. پرونده مقاله
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  2 - Synthesis and application of chelating resins based on polyacrylonitrilediethylenetriamine for metal ions removal
  Nasser Arsalani Elnaz Ghasemi Roghayeh Rakh Ali Akbar Entezami
  Chelating resins based on polyacrylonitrile and diethylenetriamine (PAN-DTA) wereprepared through the simple reaction of polyacrylonitrile with various volume percents ofdiethylenetriamine (DTA), (25, 50, 75 and 100). The prepared resins were applied to removeheavy meta چکیده کامل

  Chelating resins based on polyacrylonitrile and diethylenetriamine (PAN-DTA) wereprepared through the simple reaction of polyacrylonitrile with various volume percents ofdiethylenetriamine (DTA), (25, 50, 75 and 100). The prepared resins were applied to removeheavy metal ions such as Cu(II), Zn(II) and Cd(II) from aqueous solutions. The sorptionbehaviors of the resins for these metal ions were found to be greater at higher solution pH values.Highest sorption on PAN-DTA was determined as 5 mmol g-1 for Cu(II). The number of aminegroups present in the resin (amine capacity) is depended on the volume percent of DTA and themaximum capacity was obtained 6.25 mmol g-1. The resins and their metal complexes have beenstudied by FT-IR spectroscopy, scanning electronic microscopy (SEM) and thermogravimetryanalysis (TGA). All these analyses methods confirmed the presence of metal in the metal-resincomplexes. پرونده مقاله