An Efficient Cr-TUD-1 Catalyst for Oxidative Dehydrogenation of Propane to Propylene with CO2 as Soft Oxidant

Burri, Abhishek; Hasib, Abdul; Mo, Yong-Hwan; Reddy, Benjaram M.; Park, Sang‐Eon

doi:10.1007/s10562-017-2282-3

Cited by 26 publications

(14 citation statements)

References 46 publications

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“…59 To better disperse CrO x species and facilitate mass transfer within the pores, TUD-1, with high surface area and unique 3D mesoporous network structure, has been introduced as support. 11 To ascertain the formation of CrO x with small, uniform crystals, a microwave irradiation method is used to prepare the catalysts. 5%Cr/TUD-1 exhibits higher C 3 H 8 conversion at ∼24% and C 3 H 6 selectivity at ∼90% at 550 °C (Table 2), while good stability at 8 h on stream is observed on 7%Cr/TUD-1.…”

Section: Oxidative Dehydrogenation Of Propane With Carbon Dioxidementioning

confidence: 99%

“…tion. 5,11 To address this issue, an alternative approach is to introduce soft oxidants to replace O 2 for ODHP, such as CO 2 , NO x , and S-containing compounds, as well as halogen/halides. Furthermore, the combination of these soft oxidants in ODHP offers avenues to directly utilize them for chemical conversion to reduce or mitigate acid-gas emissions, thereby adding environment-sustainability-energy benefits to ODHP reactions.…”

Section: Introductionmentioning

confidence: 99%

“…Though major progress has been made by using redox-active transition metal oxide catalysts, such as vanadium , and molybdenum, the presence of O 2 can cause overoxidation of olefins to carbon oxides (CO x ), resulting in the inefficient use of the reactant and low process selectivity. , Most recently, hexagonal boron nitride (h-BN) has emerged as an outstanding catalyst for O 2 –ODHP with high C 3 H 6 selectivity (e.g., 79% selectivity with 14% C 3 H 8 conversion at 490 °C) and well-suppressed overoxidation . To date studies have mainly focused on low-temperature activity and probing possible active sites and mechanisms, including surface oxy-functionalization, peculiar kinetic features, and radical chemistry in the gas phase. , Despite potential advantages, concerns of process flammability due to the presence of O 2 exist and might impair practical implementation. , To address this issue, an alternative approach is to introduce soft oxidants to replace O 2 for ODHP, such as CO 2 , NO x , and S-containing compounds, as well as halogen/halides. Furthermore, the combination of these soft oxidants in ODHP offers avenues to directly utilize them for chemical conversion to reduce or mitigate acid-gas emissions, thereby adding environment-sustainability-energy benefits to ODHP reactions.…”

Section: Introductionmentioning

confidence: 99%

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Oxidative Dehydrogenation of Propane to Propylene with Soft Oxidants via Heterogeneous Catalysis

et al. 2021

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Oxidative dehydrogenation of propane to propylene can be achieved using conventional, oxygen-assisted dehydrogenation of propane (O2–ODHP) or via the use of soft oxidants, such as CO2, N2O, S-containing compounds, and halogens/halides. The major roles of soft oxidants include inhibiting overoxidation and improving propylene selectivity, which are considered to be current challenges in O2-assisted dehydrogenation. For both CO2– and N2O–ODHP reactions, significant efforts have been devoted to developing redox-active (e.g., chromium, vanadate, iron, etc.), nonredox-type main group metal oxide (e.g., group IIIA, gallium), and other transition metal/metal oxide catalysts (e.g., molybdenum, palladium platinum, rhodium, ruthenium, etc.), as well as zeolite-based catalysts with adjustable acid–base properties, unique pore structures, and topologies. Metal sulfides have shown promising performance in DHP, whereas the development of suitable catalysts has lagged for SO2- or S-assisted ODHP. Recently, significant efforts have been focused on homogeneous and heterogeneous ODHP using halogens (e.g., Br2, I2, Cl2, etc.) and hydrogen halides (e.g., HCl and HBr) for the development of facile processes for C3H6 synthesis. This Review aims to provide a critical, comprehensive review of recent advances in oxidative dehydrogenation of propane with these soft oxidants, particularly highlighting the current state of understanding of the following factors: (i) relationships between composition, structure, and catalytic performance, (ii) effects of the support, acidity, and promoters, (iii) reaction pathway and mechanistic insights, and (iv) the various roles of soft oxidants. Theoretical and computational insights toward understanding reaction mechanisms and catalyst design principles are also covered. Future research opportunities are discussed in terms of catalyst design and synthesis, deactivation and regeneration, reaction mechanisms, and alternative approaches.

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Section: Oxidative Dehydrogenation Of Propane With Carbon Dioxidementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Oxidative Dehydrogenation of Propane to Propylene with Soft Oxidants via Heterogeneous Catalysis

et al. 2021

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“…Chromium oxide enhanced propane conversion and the propylene selectivity by expelling H 2 produced in the ODH reaction [112]. The catalytic performance of Cr-supported catalysts was observed by the character of chromium categories on the support surface of the catalysts [121][122][123][124][125] Park et al found that different Cr doping of Cr-TUD-1 catalysts (3, 5, 7 and 9 wt.%) with soft oxidant (CO 2 ) were formed by MW irradiation and investigated the propane oxidative dehydrogenation [126]. The effect of reaction temperature on the oxidative dehydrogenation of propane in the existence of CO 2 as a mild oxidant over the Cr-TUD-1 catalyst (7 wt.%) was investigated thoroughly to improve the catalytic activity.…”

Section: Role Of Co 2 On Dehydrogenation Of Propanementioning

confidence: 99%

The Role of CO2 as a Mild Oxidant in Oxidation and Dehydrogenation over Catalysts: A Review

et al. 2020

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Carbon dioxide (CO2) is widely used as an enhancer for industrial applications, enabling the economical and energy-efficient synthesis of a wide variety of chemicals and reducing the CO2 levels in the environment. CO2 has been used as an enhancer in a catalytic system which has revived the exploitation of energy-extensive reactions and carry chemical products. CO2 oxidative dehydrogenation is a greener alternative to the classical dehydrogenation method. The availability, cost, safety, and soft oxidizing properties of CO2, with the assistance of appropriate catalysts at an industrial scale, can lead to breakthroughs in the pharmaceutical, polymer, and fuel industries. Thus, in this review, we focus on several applications of CO2 in oxidation and oxidative dehydrogenation systems. These processes and catalytic technologies can reduce the cost of utilizing CO2 in chemical and fuel production, which may lead to commercial applications in the imminent future.

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“…As the dehydrogenation of propane to propylene can generate a great number of hydrogens and the hydrogenation of CO 2 to light olefins needs hydrogen greatly, a promising approach is the coupling of propane with CO 2 to produce propylene, which can not only use the hydrogen but also change the reaction balance of propane dehydrogenation to increase the yield of propylene. Although a few studies on the reaction of propane with CO 2 to produce propylene were reported, CO 2 was only as the oxidant …”

Section: Introductionmentioning

confidence: 99%

Catalytic Performance of In/HZSM‐5 for Coupling Propane with CO₂ to Propylene

et al. 2020

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The dehydrogenation of propane to propylene is endothermic reaction will generate hydrogen, while the hydrogenation of CO2 to light olefins is exothermic reaction with hydrogen as reactant. Using the CO2 hydrogenation reaction to consume the hydrogen from the propane dehydrogenation reaction, which is more beneficial to propylene generation. Thus, a promising approach of coupling propane with CO2 to produce propylene was proposed. A simple wetness impregnation method was used to prepare the In/HZSM‐5 composite catalyst for this coupling reaction. It was characterized by means of XRD, SEM, TEM, H2‐TPR, NH3‐TPD, XPS, TG, and N2 isothermal adsorption‐desorption. Effects of indium loading, feed volume ratio of propane to CO2, reaction pressure and temperature on the coupling of propane with CO2 to propylene were investigated in a fixed‐bed reactor. When the mass content of indium is 12%, the feeding volume ratio of propane to CO2 is 1 : 4, the reaction pressure is 0.3 MPa and the reaction temperature is 580 °C, the propylene selectivity is 71.41%, as well as the conversion per pass of propane and CO2 is 17.74% and 5.08%, respectively.

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An Efficient Cr-TUD-1 Catalyst for Oxidative Dehydrogenation of Propane to Propylene with CO2 as Soft Oxidant

Cited by 26 publications

References 46 publications

Oxidative Dehydrogenation of Propane to Propylene with Soft Oxidants via Heterogeneous Catalysis

Oxidative Dehydrogenation of Propane to Propylene with Soft Oxidants via Heterogeneous Catalysis

The Role of CO2 as a Mild Oxidant in Oxidation and Dehydrogenation over Catalysts: A Review

Catalytic Performance of In/HZSM‐5 for Coupling Propane with CO₂ to Propylene

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An Efficient Cr-TUD-1 Catalyst for Oxidative Dehydrogenation of Propane to Propylene with CO2 as Soft Oxidant

Cited by 26 publications

References 46 publications

Oxidative Dehydrogenation of Propane to Propylene with Soft Oxidants via Heterogeneous Catalysis

Oxidative Dehydrogenation of Propane to Propylene with Soft Oxidants via Heterogeneous Catalysis

The Role of CO2 as a Mild Oxidant in Oxidation and Dehydrogenation over Catalysts: A Review

Catalytic Performance of In/HZSM‐5 for Coupling Propane with CO2 to Propylene

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Catalytic Performance of In/HZSM‐5 for Coupling Propane with CO₂ to Propylene