scholarly journals Adsorption of Methane in Porous Materials as the Basis for the Storage of Natural Gas

Natural Gas ◽  
10.5772/9846 ◽  
2010 ◽  
Author(s):  
Karim Sapag ◽  
Andrea Vallone ◽  
Andrs Garca ◽  
Cecilia Solar
Keyword(s):  
Natural Gas ◽  
Porous Materials ◽  
Adsorption Of Methane

Storage and Transportation of Natural Gas at Moderate Pressures using Adsorption in Porous Materials

2011 ◽  
Author(s):  
Celio L. Cavalcante ◽  
Rafael B. Rios ◽  
A. Euricio B. Torres ◽  
Diana C.S. Azevedo
Keyword(s):  
Natural Gas ◽  
Porous Materials

scholarly journals A Universal Porous Adsorbent for the Selective Capture of Carbon Dioxide

2019 ◽  
Author(s):  
Omid Taheri Qazvini ◽  
Shane G. Telfer
Keyword(s):  
Carbon Dioxide ◽  
Natural Gas ◽  
Porous Materials ◽  
Noncovalent Interactions ◽  
Metal Organic Framework ◽  
Time Lags ◽  
Guest Molecules ◽  
Energy Penalty ◽  
Carbon Dioxide Co2 ◽  
Short Time

<div>Efficient and sustainable methods for carbon dioxide (CO2) capture are essential. Its atmospheric</div><div>concentration must be reduced to meet climate change targets, and its remediation from chemical</div><div>feedstocks and natural gas is vital. While mature technologies involving chemical reactions that trap the</div><div>CO2 do exist, they have many drawbacks. Porous materials with void spaces that are complementary in</div><div>size and electrostatic potential to CO2 offer an alternative. In these materials, the molecular CO2 guests</div><div>are trapped by noncovalent interactions, hence they can be recycled by releasing the CO2 with a low</div><div>energy penalty. Porous materials that are selective towards CO2 when it is present with an array of</div><div>competing gases are challenging to produce. Here, we show how a metal-organic framework, termed</div><div>MUF-16 (MUF = Massey University Framework), is a ‘universal’ adsorbent for CO2 that sequesters</div><div>CO2 from a broad palette of gas streams with record selectivities over competing gases. The position of</div><div>the CO2 molecules captured in the framework pores was determined crystallographically to illustrate</div><div>how complementary noncovalent interactions envelop the guest molecules. The pore environment has a</div><div>low affinity for all other gases, which underpins the benchmark selectivity of MUF-16 for CO2 over</div><div>methane, hydrogen and acetylene. Breakthrough gas separations under dynamic conditions benefit from</div><div>short time lags in the elution of the weakly-adsorbed component to deliver a repertoire of high-purity</div><div>products. MUF-16 is an inexpensive, robust, easily regernarable and recyclable adsorbent that is</div><div>universally applicable to the removal of CO2 from sources such as natural gas, syngas and chemical</div><div>feedstocks.</div>

scholarly journals Accumulation of Natural Gas with a Prospective Material Based on Graphene Aerogel

2021 ◽  
Vol 27 (4) ◽  
pp. 636-646
Author(s):  
A. E. Memetova ◽  
E. A. Neskoromnaya ◽  
A. D. Zelenin ◽  
A. V. Babkin ◽  
N. R. Memetov ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Natural Gas ◽  
Reduced Graphene Oxide ◽  
Porous Carbon ◽  
Isopropyl Alcohol ◽  
Graphene Aerogel ◽  
Reduced Graphene ◽  
Alcohol Medium ◽  
Effective Use ◽  
Adsorption Of Methane

The assessment of the possibility of effective use of graphene aerogels for the adsorption storage and transportation of methane is given. For the study, an aerogel based on reduced graphene oxide was synthesized using supercritical methods for processing a hydrogel in an isopropyl alcohol medium. A narrow distribution of micropores with a maximum at 0.8 nm, a narrow distribution of mesopores with a maximum at about 4.5 and 6.5 nm were revealed. The obtained graphene aerogel (GA) was used to study the adsorption of methane at pressures up to 10 MPa and temperatures of 298, 303, 313 K. The maximum gravimetric absorption of methane reaches 0.86 g/g (37 cm3 (STP)/cm3) and 2.6 g/g (109 m3 (STP)/m3) at corresponding pressures of 35 and 100 bar and a temperature of 298 K, which is the highest recorded value for porous carbon previously reported.

Storage and Transportation of Natural Gas at Moderate Pressures using Adsorption in Porous Materials

2011 ◽  
Author(s):  
Celio L. Cavalcante ◽  
Rafael B. Rios ◽  
A. Euricio B. Torres ◽  
Diana C.S. Azevedo
Keyword(s):  
Natural Gas ◽  
Porous Materials

scholarly journals The effect of chemical treatment on adsorption of natural gas by multi-walled carbon nanotubes: Sorption equilibria and thermodynamic studies

2012 ◽  
Vol 18 (2) ◽  
pp. 193-207 ◽  
Author(s):  
M. Delavar ◽  
A.A. Ghoreyshi ◽  
M. Jahanshahi ◽  
S. Khalili ◽  
N. Nabian
Keyword(s):  
Experimental Data ◽  
Carbon Nanotubes ◽  
Natural Gas ◽  
Adsorption Capacity ◽  
Chemical Treatment ◽  
Gas Adsorption ◽  
Pristine Mwcnts ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes ◽  
Adsorption Of Methane

In this study, adsorption of methane as the main constituent of natural gas was firstly studied on the pristine multi-walled carbon nanotubes (MWCNTs) and then purification and chemical treatments of MWCNTs was performed to enhance the natural gas adsorption capacity. MWCNTs were chemically treated using different methods in this research. The results revealed that chemical treatment of the MWCNTs in presence of H2SO4/HNO3 acidic mixture in 3:1 volume ratio, enhanced considerably natural gas adsorption capacity (an optimal up to 45 mmol/g) at temperature of 298.15 K and the pressure of 50 bar compared to the pristine MWCNTs (about 27 mmol/g) at the same operating conditions. This effect can be attributed to the opening of the nanotubes caps with a major alteration in its structural properties due to chemical treatment. The experimental data of adsorption were almost equally well described by Langmuir, Freundlich and Sips equations to determine the model isotherms. The best fit was obtained by the Sips model isotherm with the r-squared value near to unity. Furthermore, using the experimental data obtained in different temperatures the isosteric heat of natural gas adsorption onto pristine MWCNTs was also calculated in the interested range of pressures and temperatures using the thermodynamic-based Clausius-Clapeyron equation from the Sips isotherm model. The results revealed an energetically heterogeneous surface of MWCNTs in natural gas adsorption. Also the natural gas adsorption process was kinetically studied through pseudo-second order and intra-particle diffusion models which indicated the intra-particular diffusion is rate limiting step in adsorption of methane on MWCNTs.

Porous materials from cellulose nanocrystal and mxene surfactants at the oil/water interface

2020 ◽  
Author(s):  
Bingqing qian ◽  
Haiqiao Wang ◽  
Dong Wang ◽  
Hao-Bin Zhang ◽  
Jessica Wu ◽  
...  
Keyword(s):  
Porous Materials ◽  
Cellulose Nanocrystal ◽  
Water Interface ◽  
Oil Water
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