The role of K in tuning oxidative dehydrogenation of ethane with CO2 to be selective toward ethylene

Li, Yingchun; Li, Linyi; Luo, Shi-Zhong; Huang, Xianbo; Shen, Jun; Jiang, Chengfa; Jing, Fangli

doi:10.1007/s42114-021-00280-7

Cited by 31 publications

(8 citation statements)

References 62 publications

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“…Three of the transitions are almost identical but involve Na, K, and Rb, respectively, In fact, all lead to the formation of (Na,K,Rb) 2 CrO 4 . These phases have at the very least been experimentally characterized and, in the case of (Na,K) 2 CrO 4 , observed to possess some catalytic ability. , This also applies to (Na,K,Rb) 2 Si 2 O 5 , − which is found on the left-hand side of the equations. The composition of the second product, on the other hand, takes the form of K 2 Si 4 O 9 , Rb 6 Si 10 O 23 , and kosmochlor (NaCrSi 2 O 6 ), respectively.…”

Section: Resultsmentioning

confidence: 88%

Discovery of Oxygen Carriers by Mining a First-Principle Database

et al. 2023

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Chemical looping is an innovative technique that relies, to a large extent, on the possibility of finding new oxygen carriers. Until now, these materials have primarily been identified via experimental techniques and therefrom derived insights. However, this is both costly and time-consuming. To speed-up this process, we have applied a computational screening approach based on energetic data retrieved from the Open Quantum Materials Database. In particular, we have considered combinations of all mono-, bi-, and trimetallic alloys and mixed oxides with up to three distinctive phases. Here, we specifically focus on a technique referred to as chemical looping oxygen uncoupling, which is especially suitable for solid fuels, e.g., combustion of biomass for negative CO 2 emissions. The formation energies obtained for the materials of interest were used to identify phase transitions that are likely to occur under conditions relevant for chemical looping oxygen uncoupling. Given these criteria, the initial list of 300000 materials is reduced by a factor of 20, and after filtering out rare, radioactive, toxic, or harmful elements only 1000 remain. When considering the abundance of elements in the ranking criteria, most of the highest ranking phases include Cu, Mn, and Fe. This adds credibility to the procedure, as many viable oxygen carriers for chemical looping oxygen uncoupling that have been studied experimentally contain these elements. While Cr-based materials have not been widely explored for this application, our study suggests that this might be worthwhile since these occur more frequently than Fe. Other elements that would be interesting as additional components include Ba, K, Na, Al, and Si.

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Section: Resultsmentioning

confidence: 88%

Discovery of Oxygen Carriers by Mining a First-Principle Database

et al. 2023

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“…The synergistic effect between the core and shell made the hybrid materials perform well in the CO 2 capture, which can greatly increase the CO 2 concentration in the pores and further accelerate the CO 2 photocatalytic reduction. 31 CO 2 -TPD was used to determine the basicity of catalyst surfaces 34–36 and the results were collected and are shown in Fig. 3(b).…”

Section: Resultsmentioning

confidence: 99%

A Z-scheme heterojunction of porphyrin-based core–shell Zr-MOF@Pro-COF-Br hybrid materials for efficient visible-light-driven CO₂ reduction

et al. 2023

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“…Many researches provided different approaches to reduce and react with CO2 emissions, such as using waste CO2 as an oxidant in the catalytic dehydrogenation of ethane to produce ethylene in the presence of potassium as a promoter (Li et al, 2021); the urgent need to reach zero CO2 emissions by increasing the potential of the hybrid power system from solar energy and fossil fuel by providing three possible pathways (Hong et al, 2021), utilizing a highly efficient metal-nitrogen-carbon (M-N-C) catalyst to transform CO2 into value-added products (Pellessier et al, 2021). This study demonstrated utilizing renewable energy as offset to reduce CO2.…”

Section: Fuel Consumption and Co2 Emissionsmentioning

confidence: 99%

A comparative analysis of the carbon dioxide emissions-energy profile in Kuwait: status quo versus 2030

Alrukaibi

AlSalem²

2022

JER is an international, peer-reviewed journal that publishes f

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Kuwait is among the leading countries globally in terms of its per capita consumption of electricity and water based on the energy outlook report released in 2019. In Kuwait, the CO2 (carbon dioxide) emissions rates have increased from the energy sector due to the burning of significant amounts of fossil fuels to meet the demands of electricity generation and water supply. Under these circumstances, the demanding analysis methodology to forecasting CO2 emissions from the energy sector, the per capita energy consumption and CO2 emissions were 8.9 toe per capita and 21.1 tonnes of CO2-eq emissions per capita, respectively. This paper aims to quantify a comparative analysis model and estimate an numeric magnitude for current and forecasting 2030 CO2 production totals from Kuwait's energy sector and its impact on average atmospheric temperature and energy production. The aggregate carbon intensity (ACI) was used as an indicator to evaluate the current energy situation and predict a model for Kuwait's CO2 emissions situation and identify how the energy demand and supply might evolve by 2030. The CO2 emissions for 2030 and the electricity consumption trend were assumed to be the 'business-as-usual' model using 2nd set of Fuel Analysis USEPA, with five fuel blend scenarios used as the energy sector's predicted fuel blends. The results found that the total CO2 emissions from the energy sector and the ACI of Kuwait in 2016 were 48.6 MtCO2 and 0.69 kgCO2/kWhr, respectively. The 2030 estimations indicated that using an 80% natural gas – 20% gas oil fuel blend in energy production resulted in CO2 emissions of approximately 66 MtCO2, with an ACI of 0.45 kgCO2/kW-hr. The CO2 offset from upcoming renewable energy projects is projected to be approximately 13%.

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The role of K in tuning oxidative dehydrogenation of ethane with CO2 to be selective toward ethylene

Cited by 31 publications

References 62 publications

Discovery of Oxygen Carriers by Mining a First-Principle Database

Discovery of Oxygen Carriers by Mining a First-Principle Database

A Z-scheme heterojunction of porphyrin-based core–shell Zr-MOF@Pro-COF-Br hybrid materials for efficient visible-light-driven CO₂ reduction

A comparative analysis of the carbon dioxide emissions-energy profile in Kuwait: status quo versus 2030

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The role of K in tuning oxidative dehydrogenation of ethane with CO2 to be selective toward ethylene

Cited by 31 publications

References 62 publications

Discovery of Oxygen Carriers by Mining a First-Principle Database

Discovery of Oxygen Carriers by Mining a First-Principle Database

A Z-scheme heterojunction of porphyrin-based core–shell Zr-MOF@Pro-COF-Br hybrid materials for efficient visible-light-driven CO2 reduction

A comparative analysis of the carbon dioxide emissions-energy profile in Kuwait: status quo versus 2030

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A Z-scheme heterojunction of porphyrin-based core–shell Zr-MOF@Pro-COF-Br hybrid materials for efficient visible-light-driven CO₂ reduction