Activity studies of vanadium, iron, carbon and mixed oxides based catalysts for the oxidative dehydrogenation of ethylbenzene to styrene: a review

Kainthla, Itika; Bhanushali, Jayesh T.; Keri, Rangappa S.; Nagaraja, Bhari Mallanna

doi:10.1039/c5cy00996k

Cited by 47 publications

(23 citation statements)

References 137 publications

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“…Furthermore, with the development of fracking technology, a large amount of shale gas can be extracted by this cost-effective method; propane is a main constituent of shale gas. The price of propane has decreased obviously, which provides a great opportunity for on-purpose catalytic dehydrogenation of propane to propylene [1,[14][15][16]. Over the last several years, a number of reviews have summarized the oxidative dehydrogenation of alkanes to olefins by using nanocarbons, boron nitride, metals, and metal oxides [2,4,8,[14][15][16].…”

Section: Introductionmentioning

confidence: 99%

State-of-the-art catalysts for direct dehydrogenation of propane to propylene

Yang

Wang

et al. 2019

Chinese Journal of Catalysis

189

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Section: Introductionmentioning

confidence: 99%

State-of-the-art catalysts for direct dehydrogenation of propane to propylene

Yang

Wang

et al. 2019

Chinese Journal of Catalysis

189

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“…At present, catalytic dehydrogenation (DH) of ethylbenzene accounts for ~90% of the styrene produced worldwide. This well-established approach suffers from high energy consumption, equilibrium-limited ethylbenzene conversion, and complex product separation, leading to significant CO 2 emissions 3 , 4 . To compensate the heat required by the highly endothermic DH reaction, the industrial DH process uses significant amount of superheated steam as a heat source.…”

Section: Introductionmentioning

confidence: 99%

A tailored multi-functional catalyst for ultra-efficient styrene production under a cyclic redox scheme

et al. 2021

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Styrene is an important commodity chemical that is highly energy and CO2 intensive to produce. We report a redox oxidative dehydrogenation (redox-ODH) strategy to efficiently produce styrene. Facilitated by a multifunctional (Ca/Mn)1−xO@KFeO2 core-shell redox catalyst which acts as (i) a heterogeneous catalyst, (ii) an oxygen separation agent, and (iii) a selective hydrogen combustion material, redox-ODH auto-thermally converts ethylbenzene to styrene with up to 97% single-pass conversion and >94% selectivity. This represents a 72% yield increase compared to commercial dehydrogenation on a relative basis, leading to 82% energy savings and 79% CO2 emission reduction. The redox catalyst is composed of a catalytically active KFeO2 shell and a (Ca/Mn)1−xO core for reversible lattice oxygen storage and donation. The lattice oxygen donation from (Ca/Mn)1−xO sacrificially stabilizes Fe3+ in the shell to maintain high catalytic activity and coke resistance. From a practical standpoint, the redox catalyst exhibits excellent long-term performance under industrially compatible conditions.

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“…This traditional process is typically restricted by thermodynamics and a large amount of energy dissipation 2 . To overcome these limitations, tremendous efforts have been devoted to developing advanced technologies for the production of styrenes 3 . Among these technologies, the oxidative dehydrogenation (ODH) of alkanes and arenes by carbon catalysis have been regarded as an effective and sustainable approach to tackling the barrier 4 , 5 .…”

Section: Introductionmentioning

confidence: 99%

Photo-fluorination of nanodiamonds catalyzing oxidative dehydrogenation reaction of ethylbenzene

Luo

Wan

et al. 2021

Nat Commun

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Styrene is one of the most important industrial monomers and is traditionally synthesized via the dehydrogenation of ethylbenzene. Here, we report a photo-induced fluorination technique to generate an oxidative dehydrogenation catalyst through the controlled grafting of fluorine atoms on nanodiamonds. The obtained catalyst has a fabulous performance with ethylbenzene conversion reaching 70% as well as styrene yields of 63% and selectivity over 90% on a stream of 400 °C, which outperforms other equivalent benchmarks as well as the industrial K−Fe catalysts (with a styrene yield of 50% even at a much higher temperature of ca. 600 °C). Moreover, the yield of styrene remains above 50% after a 500 h test. Experimental characterizations and density functional theory calculations reveal that the fluorine functionalization not only promotes the conversion of sp3 to sp2 carbon to generate graphitic layers but also stimulates and increases the active sites (ketonic C=O). This photo-induced surface fluorination strategy facilitates innovative breakthroughs on the carbocatalysis for the oxidative dehydrogenation of other arenes.

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Activity studies of vanadium, iron, carbon and mixed oxides based catalysts for the oxidative dehydrogenation of ethylbenzene to styrene: a review

Abstract: The activity of V, Fe and carbon based catalysts depends on V5+, Fe3+and active carbon sites. The mixed oxide catalysts show superior activity than individual oxides.

Cited by 47 publications

References 137 publications

State-of-the-art catalysts for direct dehydrogenation of propane to propylene

State-of-the-art catalysts for direct dehydrogenation of propane to propylene

A tailored multi-functional catalyst for ultra-efficient styrene production under a cyclic redox scheme

Photo-fluorination of nanodiamonds catalyzing oxidative dehydrogenation reaction of ethylbenzene

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