Covalent Triazine Frameworks with Palladium Nanoclusters as Highly Efficient Heterogeneous Catalysts for Styrene Oxidation

2022 ◽  
Author(s):  
Ze Li ◽  
Mengyu Di ◽  
Yantao Zhang ◽  
Boying Zhang ◽  
Zhenni Zhang ◽  
...  
Keyword(s):  
Heterogeneous Catalysts ◽  
Styrene Oxidation ◽  
Highly Efficient

scholarly journals Selective Styrene Oxidation to Benzaldehyde over Recently Developed Heterogeneous Catalysts

Molecules ◽  
2021 ◽  
Vol 26 (6) ◽  
pp. 1680
Author(s):  
Marta A. Andrade ◽  
Luísa M. D. R. S. Martins
Keyword(s):  
Heterogeneous Catalysts ◽  
Carbon Materials ◽  
Oxygen Species ◽  
Styrene Oxidation ◽  
Reaction Conditions ◽  
Reactive Metal ◽  
Catalytic Systems ◽  
Tert Butyl Hydroperoxide ◽  
Metal Organic ◽  
Important Intermediate

The selective oxidation of styrene under heterogeneous catalyzed conditions delivers environmentally friendly paths for the production of benzaldehyde, an important intermediate for the synthesis of several products. The present review explores heterogeneous catalysts for styrene oxidation using a variety of metal catalysts over the last decade. The use of several classes of supports is discussed, including metal–organic frameworks, zeolites, carbon materials and silicas, among others. The studied catalytic systems propose as most used oxidants tert-butyl hydroperoxide, and hydrogen peroxide and mild reaction conditions. The reaction mechanism proceeds through the generation of an intermediate reactive metal–oxygen species by catalyst-oxidant interactions. Overall, most of the studies highlight the synergetic effects among the metal and support for the activity and selectivity enhancement.

scholarly journals Sustainable M-MOF-74 (M = Cu, Co, Zn) prepared in methanol as heterogeneous catalysts in the synthesis of benzaldehyde from styrene oxidation

2021 ◽  
pp. 122151
Author(s):  
J. Gabriel Flores ◽  
Manuel Díaz-García ◽  
Ilich A. Ibarra ◽  
Julia Aguilar-Pliego ◽  
Manuel Sánchez-Sánchez
Keyword(s):  
Heterogeneous Catalysts ◽  
Styrene Oxidation

Preformed Au colloidal nanoparticles immobilised on NiO as highly efficient heterogeneous catalysts for reduction of 4-nitrophenol to 4-aminophenol

2019 ◽  
Vol 7 (5) ◽  
pp. 103381 ◽  
Author(s):  
Davide Motta ◽  
Felipe Sanchez ◽  
Khaled Alshammari ◽  
Lidia E. Chinchilla ◽  
Gianluigi A. Botton ◽  
...  
Keyword(s):  
Heterogeneous Catalysts ◽  
Colloidal Nanoparticles ◽  
Highly Efficient

scholarly journals Heterogeneous catalysis with encapsulated haem and other synthetic porphyrins: Harnessing the power of porphyrins for oxidation reactions

2018 ◽  
Vol 16 (1) ◽  
pp. 763-789 ◽  
Author(s):  
Nicola A. Dare ◽  
Timothy J. Egan
Keyword(s):  
Catalytic Activity ◽  
Heterogeneous Catalysis ◽  
Heterogeneous Catalysts ◽  
Organic Substrates ◽  
Oxidation Reactions ◽  
Highly Efficient ◽  
Protein Environment

AbstractEncapsulated metalloporphyrins have been widely studied for their use as efficient heterogeneous catalysts, inspired by the known catalytic activity of porphyrins in haemoproteins. The oxidation of organic substrates by haemoproteins is one of the well-known roles of these proteins, in which the haem (ferriprotoporphyrin IX = FePPIX) cofactor is the centre of reactivity. While these porphyrins are highly efficient catalysts in the protein environment, once removed, they quickly lose their reactivity. It is for this reason that they have garnered much interest in the field of heterogeneous catalysis of oxidation reactions. This review details current research in the field, focusing on the application of encapsulated haem, and other synthetic metalloporphyrins, applied to oxidation reactions.

scholarly journals Highly Efficient and Selective Transformations of Glycerol Using Reusable Heterogeneous Catalysts

2014 ◽  
Vol 2 (4) ◽  
pp. 574-578 ◽  
Author(s):  
Tomoo Mizugaki ◽  
Racha Arundhathi ◽  
Takato Mitsudome ◽  
Koichiro Jitsukawa ◽  
Kiyotomi Kaneda
Keyword(s):  
Heterogeneous Catalysts ◽  
Highly Efficient

scholarly journals Mg-Al-Cr2O7 Hydrotalcite-Like Catalysts Synthesized at Different pH Values for Styrene Oxidation

2020 ◽  
pp. 13-21
Author(s):  
Le Huy Tran ◽  
Thi Ngoc Mai Tran ◽  
Tuan Vu Anh ◽  
Pham Quoc Khanh ◽  
Thi Minh Thu Nguyen ◽  
...  
Keyword(s):  
Heterogeneous Catalysts ◽  
Chemical Properties ◽  
X Ray Diffraction ◽  
Styrene Oxidation ◽  
Preparation Conditions ◽  
Physico Chemical ◽  
Ph Conditions ◽  
Dichromate Anions ◽  
Co Precipitation ◽  
Styrene Conversion

Dichromate anions were intercalated between two consecutive hydroxide layers of [Mg0.6Al0.4(OH)2]0.40+ via co-precipitation at different pH conditions. The physico-chemical properties of the obtained solids were examined by physical methods such as X-ray diffraction (XRD), Infrared (IR), Scanning Electron Microscopy (SEM), Brunauer-Emmett-Teller (BET) and Energy-Dispersive Spectroscopy (EDS). The experimental results indicated that the amount of dichromate anions in the catalysts varies with the pH media. Also, the morphology, structure and chemical composition of the materials depends strongly on the preparation conditions. The Mg-Al-Cr2O7 hydrotalcite-like compounds are used as heterogeneous catalysts for the styrene oxidation with H2O2 at mild conditions. The styrene conversion is about 20-50% while styrene selectivity remains rather high.

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