Biomass Valorization to Produce Porous Carbons: Applications in CO2 Capture and Biogas Upgrading to Biomethane—A Mini-Review

Porous carbon materials, derived from biomass wastes and/or as by-products, are considered versatile, economical and environmentally sustainable. Recently, their high adsorption capacity has led to an increased interest in several environmental applications related to separation/purification both in liquid- and gas-phases. Specifically, their use in carbon dioxide (CO2) capture/sequestration has been a hot topic in the framework of gas adsorption applications. Cost effective biomass porous carbons with enhanced textural properties and high CO2 uptakes present themselves as attractive alternative adsorbents with potential to be used in CO2 capture/separation, apart from zeolites, commercial activated carbons and metal-organic frameworks (MOFs). The renewable and sustainable character of the precursor of these bioadsorbents must be highlighted in the context of a circular-economy and emergent renewable energy market to reach the EU climate and energy goals. This mini-review summarizes the current understandings and discussions about the development of porous carbons derived from bio-wastes, focusing their application to capture CO2 and upgrade biogas to biomethane by adsorption-based processes. Biogas is composed by 55–65 v/v% of methane (CH4) mainly in 35–45 v/v% of CO2. The biogas upgraded to bio-CH4 (97%v/v) through an adsorption process yields after proper conditioning to high quality biomethane and replaces natural gas of fossil source. The circular-economy impact of bio-CH4 production is further enhanced by the use of biomass-derived porous carbons employed in the production process.

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Influence of doping nitrogen, sulfur, and phosphorus on activated carbons for gas adsorption of H2, CH4 and CO2

RSC Advances ◽

10.1039/c6ra06620h ◽

2016 ◽

Vol 6 (55) ◽

pp. 50138-50143 ◽

Cited By ~ 18

Author(s):

D. Li ◽

W. B. Li ◽

J. S. Shi ◽

F. W. Xin

Keyword(s):

Adsorption Capacity ◽

Gas Adsorption ◽

Activated Carbons ◽

Porous Carbons

Heteroatoms doped porous carbons were synthesized with different acids as catalysts and heteroatoms source. Heteroatoms doping enhances gas adsorption capacity.

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CO2 and CH4 Adsorption Behavior of Biomass-Based Activated Carbons

Energies ◽

10.3390/en11113136 ◽

2018 ◽

Vol 11 (11) ◽

pp. 3136 ◽

Cited By ~ 4

Author(s):

Deneb Peredo-Mancilla ◽

Imen Ghouma ◽

Cecile Hort ◽

Camelia Matei Ghimbeu ◽

Mejdi Jeguirim ◽

...

Keyword(s):

Carbon Dioxide ◽

Activated Carbon ◽

Adsorption Capacity ◽

Gas Adsorption ◽

Activated Carbons ◽

Chemical Activation ◽

Textural Properties ◽

Micropore Volume ◽

Activation Method ◽

Physical Activation

The aim of the present work is to study the effect of different activation methods for the production of a biomass-based activated carbon on the CO 2 and CH 4 adsorption. The influence of the activation method on the adsorption uptake was studied using three activated carbons obtained by different activation methods (H 3 PO 4 chemical activation and H 2 O and CO 2 physical activation) of olive stones. Methane and carbon dioxide pure gas adsorption experiments were carried out at two working temperatures (303.15 and 323.15 K). The influence of the activation method on the adsorption uptake was studied in terms of both textural properties and surface chemistry. For the three adsorbents, the CO 2 adsorption was more important than that of CH 4 . The chemically-activated carbon presented a higher specific surface area and micropore volume, which led to a higher adsorption capacity of both CO 2 and CH 4 . For methane adsorption, the presence of mesopores facilitated the diffusion of the gas molecules into the micropores. In the case of carbon dioxide adsorption, the presence of more oxygen groups on the water vapor-activated carbon enhanced its adsorption capacity.

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Metal–Organic Framework for Selective Gas Scavenging

Journal of Molecular and Engineering Materials ◽

10.1142/s2251237316400141 ◽

2016 ◽

Vol 04 (04) ◽

pp. 1640014

Author(s):

Jiating He ◽

Xu Li

Keyword(s):

Gas Adsorption ◽

Technology Development ◽

Metal Organic Framework ◽

Cost Effective ◽

Future Perspectives ◽

Practical Application ◽

Separation Of Gases ◽

Hazardous Gases ◽

Metal Organic ◽

Gas Scavenging

Selective gas adsorption plays an important role in adsorptive separation of gases and scavenging unfavorable or hazardous gases. The use of cost-effective and environmentally friendly materials for selective gas adsorption has become one of the most pressing needs today. The development of new adsorbents is essential but difficult due to the selectivity and efficiency requirements for practical application. As potential scavengers, metal–organic frameworks (MOFs) have drawn great attention. In this review, the current progress of science and technology development of MOFs on selective gas scavenging will be highlighted. Future perspectives for exploring MOFs for practical application will also be put forward.

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General and Predictable Synthesis of Ultrahigh-Surface-Area Porous Carbons with Superior Yield via Preferential Removal of sp2-Hybridized Atoms

10.21203/rs.3.rs-89679/v1 ◽

2020 ◽

Author(s):

Peifeng Yu ◽

Weicai Zhang ◽

Yingliang Liu ◽

Fei Xu ◽

Yeru Liang

Keyword(s):

Surface Area ◽

Gas Adsorption ◽

Structural Information ◽

Cost Effective ◽

Grand Challenge ◽

Carbonaceous Matter ◽

Porous Carbons ◽

Surface Areas ◽

Synthesis Strategy ◽

Directed Synthesis

Abstract A grand challenge in the state-of-the-art porous carbons is the lack of reliable synthesis strategy for achieving ultrahigh surface areas while maintaining a high carbonization yield. Ultrahigh surface area generally depends on trial and error activation with poor understanding of structural information in the starting carbonaceous matter to predict the ultrahigh porosity. Meanwhile, excessive development of porosity (> 3500 m2 g− 1) will undoubtedly give rise to low carbonization yield (< 10%), thus far restricting cost-effective applications. Here, we report a general and predictable protocol via constructing nitrogen-doped sp2-hybridized carbon atoms in the carbonaceous matter, which guides the pore-creating agents (e.g., KOH) to preferentially etch over sp2- rather than sp3-hybridized atoms, thus greatly increasing the activation reaction efficiency to simultaneously accomplish ultrahigh porosity without sacrificing carbonization yield, a critical paradox in producing carbons. A highest surface area (4482 m2 g− 1) with 10 wt.% carbonization yield and 3500 m2 g− 1 with an unparalleled yield of 35% are achieved so far, which enables great potential in adsorptive-related applications as exemplified by their record-high gas adsorption and supercapacitve performances. Our findings reveal important insights on directed synthesis of ultrahigh-surface-area carbons and provide an impetus for their on-demand applications.

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Improving textural properties of magnesium-based metal-organic framework for gas adsorption by carbon doping

Microporous and Mesoporous Materials ◽

10.1016/j.micromeso.2021.111246 ◽

2021 ◽

pp. 111246

Author(s):

Khaliesah Kamal ◽

Denys I. Grekov ◽

Azmi Mohd Shariff ◽

Mohamad Azmi Bustam ◽

Pascaline Pré

Keyword(s):

Gas Adsorption ◽

Metal Organic Framework ◽

Textural Properties ◽

Carbon Doping ◽

Metal Organic ◽

Organic Framework

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CO2 and CH4 Adsorption Behavior of Biomass Based Activated Carbons

10.20944/preprints201807.0489.v1 ◽

2018 ◽

Author(s):

Deneb Peredo-Mancilla ◽

Imen Ghouma ◽

Cecile Hort ◽

Camelia Matei Ghimbeu ◽

Mejdi Jeguirim ◽

...

Keyword(s):

Gas Adsorption ◽

Activated Carbons ◽

Chemical Activation ◽

Textural Properties ◽

Micropore Volume ◽

Adsorption Behavior ◽

Bet Surface Area ◽

Ch4 Adsorption ◽

Oxygen Groups ◽

Physical And Chemical

The aim of the present study is to provide new insights into the CO2 and CH4 adsorption using a set of biomass-based activated carbons obtained by physical and chemical activation of olive-stones. The adsorption behavior is analyzed by means of pure gas adsorption isotherms up to 3.2 MPa at two temperatures (303.15 and 323.15 K).The influence of the activation method on the adsorption uptake is studied in terms of both textural properties and surface chemistry. For three activated carbons the CO2 adsorption was more important than that of CH4. The chemically activation resulted in higher BET surface area and micropore volume that lead to higher adsorption for both CO2 and CH4. For methane the presence of mesopores seems to facilitate the access of the gas molecules into the micropores while for carbon dioxide, the presence of oxygen groups enhanced the adsorption capacity.

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Sustainable Porous Materials for Gas Adsorption Applications; A Concise Review

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.795.96 ◽

2013 ◽

Vol 795 ◽

pp. 96-101 ◽

Cited By ~ 1

Author(s):

Hoong Chan Wai ◽

Mohd Noor Mazlee ◽

Zainal Arifin Ahmad ◽

Shamsul Baharin Jamaludin ◽

Mohd Azlan Mohd Ishak ◽

...

Keyword(s):

Porous Materials ◽

Flue Gas ◽

Gas Adsorption ◽

Low Cost ◽

Metal Organic Framework ◽

Cost Effective ◽

Adsorption Properties ◽

Concise Review ◽

Metal Organic ◽

Clay Materials

Many new sustainable porous materials were developed for gas adsorption applications. Common materials such as activated carbon, clay materials and metal organic framework (MOF) that utilized as potential porous adsorption materials were studied. The article was also discussed on the fabrication methods of porous materials. Adsorptions of flue gas using porous materials were reviewed. It was found that the adsorption properties of porous materials were highly dependent on surface area, selectivity and impregnation. Low cost porous adsorbents such as clay and fly ash were also reviewed as potential and cost effective materials to be used in industries.

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Message Passing Neural Networks for Partial Charge Assignment to Metal-Organic Frameworks

10.26434/chemrxiv.12298487 ◽

2020 ◽

Author(s):

Ali Raza ◽

Arni Sturluson ◽

Cory Simon ◽

Xiaoli Fern

Keyword(s):

Electronic Structure ◽

Message Passing ◽

Gas Adsorption ◽

Metal Organic Frameworks ◽

Computational Cost ◽

Electronic Structure Calculations ◽

High Fidelity ◽

Partial Charges ◽

Metal Organic ◽

Structure Calculations

Virtual screenings can accelerate and reduce the cost of discovering metal-organic frameworks (MOFs) for their applications in gas storage, separation, and sensing. In molecular simulations of gas adsorption/diffusion in MOFs, the adsorbate-MOF electrostatic interaction is typically modeled by placing partial point charges on the atoms of the MOF. For the virtual screening of large libraries of MOFs, it is critical to develop computationally inexpensive methods to assign atomic partial charges to MOFs that accurately reproduce the electrostatic potential in their pores. Herein, we design and train a message passing neural network (MPNN) to predict the atomic partial charges on MOFs under a charge neutral constraint. A set of ca. 2,250 MOFs labeled with high-fidelity partial charges, derived from periodic electronic structure calculations, serves as training examples. In an end-to-end manner, from charge-labeled crystal graphs representing MOFs, our MPNN machine-learns features of the local bonding environments of the atoms and learns to predict partial atomic charges from these features. Our trained MPNN assigns high-fidelity partial point charges to MOFs with orders of magnitude lower computational cost than electronic structure calculations. To enhance the accuracy of virtual screenings of large libraries of MOFs for their adsorption-based applications, we make our trained MPNN model and MPNN-charge-assigned computation-ready, experimental MOF structures publicly available.

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A Series of Metal-Organic Frameworks for Selective CO2 Capture and Catalytic Oxidative Carboxylation of Olefins

10.26434/chemrxiv.7068509 ◽

2018 ◽

Author(s):

Huong T. D. Nguyen ◽

Y B. N. Tran ◽

Hung N. Nguyen ◽

Tranh C. Nguyen ◽

Felipe Gándara ◽

...

Keyword(s):

Room Temperature ◽

Gas Adsorption ◽

New Materials ◽

One Pot ◽

Acid Gas ◽

Naphthalene Diimide ◽

Styrene Carbonate ◽

Metal Organic ◽

Adsorption Of Co ◽

The One

Three novel lanthanide metal˗organic frameworks (Ln-MOFs), namely MOF-590, -591, and -592 were constructed from a naphthalene diimide tetracarboxylic acid. Gas adsorption measurements of MOF-591 and -592 revealed good adsorption of CO2 (low pressure, at room temperature) and moderate CO2 selectivity over N2 and CH4. Accordingly, breakthrough measurements were performed on a representative MOF-592, in which the separation of CO2 from binary mixture containing N2 and CO2 was demonstrated without any loss in performance over three consecutive cycles. Moreover, MOF-590, MOF-591, and MOF-592 exhibited catalytic activity in the one-pot synthesis of styrene carbonate from styrene and CO2 under mild conditions (1 atm CO2, 80 °C, and solvent-free). Among the new materials, MOF-590 revealed a remarkable efficiency with exceptional conversion (96%), selectivity (95%), and yield (91%).

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Influence of Metal Substitution on the Pressure-Induced Phase Change in Flexible Zeolitic Imidazolate Frameworks

10.26434/chemrxiv.7108706.v1 ◽

2018 ◽

Author(s):

C. Michael McGuirk ◽

Tomče Runčevski ◽

Julia Oktawiec ◽

Ari Turkiewicz ◽

mercedes K. taylor ◽

...

Keyword(s):

Phase Change ◽

Single Crystal ◽

Gas Adsorption ◽

High Capacity ◽

Phase Changes ◽

Zeolitic Imidazolate Frameworks ◽

Metal Substitution ◽

Heat Management ◽

Metal Organic ◽

First Time

Metal–organic frameworks that display step-shaped adsorption profiles arising from discrete pressure-induced phase changes are promising materials for applications in both high-capacity gas storage and energy-efficient gas separations. The thorough investigation of such materials through chemical diversification, gas adsorption measurements, and in situ structural characterization is therefore crucial for broadening their utility. We examine a series of isoreticular, flexible zeolitic imidazolate frameworks (ZIFs) of the type M(bim)2 (SOD; M = Zn (ZIF-7), Co (ZIF-9), Cd (CdIF-13); bim– = benzimidazolate), and elucidate the effects of metal substitution on the pressure-responsive phase changes and the resulting CO2 and CH4 step positions, pre-step uptakes, and step capacities. Using ZIF-7 as a benchmark, we reexamine the poorly understood structural transition responsible for its adsorption steps and, through high-pressure adsorption measurements, verify that it displays a step in its CH4 adsorption isotherms. The ZIF-9 material is shown to undergo an analogous phase change, yielding adsorption steps for CO2 and CH4 with similar profiles and capacities to ZIF-7, but with shifted threshold pressures. Further, the Cd2+ analogue CdIF-13 is reported here for the first time, and shown to display adsorption behavior distinct from both ZIF-7 and ZIF-9, with negligible pre-step adsorption, a ~50% increase in CO2 and CH4 capacity, and dramatically higher threshold adsorption pressures. Remarkably, a single-crystal-to-single-crystal phase change to a pore-gated phase is also achieved with CdIF-13, providing insight into the phase change that yields step-shaped adsorption in these flexible ZIFs. Finally, we show that the endothermic phase change of these frameworks provides intrinsic heat management during gas adsorption.

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