An Oxygen‐Deficient Perovskite as Selective Catalyst in the Oxidation of Alkyl Benzenes

Aguadero, Ainara; Falcón, Horacio; Campos‐Martín, Jose M.; Al-Zahrani, S.M.; Fierro, J.L.G.; Alonso, J. A.

doi:10.1002/anie.201007941

Cited by 56 publications

(22 citation statements)

References 22 publications

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“…Recently, great progress has been made in the catalytic aerobic oxidation of hydrocarbons in the presence of N-hydroxyphthalimide (NHPI), [13][14] and a variety of catalysts have been introduced into the oxidation of ethylbenzene. [11,[15][16][17][18][19][20][21] Although metallocomplexes, such as metallophthalocyanines (MPc), [15] have exhibited excellent catalytic activity in the reaction, they suffer the drawbacks of homogeneous features and deactivation by decomposition and formation of inactive di-oxos. [22][23][24] Incorporation of the catalytic active molecules into support is an effective method to solve the above problems.…”

Section: Introductionmentioning

confidence: 99%

“…Varied transition‐metal‐containing inorganic materials have been developed as the catalysts for the oxidation using molecular oxygen as the sole oxidant, but the conversion of substrate still has much room for improvement. Recently, great progress has been made in the catalytic aerobic oxidation of hydrocarbons in the presence of N‐hydroxyphthalimide (NHPI), and a variety of catalysts have been introduced into the oxidation of ethylbenzene ,. Although metallocomplexes, such as metallophthalocyanines (MPc), have exhibited excellent catalytic activity in the reaction, they suffer the drawbacks of homogeneous features and deactivation by decomposition and formation of inactive di‐oxos .…”

Section: Introductionmentioning

confidence: 99%

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Synergistic Catalytic Oxidation of Ethylbenzene to Acetophenone by Metallophthalocyanine Intercalated Layered Double Hydroxide with Oxygen

et al. 2018

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The organic‐inorganic hybrid material originated from metallophthalocyanine and layered double hydroxide has been identified as bifunctional catalyst for the oxidation of ethylbenzene to acetophenone. The hybrids exhibited excellent catalytic activity in the selective oxidation through O2/NHPI (N‐hydroxyphthalimide) system with excellent selectivity of acetophenone. The hybrid could accelerate not only the formation of hydroperoxide, but also the decomposition of hydroperoxide. Further, the catalyst also exhibited high activity in the transformation of 1‐phenylethanol to acetophenone. The present catalytic system could also catalyze the aerobic oxidation of varied alkyl arenes under the optimized reaction conditions. A series of controlled experiments suggested that the basicity of the hybrid benefited for the catalytic activity, and synergistic effect might exist between the basicity and the activity of metallophthalocyanine during the oxidation. On the basis of obtained results and Hammett experiment, a possible mechanism of the oxidation of ethylbenzene under the hybrid in the presence O2/NHPI has been proposed.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Synergistic Catalytic Oxidation of Ethylbenzene to Acetophenone by Metallophthalocyanine Intercalated Layered Double Hydroxide with Oxygen

et al. 2018

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“…Mixed ion-electronic conductors (MIECs) are multifunctional materials, and widely used as catalysts [1,2], electrodes of fuel cells and membranes [3][4][5]. MIEC membranes for separating oxygen from air have received increasing attentions since the membrane process is highly efficient technology and is more environmentally friendly and economical than the traditional industrial separation processes [6,7].…”

Section: Introductionmentioning

confidence: 99%

Degradation and stabilization of perovskite membranes containing silicon impurity at low temperature

Liu

Zhu

et al. 2015

Journal of Membrane Science

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“…Mixed ionic-electronic conducting (MIEC) oxides are promising candidate materials for catalysts, [1] electrodes of batteries and fuel cells, [2] and also oxygen-transporting membranes (OTMs). [3] OTMs have gained increasing attention owing to their potential applications in oxygen supply, [4] CO 2 capture integrated in oxy-fuel power plants, [5] and catalytic membrane reactors.…”

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confidence: 99%

A Mixed Ionic and Electronic Conducting Dual‐Phase Membrane with High Oxygen Permeability

et al. 2015

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To combine good chemical stability and high oxygen permeability, a mixed ionic-electronic conducting (MIEC) 75 wt% Ce(0.85)Gd(0.1)Cu(0.05)O(2-δ)-25 wt% La(0.6)Ca(0.4)FeO(3-δ)(CGCO-LCF) dual-phase membrane based on a MIEC-MIEC composite has been developed. Copper doping into Ce(0.9)Gd(0.1)O(2-δ) (CGO) oxide enhances both ionic and electronic conductivity, which then leads to a change from ionic conduction to mixed conduction at elevated temperatures. For the first time we demonstrate that an intergranular film with 2-10 nm thickness containing Ce, Ca, Gd, La, and Fe has been formed between the CGCO grains in the CGCO-LCF one-pot dual-phase membrane. A high oxygen permeation flux of 0.70 mL min(-1) cm(-2) is obtained by the CGCO-LCF one-pot dual-phase membrane with 0.5 mm thickness at 950 °C using pure CO2 as the sweep gas, and the membrane shows excellent stability in the presence of CO2 even at lower temperatures (800 °C) during long-term operation.

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An Oxygen‐Deficient Perovskite as Selective Catalyst in the Oxidation of Alkyl Benzenes

Cited by 56 publications

References 22 publications

Synergistic Catalytic Oxidation of Ethylbenzene to Acetophenone by Metallophthalocyanine Intercalated Layered Double Hydroxide with Oxygen

Synergistic Catalytic Oxidation of Ethylbenzene to Acetophenone by Metallophthalocyanine Intercalated Layered Double Hydroxide with Oxygen

Degradation and stabilization of perovskite membranes containing silicon impurity at low temperature

A Mixed Ionic and Electronic Conducting Dual‐Phase Membrane with High Oxygen Permeability

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