Oxidative coupling of methane over natural calcium compounds in fixed- and fluidized-bed reactors

Wakatsuki, Toshiya; Yamamura, Masami; Okado, Hideo; Chaki, Kazutoshi; Okada, Shusuke; Inaba, Kanako; Suzuki, Shingo; Yoshinari, Takehisa

doi:10.1016/s0167-2991(97)80354-0

Cited by 4 publications

(2 citation statements)

References 10 publications

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“…Then, for higher gas space time, the secondary reaction decreases C 2 + selectivity. This analysis explains the results reported by many authors that C 2 + selectivity drastically decreases with increasing conversion of methane − and stresses the fact that the gas-phase mechanism is very important in the OCM reaction.…”

Section: Resultssupporting

confidence: 86%

Kinetic Modeling of the Oxidative Coupling of Methane

Simon¹,

Baronnet²,

Marquaire³

2007

Ind. Eng. Chem. Res.

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In this study, we propose an original approach derived from Benson's techniques to estimate the kinetic parameters of surface reactions. This method allows one to write the heterogeneous mechanism of the oxidative coupling of methane used in the Chemkin Surface Program. Experimental investigations were performed and compared to simulated values derived from a kinetic model, taking into account heterogeneous and gasphase reactions.

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Section: Resultssupporting

confidence: 86%

Kinetic Modeling of the Oxidative Coupling of Methane

Simon¹,

Baronnet²,

Marquaire³

2007

Ind. Eng. Chem. Res.

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“…Other types of reactor configurations that have been proposed for OCM include fluidized bed reactors, ,− solid-oxide fuel cell, − microwave reactors, − plasma reactors, − and chemical looping reactors. ,− The primary focus of this review is to provide an extensive evaluation of membrane utilization in the OCM application, with a particular emphasis on MIEC membranes. To gain a comprehensive understanding of various reactor concepts, we recommend referring to well-regarded reviews on the subject matter. ,,, …”

Section: Technology Status and Challengesmentioning

confidence: 99%

Divide to Conquer: On the Use of Distributed Feed Strategies in Oxidative Coupling of Methane

Alahmadi,

Bavykina,

Morlanes

et al. 2023

Ind. Eng. Chem. Res.

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The oxidative coupling of methane (OCM) represents a promising method for the direct conversion of methane into ethylene, the most highly sought-after olefin in the petrochemical market. Nevertheless, the adoption of the OCM in industrial applications has been hampered by inherent chemical and engineering challenges. As a result, research endeavors have been directed toward developing innovative strategies to enhance the performance of the OCM process. This review offers a comprehensive overview of the challenges faced by the OCM, which has led to research exploring the use of a distributed feed policy. In this approach, methane and oxygen (the reactants for the OCM) are introduced separately, either through multiple oxygen injection points in the case of packed-bed reactors or into two distinct compartments in the case of membrane reactors. Additionally, we present an overview of the various types of membranes utilized in this context. More particularly, we focus on the use of mixed-ionic-electronic-conducting (MIEC) membranes to address the challenges of OCM. Due to their unique ionic conductive properties, MIEC membranes help to increase the overall efficiency of the OCM process. For example, an MIEC membrane intensifies the process for both air separation and the OCM reaction being conducted in a single unit, consequently simplifying upstream processing. It also aids in conducting the OCM reaction in a much safer environment, where gas-phase reactions of methane and oxygen are eliminated. With oxygen being a limited reactant in the OCM, this configuration also helps achieve higher methane conversion by allowing the safe feeding of more oxygen. Additionally, higher selectivity can be achieved by suppressing gas-phase reactions. In this case, oxygen is directly available in the catalyst zone. Finally, this review investigates the chemical and mechanical stability of MIEC membranes for OCM applications, and we conclude with important remarks and outlooks.

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From fundamentals to chemical engineering on oxidative coupling of methane for ethylene production: A review

Liu

Yue

et al. 2022

Carbon Resources Conversion

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Oxidative coupling of methane over natural calcium compounds in fixed- and fluidized-bed reactors

Cited by 4 publications

References 10 publications

Kinetic Modeling of the Oxidative Coupling of Methane

Kinetic Modeling of the Oxidative Coupling of Methane

Divide to Conquer: On the Use of Distributed Feed Strategies in Oxidative Coupling of Methane

From fundamentals to chemical engineering on oxidative coupling of methane for ethylene production: A review

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