Direct Conversion of Methane to Value-Added Hydrocarbons over Alumina-Supported Cobalt Modified by Alkaline Earth Catalysts

Ampansang, Santipab; Sringam, S.; Somchuea, Pooripong; Witoon, Thongthai; Wattanakit, Chularat; Chareonpanich, Metta; Sohn, Hiesang; Seubsai, Anusorn

doi:10.1007/s11244-023-01854-z

Cited by 1 publication

(2 citation statements)

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“…Alkali-metal-modified alkaline earth metal oxides were an early class of OCM catalysts, and researchers tried to improve the catalytic activity for OCM by adding various additives [18]. Among them, the effects of Li, Na, K, and Cs-modified MgO, CaO, SrO, and BaO on the performance of the OCM reaction were more widely studied.…”

Section: Alkali-metal-modified Alkaline Earth Metal Oxidementioning

confidence: 99%

“…Gan et al used X-ray photoelectron spectroscopy and 16 O/ 18 O isotope exchange reac tions to investigate the effect of B-site elements in LaBO3 (B = Al, Ga, In, Yb, Co, Mn, Fe perovskite on the catalytic performance of OCM applications. It was found that LaAlO3 LaGaO3, LaInO3, and LaYbO3 have higher activities for the generation of C2 hydrocarbon Gan et al used X-ray photoelectron spectroscopy and 16 O/ 18 O isotope exchange reactions to investigate the effect of B-site elements in LaBO 3 (B = Al, Ga, In, Yb, Co, Mn, Fe) perovskite on the catalytic performance of OCM applications. It was found that LaAlO 3 , LaGaO 3 , LaInO 3 , and LaYbO 3 have higher activities for the generation of C 2 hydrocarbons in the OCM reaction.…”

Section: Perovskite-type Oxidesmentioning

confidence: 99%

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Advances in Oxidative Coupling of Methane

Deng,

Chen,

Xia

et al. 2023

Atmosphere

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C2+ hydrocarbons, especially C2+ olefins, as important basic chemical raw materials, mainly come from petroleum cracking. With the increasing scarcity of petroleum resources, the search for new olefins production routes has become the focus of research, and the production of olefins by the oxidative coupling of methane (OCM) process has attracted extensive attention. The OCM route is an important alternative to the production of olefins from petroleum resources and is also an important direction for the development of efficient and clean utilization of natural gas. In this paper, the mechanism, catalysts, and other key factors for the production of olefins by methane oxidative coupling are reviewed. The mechanism of OCM, including the reaction pathway and the formation of intermediate products, is introduced. Then, commonly used catalysts, such as alkali metal/alkaline earth metal oxides, rare earth metal oxides, composite metal oxides with special structures, and classical catalysts Mn/Na2WO4/SiO2, and their mechanisms of action in the reaction are discussed. In addition, the application of chemical looping oxidative coupling of methane (CLOCM) in olefin production is also investigated, which is a promising alternative way due to the high selectivity of olefins and the low cost of catalysts owing to the excellent performance of the catalyst recycling. These studies will help to further understand the mechanism of OCM for olefin production and provide guidance and support for applications in related fields.

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Section: Alkali-metal-modified Alkaline Earth Metal Oxidementioning

confidence: 99%