scholarly journals Cooperative carbon capture and steam regeneration with tetraamine-appended metal–organic frameworks

Science ◽  
2020 ◽  
Vol 369 (6502) ◽  
pp. 392-396
Author(s):  
Eugene J. Kim ◽  
Rebecca L. Siegelman ◽  
Henry Z. H. Jiang ◽  
Alexander C. Forse ◽  
Jung-Hoon Lee ◽  
...  
Keyword(s):  
Natural Gas ◽  
Flue Gas ◽  
Carbon Capture ◽  
Power Plants ◽  
Metal Organic Frameworks ◽  
The United States ◽  
Carbon Intensity ◽  
Extreme Conditions ◽  
Metal Organic ◽  
Adsorption Desorption

Natural gas has become the dominant source of electricity in the United States, and technologies capable of efficiently removing carbon dioxide (CO2) from the flue emissions of natural gas–fired power plants could reduce their carbon intensity. However, given the low partial pressure of CO2 in the flue stream, separation of CO2 is particularly challenging. Taking inspiration from the crystal structures of diamine-appended metal–organic frameworks exhibiting two-step cooperative CO2 adsorption, we report a family of robust tetraamine-functionalized frameworks that retain cooperativity, leading to the potential for exceptional efficiency in capturing CO2 under the extreme conditions relevant to natural gas flue emissions. The ordered, multimetal coordination of the tetraamines imparts the materials with extraordinary stability to adsorption-desorption cycling with simulated humid flue gas and enables regeneration using low-temperature steam in lieu of costly pressure or temperature swings.

scholarly journals Selective Adsorption-Based Separation of Flue Gas and Natural Gas in Zirconium Metal-Organic Frameworks Nanocrystals

Molecules ◽  
2019 ◽  
Vol 24 (9) ◽  
pp. 1822 ◽  
Author(s):  
Pengli Li ◽  
Yongli Shen ◽  
Dandan Wang ◽  
Yanli Chen ◽  
Yunfeng Zhao
Keyword(s):  
Natural Gas ◽  
Flue Gas ◽  
Carbon Capture ◽  
High Efficiency ◽  
Selective Adsorption ◽  
Metal Organic Frameworks ◽  
Adsorption Sites ◽  
Separation Factors ◽  
Simple Processing ◽  
Metal Organic

Carbon capture from flue gas and natural gas offers a green path to construct a net-zero emissions economic system. Selective adsorption-based gas separation by employing metal-organic frameworks (MOFs) is regarded as a promising technology due to the advantages of simple processing, easy regeneration and high efficiency. We synthesized two Zirconium MOFs (UiO-66 and UiO-66-NH2) nanocrystals for selective capture and further removal of CO2 from flue gas and natural gas. In particular, UiO-66-NH2 nanocrystals have a smaller grain size, a large amount of defects, and pending –NH2 groups inside their pores which display effective CO2 selective adsorption abilities over CH4 and N2 with the theoretical separation factors of 20 and 7. This breakthrough experiment further verified the selective adsorption-based separation process of natural gas and flue gas. In one further step, we used the Monte Carlo simulation to investigate the optimized adsorption sites and energy of CO2, N2 and CH4 molecules in the gas mixture. The significantly large adsorption energy of CO2 (0.32 eV) over N2 (0.19 eV) and N2 (0.2 eV) may help us to reveal the selective adsorption mechanism.

scholarly journals Controlled Synthesis of Metal–Organic Frameworks in Scalable Open-Porous Contactor for Maximizing Carbon Capture Efficiency

JACS Au ◽  
2021 ◽  
Author(s):  
Young Hun Lee ◽  
YongSung Kwon ◽  
Chaehoon Kim ◽  
Young-Eun Hwang ◽  
Minkee Choi ◽  
...  
Keyword(s):  
Carbon Capture ◽  
Metal Organic Frameworks ◽  
Capture Efficiency ◽  
Controlled Synthesis ◽  
Metal Organic

Screening the Effect of Water Vapour on Gas Adsorption Performance: Application to CO2Capture from Flue Gas in Metal-Organic Frameworks

ChemSusChem ◽  
2017 ◽  
Vol 10 (7) ◽  
pp. 1543-1553 ◽  
Author(s):  
Nicolas Chanut ◽  
Sandrine Bourrelly ◽  
Bogdan Kuchta ◽  
Christian Serre ◽  
Jong-San Chang ◽  
...  
Keyword(s):  
Water Vapour ◽  
Flue Gas ◽  
Gas Adsorption ◽  
Metal Organic Frameworks ◽  
Adsorption Performance ◽  
Effect Of Water ◽  
Metal Organic

Vapor-assisted self-conversion of basic carbonates in metal–organic frameworks

Nanoscale ◽  
2021 ◽  
Vol 13 (9) ◽  
pp. 5069-5076
Author(s):  
Miaomiao Jia ◽  
Jingyi Su ◽  
Pengcheng Su ◽  
Wanbin Li
Keyword(s):  
Carbon Capture ◽  
Metal Organic Frameworks ◽  
Solvent Vapor ◽  
Metal Centers ◽  
Metal Organic ◽  
High Alkalinity

Basic carbonates with high alkalinity are incorporated into metal–organic frameworks by solvent vapor-assisted self-conversion of partial metal centers to improve carbon capture performance.

Thermo-Economic Analysis of Microalgae Co-Firing Process for Fossil Fuel-Fired Power Plants

2010 ◽  
Author(s):  
Jian Ma ◽  
Oliver Hemmers
Keyword(s):  
Natural Gas ◽  
Flue Gas ◽  
Power Plants ◽  
Fossil Fuel ◽  
Construction Materials ◽  
Ghg Emissions ◽  
Combustion Efficiency ◽  
Pure Oxygen ◽  
Firing Process ◽  
Microalgal Biomass

A thermoeconomic analysis of microalgae co-firing process for fossil fuel-fired power plants is studied. A process with closed photobioreactor and artificial illumination is evaluated for microalgae cultivation, due to its simplicity with less influence from climate variations. The results from this process would contribute to further estimation of process performance and investment. The concept of co-firing (coal-microalgae or natural gas-microalgae) includes the utilization of CO2 from power plant for microalgal biomass culture and oxy-combustion of using oxygen generated by biomass to enhance the combustion efficiency. As it reduces CO2 emission by recycling it and uses less fossil fuel, there are concomitant benefits of reduced GHG emissions. The by-products (oxygen) of microalgal biomass can be mixed with air or recycled flue gas prior to combustion, which will have the benefits of lower nitrogen oxide concentration in flue gas, higher efficiency of combustion, and not too high temperature (avoided by available construction materials) resulting from coal combustion in pure oxygen. Two case studies show that there are average savings about $0.386 million/MW/yr and $0.323 million/MW/yr for coal-fired and natural gas-fired power plants, respectively. These costs saving are economically attractive and demonstrate the promise of microalgae technology for reducing greenhouse gas (GHG) emission.

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