On the use of infrared spectrometer as detector for Temperature Programmed (TP) techniques in catalysts characterization

Phung, Thanh Khoa; Garbarino, Gabriella

doi:10.1016/j.jiec.2016.11.045

Cited by 9 publications

(5 citation statements)

References 69 publications

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“…Regarding methodology, one study mentioned the utilization of an infrared spectrometer as a detector, enabling temperature-programmed experiments for studying the nature of adsorbed oxygen and the formation of products with high resolution. This offers a promising avenue for investigating the characteristics of adsorbed oxygen and the catalytic behavior of different OCM catalysts [93].…”

Section: Gas-phase Oxygen Activationmentioning

confidence: 99%

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: Gas-phase Oxygen Activationmentioning

confidence: 99%

Advances in Oxidative Coupling of Methane

Deng,

Chen,

Xia

et al. 2023

Atmosphere

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“…with confidence level of 95%. The statistical performance of empirical and phenomenological models was further assessed by the comparison of their prediction variances, σm 2 , with each other, as defined in accordance to Eq. ( 9), with the help of the standard F-test [56,57].…”

Section: Tpd Phenomenological Modellingmentioning

confidence: 99%

“…Thermoanalytical techniques are often associated with transient characterization methods that are designed to monitor certain sample properties as functions of time, usually accompanied by the simultaneous increase of temperature [1][2][3], allowing the acquisition of significant amount of information about the analyzed material properties in a short period of time. These thermonalytical techniques have been widely applied in several fields, like the investigation of the thermal stability and thermal and mechanical properties of polymers [4] and the characterization of heterogenous catalysts [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

“…In this context, temperature-programmed (TP) techniques play a unique role, as they may allow for characterization of catalyst properties and assessment of the physico-chemical interactions that take place between the catalyst surface and the reactive species [2,10]. Among the many available TP techniques, Temperature-Programmed Reduction (TPR), Temperature-Programmed Desorption (TPD), Temperature-Programmed Oxidation (TPO) and Temperature-Programmed Surface Reaction (TPSR) are of particular importance.…”

Section: Introductionmentioning

confidence: 99%

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Phenomenological approaches for quantitative temperature-programmed reduction (TPR) and desorption (TPD) analysis

Ros

Flores

Schwaab

et al. 2021

Journal of Industrial and Engineering Chemistry

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“…To overcome these limitations, TPD (temperature programmed desorption), which was demonstrated to be a solid approach for the identification and quantification of adsorbed species, 30–33 has been traditionally used to indirectly identify and quantify functional groups in activated carbons. 8,9,34–44 In such cases, the technique exploits the fact that each functional group decomposes within a specific temperature range, generating a few gaseous molecules that, for O-containing functional groups, usually include CO, CO 2 and H 2 O.…”

Section: Introductionmentioning

confidence: 99%