FeNi3@SiO2 nanoparticles: an efficient and selective heterogeneous catalyst for the epoxidation of olefins and the oxidation of sulfides in the presence of meta-chloroperoxybenzoic acid at room temperature

2018 ◽  
Vol 126 (1) ◽  
pp. 383-398 ◽  
Author(s):  
Samaneh Ghiami ◽  
Mohammad Ali Nasseri ◽  
Ali Allahresani ◽  
Milad Kazemnejadi
Keyword(s):  
Heterogeneous Catalyst ◽  
Room Temperature ◽  
Sio2 Nanoparticles ◽  
Oxidation Of Sulfides ◽  
Epoxidation Of Olefins

A magnetic supported iron complex for selective oxidation of sulfides to sulfoxides using 30% hydrogen peroxide at room temperature

RSC Advances ◽  
2014 ◽  
Vol 4 (83) ◽  
pp. 44274-44281 ◽  
Author(s):  
Ahmad Bayat ◽  
Mehdi Shakourian-Fard ◽  
Nona Ehyaei ◽  
Mohammad Mahmoodi Hashemi
Keyword(s):  
Hydrogen Peroxide ◽  
Heterogeneous Catalyst ◽  
Selective Oxidation ◽  
Room Temperature ◽  
Iron Complex ◽  
Oxidation Of Sulfides ◽  
Iron Iron ◽  
Recyclable Heterogeneous Catalyst ◽  
Supported Iron

Selective oxidation of sulfides to corresponding sulfoxides using H2O2 as a green oxidant at room temperature have been investigated by a magnetic supported iron (iron(ii) acetylacetonate) as an efficient and recyclable heterogeneous catalyst with excellent sulfide conversion and good sulfoxide selectivity.

Knoevenagel Condensations Catalyzed by New Oil Shale Recyclable Catalyst at Room Temperature and Assisted by Ultrasounds Irradiations

2021 ◽  
Vol 37 (6) ◽  
pp. 1295-1301
Author(s):  
Elmustapha Ennesyry ◽  
Fathallaah Bazi ◽  
Bahija Mounir ◽  
M’hammed Elkouali Elkouali ◽  
Hassan Hannache ◽  
...  
Keyword(s):  
Heterogeneous Catalyst ◽  
Catalytic System ◽  
Oil Shale ◽  
Room Temperature ◽  
Knoevenagel Condensation ◽  
Recyclable Catalyst ◽  
Short Time

Functionalized alkenes were successfully synthesized via a clean procedure in a short time by using a new recycled heterogeneous catalyst prepared from Moroccan oil shale, this catalyst is characterized by different technics such XRD, BET-BJH, MEB-EDS, and TGA, before it’s has been used in the Knoevenagel condensation between different aldehydes and active methylenes. The results showed that coupling the catalyst with ultrasound irradiations could improve the catalytic system in this transformation by achieving the products in a very short time, the results showed clearly that this catalyst could be considered as excellent recyclable support in Knoevenagel condensation.

scholarly journals Room temperature silylation of alcohols catalyzed by metal organic frameworks

2017 ◽  
Vol 7 (12) ◽  
pp. 2445-2449 ◽  
Author(s):  
Amarajothi Dhakshinamoorthy ◽  
Andrea Santiago-Portillo ◽  
Patricia Concepción ◽  
José R. Herance ◽  
Sergio Navalón ◽  
...  
Keyword(s):  
Heterogeneous Catalyst ◽  
Room Temperature ◽  
Metal Organic Frameworks ◽  
Aliphatic Alcohols ◽  
Benzenedicarboxylic Acid ◽  
Metal Organic

Commercial Al(OH)(BDC) (BDC: 1,4-benzenedicarboxylic acid) is a suitable heterogeneous catalyst for the silylation of benzylic and aliphatic alcohols by hexamethyldisilazane in toluene at room temperature.

scholarly journals Sandwich type polyoxometalates encapsulated into the mesoporous material: synthesis, characterization and catalytic application in the selective oxidation of sulfides

RSC Advances ◽  
2018 ◽  
Vol 8 (49) ◽  
pp. 28249-28260 ◽  
Author(s):  
Elham Naseri ◽  
Roushan Khoshnavazi
Keyword(s):  
Selective Oxidation ◽  
Mesoporous Material ◽  
Room Temperature ◽  
Material Synthesis ◽  
Catalytic Activities ◽  
Oxidation Of Sulfides ◽  
Catalytic Application ◽  
Sandwich Type ◽  
First Time ◽  
Sandwich Type Polyoxometalates

The A-type sandwich POMs of [(HOSnIVOH)3(PW9O34)2]12– (P2W18Sn3) and [(OCeIVO)3(PW9O34)2]12– (P2W18Ce3) were immobilized for the first time into the porous MIL-101 MOF. Their catalytic activities were examined in the oxidation of sulfides to sulfones at room temperature.

Efficient synthesis of pyrido[2,3-d]pyrimidine-7-carboxylic acids catalyzed by a TiO2/SiO2 nanocomposite in aqueous media at room temperature

2018 ◽  
Vol 73 (9) ◽  
pp. 641-645 ◽  
Author(s):  
Sepehr Sadegh-Samiei ◽  
Shahrzad Abdolmohammadi
Keyword(s):  
Heterogeneous Catalyst ◽  
Carboxylic Acids ◽  
Room Temperature ◽  
Aqueous Media ◽  
Reaction Times ◽  
Molar Ratio ◽  
Efficient Synthesis ◽  
Reaction Conditions ◽  
Moderate Reaction ◽  
Recyclable Heterogeneous Catalyst

AbstractA novel and efficient synthesis of eight 5-aryl-1,3-dimethyl-2,4-dioxo-1,2,3,4,5,8-hexahydropyrido[2,3-d]pyrimidine-7-carboxylic acids using a TiO2/SiO2 nanocomposite with a molar ratio of 1:1 as a recyclable heterogeneous catalyst is described. The desired products, five of which are new, are formed in short reaction times (2–3 h) with high to excellent yields (94%–98%) under very moderate reaction conditions (room temperature, aqueous media).

scholarly journals A New Heterogeneous Catalyst Obtained via Supramolecular Decoration of Graphene with a Pd2+ Azamacrocyclic Complex

Molecules ◽  
2019 ◽  
Vol 24 (15) ◽  
pp. 2714 ◽  
Author(s):  
Matteo Savastano ◽  
Paloma Arranz-Mascarós ◽  
Maria Paz Clares ◽  
Rafael Cuesta ◽  
Maria Luz Godino-Salido ◽  
...  
Keyword(s):  
Heterogeneous Catalyst ◽  
Self Assembly ◽  
Room Temperature ◽  
Coupling Reaction ◽  
Cross Coupling ◽  
Assembly Process ◽  
Efficient Catalyst ◽  
Mild Conditions ◽  
Cross Coupling Reaction ◽  
Green Procedure

A new G-(H2L)-Pd heterogeneous catalyst has been prepared via a self-assembly process consisting in the spontaneous adsorption, in water at room temperature, of a macrocyclic H2L ligand on graphene (G) (G + H2L = G-(H2L)), followed by decoration of the macrocycle with Pd2+ ions (G-(H2L) + Pd2+ = G-(H2L)-Pd) under the same mild conditions. This supramolecular approach is a sustainable (green) procedure that preserves the special characteristics of graphene and furnishes an efficient catalyst for the Cu-free Sonogashira cross coupling reaction between iodobenzene and phenylacetylene. Indeed, G-(H2L)-Pd shows an excellent conversion (90%) of reactants into diphenylacetylene under mild conditions (50 °C, water, aerobic atmosphere, 14 h). The catalyst proved to be reusable for at least four cycles, although decreasing yields down to 50% were observed.

Sign in / Sign up

Export Citation Format

Share Document