Separation of CO 2 /N 2 on binderless 5A zeolite

Mendes, Patrícia A. P.; Ribeiro, Ana M.; Gleichmann, Kristin; Ferreira, Alexandre F. P.; Rodrigues, Alı́rio E.

doi:10.1016/j.jcou.2017.05.003

Cited by 72 publications

(33 citation statements)

References 59 publications

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“…In this regards, porous materials with high porosity, chemical and thermal stability are promising solid adsorbents for capturing CO 2 [11,12]. Among various kinds of porous materials, such as zeolites [13,14], porous polymers [15], metal-organic framework [16,17] and activated carbons [18], porous BN has become one of the new classes of CO 2 adsorbents. Due to intrinsic properties of boron nitride such as high thermal and oxidation stability, large surface area, and polarity, porous boron nitride is a desired alternative for CO 2 capture [19,20].…”

Section: Introductionmentioning

confidence: 99%

Metal-Free Modified Boron Nitride for Enhanced CO2 Capture

Hojatisaeidi

Mureddu²,

Dessì³

et al. 2020

Energies

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Porous boron nitride is a new class of solid adsorbent with applications in CO2 capture. In order to further enhance the adsorption capacities of materials, new strategies such as porosity tuning, element doping and surface modification have been taken into account. In this work, metal-free modification of porous boron nitride (BN) has been prepared by a structure directing agent via simple heat treatment under N2 flow. We have demonstrated that textural properties of BN play a pivotal role in CO2 adsorption behavior. Therefore, addition of a triblock copolymer surfactant (P123) has been adopted to improve the pore ordering and textural properties of porous BN and its influence on the morphological and structural properties of pristine BN has been characterized. The obtained BN-P123 exhibits a high surface area of 476 m2/g, a large pore volume of 0.83 cm3/g with an abundance of micropores. More importantly, after modification with P123 copolymer, the capacity of pure CO2 on porous BN has improved by about 34.5% compared to pristine BN (2.69 mmol/g for BN-P123 vs. 2.00 mmol/g for pristine BN under ambient condition). The unique characteristics of boron nitride opens up new routes for designing porous BN, which could be employed for optimizing CO2 adsorption.

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Section: Introductionmentioning

confidence: 99%

Metal-Free Modified Boron Nitride for Enhanced CO2 Capture

Hojatisaeidi

Mureddu²,

Dessì³

et al. 2020

Energies

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“…Previous research on the specific heat consumption of different adsorption methods. [ 38,43,44,56–68 ] …”

Section: Introductionmentioning

confidence: 99%

The Thermodynamics‐Based Benchmarking Analysis on Energy‐Efficiency Performance of CO₂ Capture Technology: Temperature Swing Adsorption as Case Study

et al. 2020

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Climate issues, especially linked to the greenhouse effect and global warming, are receiving increasing attention. The most direct cause is the overproduction of anthropogenic carbon dioxide. Carbon capture and storage (CCS) is one of the main strategies for mitigating and controlling CO 2 emissions from large emission sources, as well as achieving large-scale CO 2 emission reductions. [1] In October 2018, the Intergovernmental Panel on Climate Change (IPCC) released the 1.5 C Special Report in Incheon, which found that global CO 2 emissions would need to fall by %45% from 2010 levels by 2030, and that the world should aim to be carbon neutral by %2050 by removing CO 2 from the air to stabilize remaining emissions. [2] In June 2019, China released The Third Information Bulletin and The Second Biennial Update, which highlighted CO 2 as the main greenhouse gas emitted by China. However, compared with 2005, China's energy-related CO 2 emissions per unit of GDP decreased by 40.7% in 2016. Nevertheless, the rapid and widespread reduction in carbon emissions is required from all sectors to limit the global temperature rise to 1.5 C or even 2 C. [3] The desire for a shared future for mankind has prompted China to establish increasingly severe emission-control scenarios that call for accelerated development of practical carbon capture technology. [4] However, a lack of generalized methods and reasonable benchmarking analysis of the energy efficiency of typical carbon capture technologies may lead to low reliability, poor generalization, and even contrasting research conclusions regarding their energy efficiency and energy consumption. Thus, an adequate benchmarking analysis framework is urgently required for carbon capture technology. CCS is widely regarded as a new solution to the common challenges currently faced by human society. [5] However, in recent years, CCS research has been inhibited by the "old" problem of excess specific-heat consumption. Thus, it is difficult to promote technological development with sustainable cost control. Moreover, according to the first law of thermodynamics, current carbon capture technology typically requires heat consumption of 3-4 GJ to capture 1 ton of CO 2. [6] Furthermore, its theoretical exergy efficiency is generally below 20% and it exhibits low technology maturity, despite substantial potential for energy conservation and consumption reduction. [7] For post-combustion CO 2 capture, the feasibility of several technologies (such as absorption, adsorption, membrane, and cryogenic methods) has previously been demonstrated. [8] Adsorption is considered to be a

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“…Among existing technologies, adsorption is indicated as one of the most propitious methods in practical applications due to low cost and simplicity of use in a relatively wide range of temperatures . Various solid adsorbents like zeolites, silica gel, activated carbon (AC), activated carbon fibers (ACF S ), activated alumina, metal organic frameworks (MOF S ), carbon nanotubes (CNT), graphenes, porous silica, porous polymers, and metal oxide carbonate materials have been used for adsorption of CO 2 . To enhance their fundamental capabilities and improve some of the features of these materials, modified adsorbents have been created by adding different amine types and metal oxides on the surface of solid adsorbents .…”

Section: Introductionmentioning

confidence: 99%

“…Original Research Article: Piperazine-modified activated alumina as a novel promising candidate for CO 2 capture been used for adsorption of CO 2 . [5][6][7][8][9][10][11][12][13][14] To enhance their fundamental capabilities and improve some of the features of these materials, modified adsorbents have been created by adding different amine types and metal oxides on the surface of solid adsorbents. [15][16][17][18] Modified adsorbents are very capable of increasing the adsorption capacity and selectivity of CO 2 and decreasing energy consumption of regeneration.…”

Section: Introductionmentioning

confidence: 99%

Piperazine‐modified activated alumina as a novel promising candidate for CO₂ capture: experimental and modeling

2018

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In this research, the CO2 adsorption process was studied using modified activated alumina with a piperazine solution as a novel sorbent. Activated alumina was modified with a piperazine solution concentration in the range of 1–4 wt%. Adsorption experiments were performed to evaluate the operating parameters, including CO2 pressure in the range of 2–8 bar, adsorbent dosage in the range of 0.5–2 g, temperature in the range of 25–85°C and adsorbent mesh in the range of 200–800 micron. Maximum adsorption capacity (222.01 mg CO2/g modified activated alumina) was determined at a temperature of 25°C, pressure of 8 bar, and adsorbent dosage of 0.5 g, with a piperazine solution of 2 wt%. The results of the experiments showed that the rate of CO2 adsorption increases with increasing pressure and decreasing temperature. The Freundlich isotherm model with correlation coefficient of 0.999 was found to be the best for fitting the CO2 adsorption isotherm data. The kinetic study also indicated that the Elovich model fits the experimental kinetic data well. The negative values of Gibbs free energy change (ΔG°) and enthalpy change (ΔH°) show that the reaction is spontaneous in nature and exothermic. The negative value of entropy change (ΔS°) shows a reduction in the irregularity of the adsorption process. © 2018 Society of Chemical Industry and John Wiley & Sons, Ltd.

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Separation of CO 2 /N 2 on binderless 5A zeolite

Cited by 72 publications

References 59 publications

Metal-Free Modified Boron Nitride for Enhanced CO2 Capture

Metal-Free Modified Boron Nitride for Enhanced CO2 Capture

The Thermodynamics‐Based Benchmarking Analysis on Energy‐Efficiency Performance of CO₂ Capture Technology: Temperature Swing Adsorption as Case Study

Piperazine‐modified activated alumina as a novel promising candidate for CO₂ capture: experimental and modeling

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Separation of CO 2 /N 2 on binderless 5A zeolite

Cited by 72 publications

References 59 publications

Metal-Free Modified Boron Nitride for Enhanced CO2 Capture

Metal-Free Modified Boron Nitride for Enhanced CO2 Capture

The Thermodynamics‐Based Benchmarking Analysis on Energy‐Efficiency Performance of CO2 Capture Technology: Temperature Swing Adsorption as Case Study

Piperazine‐modified activated alumina as a novel promising candidate for CO2 capture: experimental and modeling

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The Thermodynamics‐Based Benchmarking Analysis on Energy‐Efficiency Performance of CO₂ Capture Technology: Temperature Swing Adsorption as Case Study

Piperazine‐modified activated alumina as a novel promising candidate for CO₂ capture: experimental and modeling