Clearing the Air

Smith, Hugh; Fahrenkamp-Uppenbrink, Julia; Coontz, Robert

doi:10.1126/science.325_1641

Cited by 23 publications

(8 citation statements)

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“…If there are isotherm inflections, the dual-site Langmuir model will be used to fit the isotherm data (6) Then the isosteric heat of adsorption, Q st , can be calculated using ( ) (Eq. 7)…”

Section: Enthalpy Of Adsorptionmentioning

confidence: 99%

“…[4] Carbon capture and storage (CCS) [5] is a family of technologies that can reduce CO 2 emissions. [6,7] CCS includes three steps: a) separation of CO 2 from emission sources before entering the atmosphere (carbon capture); b) transportation to a storage site; and c) permanent subterranean or submarine storage. In the latter two steps, captured CO 2 is pressurized to ≈100 bar or more and transported to a storage site, where it is injected and trapped underground for hundreds to thousands of years.…”

Section: Introductionmentioning

confidence: 99%

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Porous Organic Polymers for Post‐Combustion Carbon Capture

et al. 2017

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One of the most pressing environmental concerns of our age is the escalating level of atmospheric CO . Intensive efforts have been made to investigate advanced porous materials, especially porous organic polymers (POPs), as one type of the most promising candidates for carbon capture due to their extremely high porosity, structural diversity, and physicochemical stability. This review provides a critical and in-depth analysis of recent POP research as it pertains to carbon capture. The definitions and terminologies commonly used to evaluate the performance of POPs for carbon capture, including CO capacity, enthalpy, selectivity, and regeneration strategies, are summarized. A detailed correlation study between the structural and chemical features of POPs and their adsorption capacities is discussed, mainly focusing on the physical interactions and chemical reactions. Finally, a concise outlook for utilizing POPs for carbon capture is discussed, noting areas in which further work is needed to develop the next-generation POPs for practical applications.

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“…If there are isotherm inflections, the dual-site Langmuir model will be used to fit the isotherm data (6) Then the isosteric heat of adsorption, Q st , can be calculated using ( ) (Eq. 7)…”

Section: Enthalpy Of Adsorptionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Porous Organic Polymers for Post‐Combustion Carbon Capture

et al. 2017

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“…In the past decade, the catalytic hydrogenation of CO 2 and CO to useful chemicals (e.g., methane and alcohol) has attracted increasing interest for effectively mitigating CO 2 and CO buildup and circularly utilizing the carbon resource. [1][2][3][4] For these hydrogenation reactions, noble metal-based catalysts (e.g., Ru, Rh and Pd) have been widely accepted as the most efficient catalysts because of their high activity, low reaction temperature and product selectivity. [5][6][7][8][9] Although considerable investigations on CO 2 and CO hydrogenation have been carried out based on experimental and theoretical studies, [10][11][12][13][14][15] detailed reaction mechanisms and key intermediates of these processes are still under debate.…”

Section: Introductionmentioning

confidence: 99%

Hydrogenation mechanism of carbon dioxide and carbon monoxide on Ru(0001) surface: a density functional theory study

et al. 2014

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“…The increasing emissions of CO 2 by human activities are causing the obvious greenhouse effect and worldwide climate change. [1][2][3][4] Since the sequestration of CO 2 has a potential risk to the global environment, 5,6 the utilization of CO 2 as an abundant and inexpensive chemical feedstock has received more and more attention. In addition, with the dwindling of fossil fuel reserves, renewable energies, such as solar, wind and hydraulic power, will become more important in the future.…”

Section: Introductionmentioning

confidence: 99%

Nanoparticle modified Ni-based bimodal pore catalysts for enhanced CO₂methanation

et al. 2014

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Nanoparticle promoted Ni-based bimodal pore catalysts (20Ni/SiO 2 -Si, 20Ni/SiO 2 -Al, 20Ni/SiO 2 -Zr) were developed by the impregnation of nickel over SiO 2 , Al 2 O 3 and ZrO 2 nanoparticle modified SiO 2 supports.The effects of nanoparticle type on the structures and performances of the catalysts for CO 2 methanation were systemically studied. Catalyst characterizations indicated that bimodal pore structures were formed by the introduction of nanoparticles into the SiO 2 support, which increased the surface areas of the catalysts and improved the dispersion of nickel. The activity for CO 2 methanation was also enhanced significantly by the promotion of nanoparticles. The CO 2 conversion increased in the order of 20Ni/SiO 2 (unmodified catalyst) < 20Ni/SiO 2 -Si < 20Ni/SiO 2 -Al < 20Ni/SiO 2 -Zr, corresponding to the increasing order of their surface areas. It is found that the modification of ZrO 2 and Al 2 O 3 nanoparticles improved the CO 2 chemisorption and dissociation, and thus resulted in extremely high CH 4 selectivity (about 100%) at low reaction temperatures (<450 C). A strong metal-support/promoter interaction was also observed in ZrO 2 and Al 2 O 3 nanoparticle promoted catalysts, which inhibited the sintering of nickel and contributed to the high stabilities of these two catalysts in CO 2 methanation. Due to their excellent activity, selectivity and stability, ZrO 2 nanoparticle modified Ni-based catalysts exhibited high potential for application in CO 2 methanation in the future.

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Clearing the Air

Cited by 23 publications

References 0 publications

Porous Organic Polymers for Post‐Combustion Carbon Capture

Porous Organic Polymers for Post‐Combustion Carbon Capture

Hydrogenation mechanism of carbon dioxide and carbon monoxide on Ru(0001) surface: a density functional theory study

Nanoparticle modified Ni-based bimodal pore catalysts for enhanced CO₂methanation

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Clearing the Air

Cited by 23 publications

References 0 publications

Porous Organic Polymers for Post‐Combustion Carbon Capture

Porous Organic Polymers for Post‐Combustion Carbon Capture

Hydrogenation mechanism of carbon dioxide and carbon monoxide on Ru(0001) surface: a density functional theory study

Nanoparticle modified Ni-based bimodal pore catalysts for enhanced CO2methanation

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Product

Resources

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Nanoparticle modified Ni-based bimodal pore catalysts for enhanced CO₂methanation