New catalysts with dual-functionality for cyclohexane selective oxidation

Alshehri, Amal A.; Alhanash, Abdullah M.; Eissa, Murad; Hamdy, Mohamed S.

doi:10.1016/j.apcata.2018.01.025

Cited by 26 publications

(10 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In order to achieve high selectivity of KA-oil, the cyclohexane conversion is usually kept at a lower level to avoid the over oxidation of KAoil products (4-6% of conversion and 70-85% of selectivity), which decreases the process efficiency and increases the energy consumption. 7 In addition, the homogeneous catalysts used in this process can cause serious problems of environmental pollution and product separation. In view of the great demand for KA-oil products, low efficiency, large energy consumption and high environmental damage of the present process, an efficient and green process for selective oxidation of cyclohexane under mild conditions is still urgently required and important.…”

Section: Introductionmentioning

confidence: 99%

Phase-dependent photocatalytic selective oxidation of cyclohexane over copper vanadates

et al. 2022

View full text Add to dashboard Cite

show abstract

Section: Introductionmentioning

confidence: 99%

Phase-dependent photocatalytic selective oxidation of cyclohexane over copper vanadates

et al. 2022

View full text Add to dashboard Cite

show abstract

“…Cyclohexanol and cyclohexanone (KA oil) are the main products of the oxidation of cyclohexane; the technique of cyclohexane oxidation is one of the significant chemical reactions in the commercial industry on account of KA oil being an important intermediate of synthesizing nylon-66 and nylon-6 . However, a conventional pathway is a thermocatalytic procedure with high energy consumption and very strict reaction conditions using soluble cobalt or manganese as the thermal catalysts, resulting a great loss of energy and a waste of resources . Facing these challenges, the demands for an environmentally friendly cyclohexane oxidation technique with low-energy input, high conversion rate as well as high selectivity are greatly urgent.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Multilevel Structured MoS₂@Cu/Cu₂O@C Visible-Light-Driven Photocatalyst Derived from MOF–Guest Polyhedra for Cyclohexane Oxidation

Peng

Zhang

et al. 2020

ACS Sustainable Chem. Eng.

View full text Add to dashboard Cite

Selective oxidation of cyclohexane to KA oil (cyclohexanol and cyclohexanone) is one of the most important industrial procedure. In this study, we reported a remarkably enhanced cyclohexane oxidation under visible-light irradiation by a novel MoS2@Cu/Cu2O@C composite photocatalyst with multilevel hierarchy, which was prepared by immersing (NH4)2MoS4 guest into Cu-metal–organic framework (MOF) polyhedra host and subsequently pyrolyzing the Cu-MOF–guest polyhedra to encapsulate MoS2 into Cu/Cu2O@C. Importantly, the composite photocatalyst showed much better photocatalytic cyclohexane oxidation performance than that of the simple mechanical mixture of MoS2 and Cu/Cu2O@C. The distinct photocatalytic performance of MoS2@Cu/Cu2O@C composite can be ascribed to its heterojunction band reconstruction and unique multilevel architecture to facilitate the separation of photoinduced electrons and holes and generation reactive species during photoirradiation. The Cu nanoparticles in the MoS2@Cu/Cu2O@C composite also effectively capture electrons and prevent electron–hole recombination due to the surface plasmon resonance (SPR). The photogenerated holes (h+) and ·OH radical were supposed to be predominant components of the valence band (VB) and oxidize cyclohexane (C6H12) to produce cyclohexyl radical (C6H11·), which can be further oxidized to cyclohexanol and cyclohexanone. According to the above results, a possible photocatalytic mechanism was proposed.

show abstract

“…3). The independent active sites were formed via high-dispersedly immobilizing of active components onto nanoporous/nonporous supports, the excellent catalytic effects were achieved [5]- [9]. 4).…”

Section: Introductionmentioning

confidence: 99%

How Did the Response Surface Methodology Optimized Reaction Conditions Influence and Enhance the Catalytic Performance of Nanoprous Chitosan Immobilized Cobalt Porphyrinate

Huang

Yuan

2019

IEEE Access

View full text Add to dashboard Cite

How was the catalytic performance of the title catalyst influenced and enhanced by the Response Surface Methodology optimized-reaction conditions? Based on our experimental data, the effects of the Response Surface Methodology optimized reaction conditions on the catalytic performance were investigated in this paper. The experimental results show that, the micro alterations of various reaction parameter values resulted in the micro changes of cyclohexane conversion, further causing the positive and negative effects, and resulting in the synergy or the antagonism to cyclohexane conversion. The statistic study via Response Surface Methodology showed that, (1) the size order of the effects of the parameters on cyclohexane conversion was that, the quadratic terms > the mutual interaction terms ≈ the single variable terms; (2) compared to Traditional Optimization Method, Response Surface Methodology could more quickly offer the precise optimum values of reaction conditions. In the five recycle applications of the title catalyst, on average, the catalytic activity and the catalytic efficiency were respectively increased 50% and 25% than those obtained from the Traditional Optimization Method-optimized reaction conditions; (3) compared to the other similar catalysts reported in literatures, the present catalyst was a biomimetic catalyst with the highest Turnover Frequency value (6.5 × 10 5 h −1).

show abstract

New catalysts with dual-functionality for cyclohexane selective oxidation

Cited by 26 publications

References 48 publications

Phase-dependent photocatalytic selective oxidation of cyclohexane over copper vanadates

Phase-dependent photocatalytic selective oxidation of cyclohexane over copper vanadates

Synthesis of Multilevel Structured MoS₂@Cu/Cu₂O@C Visible-Light-Driven Photocatalyst Derived from MOF–Guest Polyhedra for Cyclohexane Oxidation

How Did the Response Surface Methodology Optimized Reaction Conditions Influence and Enhance the Catalytic Performance of Nanoprous Chitosan Immobilized Cobalt Porphyrinate

Contact Info

Product

Resources

About

New catalysts with dual-functionality for cyclohexane selective oxidation

Cited by 26 publications

References 48 publications

Phase-dependent photocatalytic selective oxidation of cyclohexane over copper vanadates

Phase-dependent photocatalytic selective oxidation of cyclohexane over copper vanadates

Synthesis of Multilevel Structured MoS2@Cu/Cu2O@C Visible-Light-Driven Photocatalyst Derived from MOF–Guest Polyhedra for Cyclohexane Oxidation

How Did the Response Surface Methodology Optimized Reaction Conditions Influence and Enhance the Catalytic Performance of Nanoprous Chitosan Immobilized Cobalt Porphyrinate

Contact Info

Product

Resources

About

Synthesis of Multilevel Structured MoS₂@Cu/Cu₂O@C Visible-Light-Driven Photocatalyst Derived from MOF–Guest Polyhedra for Cyclohexane Oxidation