Preparation and characterization of molybdenum hexacarbonyl encapsulated in polystyrene and its application as an efficient and reusable catalyst for epoxidation of alkenes with tert-BuOOH

2011 ◽  
Vol 14 (6) ◽  
pp. 604-610 ◽  
Author(s):  
Shahram Tangestaninejad ◽  
Majid Moghadam ◽  
Valiollah Mirkhani ◽  
Iraj Mohammadpoor-Baltork ◽  
Maryam Torki
Keyword(s):  
Reusable Catalyst ◽  
Molybdenum Hexacarbonyl ◽  
Epoxidation Of Alkenes

scholarly journals Synthesis and Characterization of Functionalize HY Zeolite With Sulfunic Acid, A Micro-meso Structure as an Efficient Reusable Catalyst in Organic Transformations

2021 ◽  
Author(s):  
Mojgan Zendehdel ◽  
Fatemeh Tavakoli
Keyword(s):  
Reaction Times ◽  
Solvent Free ◽  
Reusable Catalyst ◽  
Organic Transformations ◽  
Hy Zeolite ◽  
New Class ◽  
Solvent Free Condition ◽  
Result Show ◽  
High Yields

Abstract A new class of catalyst has been prepared with sulfunic acid functionalized HY zeolite (HY-N-SO3H) and characterized by FESEM, TEM, FTIR, TGA, XRD and BET. The result show that the catalyst has the micro-meso structure without ordering in the mesophase. Then, two sets of organic reaction were examined to consider of catalytic activity. The micro-meso structure HY-N-SO3H was used as an acidic catalyst to synthesis of coumarins via Pechmann reaction and facile transformation of amines to formamides under solvent free condition. This catalyst was compared with NaY-N-SO3H and MCM-N-SO3H and pure porous material to consider of the effect of acidity and kind and size of porous in the catalyst. The significant advantages of HY-N-SO3H respect to other catalyst are short reaction times, high yields, pure products, mild conditions and easy workup. In addition, we report an original and environmentally friendly solvent-free procedures which reusability of catalyst makes this method nearly green and environmental friendly.

Design, preparation and characterization of aerogel NiO–CuO–CoO/SiO2 nanocomposite as a reusable catalyst for C–N cross-coupling reaction

2020 ◽  
Vol 44 (13) ◽  
pp. 5056-5063
Author(s):  
Amir Hossein Ghasemi ◽  
Hossein Naeimi
Keyword(s):  
Sol Gel ◽  
Coupling Reaction ◽  
Cross Coupling ◽  
Supercritical Drying ◽  
Reusable Catalyst ◽  
Drying Method ◽  
Cross Coupling Reaction ◽  
Powerful Process

The aerogel nanocomposite produces using the sol–gel and supercritical drying method processes. The CO2 supercritical drying (SCD) was taken as the most powerful process, ensuring the best properties of the product.

Synthesis and Characterization of α-Diimine Complexes of Group 13 Metals and Their Catalytic Activity toward the Epoxidation of Alkenes

2015 ◽  
Vol 54 (15) ◽  
pp. 7139-7141 ◽  
Author(s):  
Connor A. Koellner ◽  
Nicholas A. Piro ◽  
W. Scott Kassel ◽  
Christian R. Goldsmith ◽  
Christopher R. Graves
Keyword(s):  
Catalytic Activity ◽  
Synthesis And Characterization ◽  
Group 13 ◽  
Diimine Complexes ◽  
Epoxidation Of Alkenes

Synthesis and characterization of Bi(iii) immobilized on triazine dendrimer-stabilized magnetic nanoparticles: a reusable catalyst for the synthesis of aminonaphthoquinones and bis-aminonaphthoquinones

2016 ◽  
Vol 40 (7) ◽  
pp. 6171-6184 ◽  
Author(s):  
Beheshteh Asadi ◽  
Iraj Mohammadpoor-Baltork ◽  
Shahram Tangestaninejad ◽  
Majid Moghadam ◽  
Valiollah Mirkhani ◽  
...  
Keyword(s):  
Magnetic Nanoparticles ◽  
Synthesis And Characterization ◽  
Reusable Catalyst ◽  
Novel Method

A novel method for synthesis of aminonaphthoquinone derivatives using Fe3O4@TDSN–Bi(iii) is reported.

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