A Review on Selective Production of Acetophenone from Oxidation of Ethylbenzene over Heterogeneous Catalysts in a Decade

Nandanwar, Sachin U.; Rathod, Simmy; Bansal, Videsha; Bokade, Vijay V.

doi:10.1007/s10562-020-03474-8

Cited by 38 publications

(26 citation statements)

References 67 publications

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“…The international market of AcPO was then forecasted to increase from 182 million US$ to 264.1 million US$ by 2025. [1] Herein, it is essential to develop highly efficient, stable and environmental benign catalysts and reaction systems to meet the requirement of global demand.…”

Section: Introductionmentioning

confidence: 99%

“…The oxidation of ethylbenzene (EB) as typical reaction is the significant chemical process to produce acetophenone (AcPO), which takes 4 % global market in 2018. The international market of AcPO was then forecasted to increase from 182 million US$ to 264.1 million US$ by 2025 [1] . Herein, it is essential to develop highly efficient, stable and environmental benign catalysts and reaction systems to meet the requirement of global demand.…”

Section: Introductionmentioning

confidence: 99%

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Confined Cobalt on Carbon Nanotubes in Solvent‐free Aerobic Oxidation of Ethylbenzene: Enhanced Interfacial Charge Transfer

Chen

Huang

et al. 2021

ChemCatChem

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Aerobic oxidation of hydrocarbons yielding corresponding oxygenated products is one of the most important chemical processes. In current work, carbon nanotubes supported encapsulated cobalt nanoparticles with carbon layers (Co@C/ CNTs) were synthesized and utilized as catalysts in the oxidation of ethylbenzene (EB) in the liquid phase, exhibiting high catalytic performance. The synergistic effect between Co@C and CNTs played the vital role on facilitating the decomposition of peroxides to enhance the overall activity. The inadequate covered Co@C on CNTs surface were considered as catalytic sites. Density functional theory revealed that the exist of Co nanoparticles could improve the interaction between the catalyst and intermediate free radicals, which were significant for EB oxidation. Last but not least, the electron transfer on carbon surface was enhanced by the incorporation of Co@C nanoparticles, which greatly improved the catalytic performance on EB oxidation. This study provides a new insight into the Co-based catalysts in the aerobic oxidation of hydrocarbons.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Confined Cobalt on Carbon Nanotubes in Solvent‐free Aerobic Oxidation of Ethylbenzene: Enhanced Interfacial Charge Transfer

Chen

Huang

et al. 2021

ChemCatChem

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“…Oxidation of CnOH mechanism is well demonstrated using different type of catalysts like oxides, and spinel with TBHP. [8,[32][33][34][35][36] Initially, TBHP decomposed into its free radicals over CuFe 2 O 4 catalyst. These reactive free radicals then react with CnOH on CuFe 2 O 4 surface to form CnHO.…”

Section: Resultsmentioning

confidence: 99%

Catalytic Activity of CuFe₂O₄ Spinel Oxide for Liquid‐Phase Oxidation of Cinnamyl Alcohol

et al. 2022

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CuFe 2 O 4 spinel oxide catalyst was synthesized by sol-gel and co-precipitation methods for liquid phase oxidation of Cinnamyl alcohol (CnOH) to Cinnamaldehydes (CnHO) using tert-Butyl hydroperoxide (TBHP) as oxidising agent. Spinel oxide catalyst was characterized by different techniques such as X-ray diffraction (XRD), N 2 adsorption-desorption, BET surface area, and X-ray photoelectron spectroscopy (XPS) to understand the structural, physical properties and oxidation state of the catalyst. The result shows that catalyst prepared by sol-gel method was found higher surface area and smaller crystalline size than co-precipitation method. XPS data confirm the formation of Cu 2 + in the spinel which helps to improve the catalytic activity of oxidation. This reaction follows radical mechanism, and exhibited 76.7 % of CnOH conversion and 68.4 % of CnHO, and 24.8 % benzaldehyde (benzald) selectivity using TBHP at 60 °C. Kinetic data reveal that 41.2 kJ/mol of activation energy for the reaction. The higher activity of spinel oxide catalyst could be due synergetic effect of spinel (88 %) and oxides (12 %) formed in the catalyst, which helps to provide the oxygen during reaction. The contribution of Cu 2 + is higher in sol-gel than co-precipitation, which may provide the better reactivity of catalyst. This work helps to select the effective and cost-effective catalyst for the oxidation of CnOH.

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“…[2] Taking acetophenone as an example, it plays a significant role in the production of spices, drugs, resins, tear gas, and other chemical industries. [3,4] Traditionally, stoichiometric agents, such as KMnO 4 , HNO 3 , etc., are used as oxidants, but their usage is limited to high cost and toxic wastes, as well as violating the conception of green chemistry. [5] To tackle this pain point, people changed their horizon to an environmentally-friendly and cheap oxidant, such as H 2 O 2 .…”

Section: Introductionmentioning

confidence: 99%

Preparation of Bimetallic CuZn@mSiO₂ Yolk‐Shell Catalyst for the Selective Oxidation of Cumene to Acetophenone

Song

Jia

et al. 2022

ChemNanoMat

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Bimetallic catalysts have exhibited huge catalytic potential in the oxy-functionalization of alkanes. Here, we provide a valid strategy for encapsulating copper and zinc metal oxide nanoparticles by mesoporous SiO 2 . The prepared CuZn@mSiO 2 catalyst are yolk-shell nanospheres with a diameter of 600 nm and a large specific surface area around 1000 m 2 g À 1 . Bimetallic synergy between Cu and Zn was further analyzed by XRD, XPS and H 2 -TPR. The selective oxidation of cumene to acetophenone was used as a probe reaction to evaluate the activity of bimetallic yolk-shell catalysts, and the results showed excellent catalytic performance that promoted cumene to acetophenone transformation under mild conditions (80 °C, 5 h, H 2 O 2 as oxidant). Also, the recycling tests verified the robust stability and reusability for the catalyst. Finally, a reasonable reaction mechanism was proposed to better understand the oxidation pathway of cumene.

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A Review on Selective Production of Acetophenone from Oxidation of Ethylbenzene over Heterogeneous Catalysts in a Decade

Cited by 38 publications

References 67 publications

Confined Cobalt on Carbon Nanotubes in Solvent‐free Aerobic Oxidation of Ethylbenzene: Enhanced Interfacial Charge Transfer

Confined Cobalt on Carbon Nanotubes in Solvent‐free Aerobic Oxidation of Ethylbenzene: Enhanced Interfacial Charge Transfer

Catalytic Activity of CuFe₂O₄ Spinel Oxide for Liquid‐Phase Oxidation of Cinnamyl Alcohol

Preparation of Bimetallic CuZn@mSiO₂ Yolk‐Shell Catalyst for the Selective Oxidation of Cumene to Acetophenone

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A Review on Selective Production of Acetophenone from Oxidation of Ethylbenzene over Heterogeneous Catalysts in a Decade

Cited by 38 publications

References 67 publications

Confined Cobalt on Carbon Nanotubes in Solvent‐free Aerobic Oxidation of Ethylbenzene: Enhanced Interfacial Charge Transfer

Confined Cobalt on Carbon Nanotubes in Solvent‐free Aerobic Oxidation of Ethylbenzene: Enhanced Interfacial Charge Transfer

Catalytic Activity of CuFe2O4 Spinel Oxide for Liquid‐Phase Oxidation of Cinnamyl Alcohol

Preparation of Bimetallic CuZn@mSiO2 Yolk‐Shell Catalyst for the Selective Oxidation of Cumene to Acetophenone

Contact Info

Product

Resources

About

Catalytic Activity of CuFe₂O₄ Spinel Oxide for Liquid‐Phase Oxidation of Cinnamyl Alcohol

Preparation of Bimetallic CuZn@mSiO₂ Yolk‐Shell Catalyst for the Selective Oxidation of Cumene to Acetophenone