Efficient metal borate catalysts for oxidative dehydrogenation of propane

Qian, Heming; Sun, Fulin; Huang, Chao; Zhang, Wei; Fang, Kegong; Wang, Yingjun

doi:10.1039/d1cy01792f

Cited by 14 publications

(10 citation statements)

References 56 publications

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“…The metal-free B-containing materials, such as h-BN, B 2 O 3 , B substance, and BP, have been reported to exhibit high catalytic performance in the ODHP reaction. Moreover, novel metal borate catalysts such as CoB 4 O 7 and NiB 2 O 6 are synthesized and exhibited remarkable structural stability, which can effectively inhibit boron leaching . In these materials, the second element is used as a frame support to wrap boron atoms, and it can also assist in the formation of oxygenated sites to activate the reaction.…”

Section: Resultsmentioning

confidence: 99%

“…Moreover, novel metal borate catalysts such as CoB 4 O 7 and NiB 2 O 6 are synthesized and exhibited remarkable structural stability, which can effectively inhibit boron leaching. 6 In these materials, the second element is used as a frame support to wrap boron atoms, and it can also assist in the formation of oxygenated sites to activate the reaction. Therefore, understanding the role of the second element is expected to benefit the development of novel boron-containing catalysts with improved olefin selectivity.…”

Section: Odhp Mechanism Catalyzed By Bpmentioning

confidence: 99%

“…The direct DH is endothermic in nature; to achieve acceptable conversion and high yield of target olefins, substantial energy input and high temperature are required, and the overall energy efficiency is limited. Oxidative dehydrogenation of propane (ODHP) offers a promising alternative to the industrialized PDH. , Previous studies showed that the supported vanadium oxide catalysts possess promising activity for ODHP, however, one challenge is the serious overoxidation to CO x , causing significant CO 2 emission . Since the independent pioneering work of Hermans, , Lu, , and Su, the metal-free hexagonal boron nitride (h-BN) has been established as an unique and hitherto unanticipated catalyst for the ODHP to corresponding olefins with impressive selectivity.…”

Section: Introductionmentioning

confidence: 99%

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Promoting Catalytic Activity of Boron by Phosphor in Propane Oxidative Dehydrogenation

et al. 2022

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Metal-free boron-containing materials show excellent performance in the oxidative dehydrogenation of propane (ODHP) reaction, while it remains unclear how the composition of the materials may influence their catalytic activity. Herein, by using boron phosphide (BP) as the test bed, a density functional theory study of the influences of P atoms in the backbone and the extent of surface oxidation on the catalytic activity was reported to address the structure−catalytic activity relationship in the ODHP reaction. The calculations show that (1) the P element in BP may influence the composition of the occupied states of BP (P, 47.3%; O, 98.8%; and N, 81.7%) and bring significant impact on its properties. The influence of O in the B 2 O 3 (O) and N in the h-BN (N) was also analyzed for comparison. (2) The more oxidized surface (BP-H) is more reactive than the less oxidized surface (BP-L) in view of the lower free-energy barrier to the rate-determining step (45.8 vs 57.3 kcal/mol for the dehydrogenation of propane step, respectively). This study explains the role of the P element and the effect of surface oxidation and provides a comprehensive understanding of the structure−activity relationship of boron-containing materials in ODHP.

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Section: Resultsmentioning

confidence: 99%

Section: Odhp Mechanism Catalyzed By Bpmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Promoting Catalytic Activity of Boron by Phosphor in Propane Oxidative Dehydrogenation

et al. 2022

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“…Herein, we demonstrated that, during the ODH reaction catalyzed by h -BN, the in-situ formed olefins, which were generally considered chemically inert in boron-based catalytic systems 17 , 23 , 24 , played a crucial role in promoting parent alkane conversion and cracking of C-C bonds. The experiments of co-feeding mixture of alkane and olefin together with DFT calculations revealed the synergistic reaction routes of the two kinds of hydrocarbons.…”

Section: Introductionmentioning

confidence: 99%

Auto-accelerated dehydrogenation of alkane assisted by in-situ formed olefins over boron nitride under aerobic conditions

Liu

Fan

et al. 2023

Nat Commun

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Oxidative dehydrogenation (ODH) of alkane over boron nitride (BN) catalyst exhibits high olefin selectivity as well as a small ecological carbon footprint. Here we report an unusual phenomenon that the in-situ formed olefins under reactions are in turn actively accelerating parent alkane conversion over BN by interacting with hydroperoxyl and alkoxyl radicals and generating reactive species which promote oxidation of alkane and olefin formation, through feeding a mixture of alkane and olefin and DFT calculations. The isotope tracer studies reveal the cleavage of C-C bond in propylene when co-existing with propane, directly evidencing the deep-oxidation of olefins occur in the ODH reaction over BN. Furthermore, enhancing the activation of ethane by the in-situ formed olefins from propane is successfully realized at lower temperature by co-feeding alkane mixture strategy. This work unveils the realistic ODH reaction pathway over BN and provides an insight into efficiently producing olefins.

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“…Qian et al investigated efficient metal borate catalysts for oxidative dehydrogenation of propane (ODHP). 31 Two metal borate catalysts (CoB 4 O 7 and Ni 3 B 2 O 6 ) were prepared by a coprecipitation method. Reaction tests showed that both metal borates could catalyze propane dehydrogenation efficiently at 450-540 °C with high selectivity and stability.…”

Section: Introductionmentioning

confidence: 99%

Exploration of the oxygen reduction reaction activity of four transition metal borates: synthesis, structure and characterization

Deng

Chen

et al. 2023

Dalton Trans.

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Efficient metal borate catalysts for oxidative dehydrogenation of propane

Abstract: Boron-based catalysts have attracted attention due to their high selectivity to light olefins in the catalytic oxidative dehydrogenation of propane (ODHP) in the recent years, however, which still faced the...

Cited by 14 publications

References 56 publications

Promoting Catalytic Activity of Boron by Phosphor in Propane Oxidative Dehydrogenation

Promoting Catalytic Activity of Boron by Phosphor in Propane Oxidative Dehydrogenation

Auto-accelerated dehydrogenation of alkane assisted by in-situ formed olefins over boron nitride under aerobic conditions

Exploration of the oxygen reduction reaction activity of four transition metal borates: synthesis, structure and characterization

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