omerelsheikh

omerelsheikh

مدرس - عضو هيئة تدريس

كلية العلوم

العنوان: Sohag

2

إعجاب
4 0 0 3 2 0 321 54
59

أضيف حديثا
  • المقررات الدراسية 4
  • ملحقات المقررات الدراسية 0
  • واجبات المقررات الدراسية 0
  • المنشورات و المؤلفات 3
  • ساعات مكتبية 2
  • الاعلانات 0
  • عدد الملفات المرفوعه 0
  • كل التنزيلات 0

المنشورات و المؤلفات التي تحتوي علي الكلمة المفتاحية: recovered catalyst

Magnetic NiFe2O4 nanoparticles: efficient, heterogeneous and reusable catalyst for synthesis of acetylferrocene chalcones and their anti‐tumour activity

2018-09-11 14:11:35 الكلمات المفتاحية anti-tumour activity, chalcone derivatives, acetylferrocene, recovered catalyst, efficient catalyst , magnetic NiFe2O4nanoparticles, TEM, SEM-EDX,
Magnetic NiFe2O4 nanoparticles: efficient, heterogeneous and reusable catalyst for synthesis of acetylferrocene chalcones and their anti‐tumour activity
A robust synthesis of magnetic NiFe2O4 nanoparticles via a hydrothermal technique was investigated. The prepared magnetic NiFe2O4 nanoparticles were characterized using powder X‐ray diffraction (XRD), scanning electron microscopy, transmission electron microscopy (TEM), high‐resolution TEM, energy‐dispersive X‐ray spectroscopy, thermogravimetric analysis, infrared spectroscopy and vibrating sample magnetometry. XRD and TEM analyses confirmed the formation of single‐phase ultrafine nickel ferrite nanoparticles with highly ... إقراء المزيد

CuFe2O4 nanoparticles: an efficient heterogeneous magnetically separable catalyst for synthesis of some novel propynyl-1H-imidazoles derivatives

2018-09-11 16:39:44 الكلمات المفتاحية superparamagnetic materials, TEM, non-chromatographic methods, 5-Tetrasubstituted imida, recovered catalyst, efficient catalyst , Magnetic CuFe2O4 nanoparticles,
CuFe2O4 nanoparticles: an efficient heterogeneous magnetically separable catalyst for synthesis of some novel propynyl-1H-imidazoles derivatives
The non-toxic magnetic CuFe2O4 nanoparticles have been synthesized, characterized, and used as an efficient catalyst for synthesis of new derivatives for 1,2,4,5-tetrasubstituted imidazoles in excellent yields. The synthesized compounds work-up easy and purification of products are performed without chromatographic methods. The catalyst can be recovered for the subsequent reactions and reused without any appreciable loss. إقراء المزيد

  • «
  • 1
  • »