Development of T type zeolite for separation of CO2 from CH4 in adsorption processes

Rad, Mina Doroudian; Fatemi, Shohreh; Mirfendereski, Seyed Mojtaba

doi:10.1016/j.cherd.2012.01.010

Cited by 49 publications

(45 citation statements)

References 19 publications

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“…It is generally accepted that the utilization of biogas will help to minimize the amount of CH 4 released to the atmosphere. However prior to use, the carbon dioxide content of the biogas must be reduced in order to increase the heating value of the methane and to avoid pipeline and equipment corrosion in the presence of water [3][4][5]. The separation of carbon dioxide to upgrade methane is of critical economic importance and is still a subject of intensive research [6,7].…”

Section: Introductionmentioning

confidence: 99%

Adsorption performance indicators for the CO2/CH4 separation: Application to biomass-based activated carbons

Álvarez-Gutiérrez

Gil

Rubiera

et al. 2016

Fuel Processing Technology

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A deep understanding of the interaction and competition between different gases on adsorption processes is essential for the design and optimization of industrial units. Two biomass-derived activated carbons (CS-CO 2 and CS-H 2 O), synthesized in our laboratory, were evaluated as selective adsorbents for the separation of CO 2 from CO 2 /CH 4 mixtures. Adsorption isotherms of the pure gases (i.e., CO 2 and CH 4 ) were performed in a high-pressure magnetic suspension balance at three different temperatures (303, 323 and 343 K) up to 1000 kPa and the data were correlated using the Sips and Toth models. The Ideal Adsorbed Solution Theory (IAST) was applied to predict the binary adsorption equilibrium.The results were validated by means of experimental breakthrough tests in a fixedbed set-up. The isosteric heats of adsorption were estimated from the pure component adsorption data by means of the Clausius-Clapeyron equation and the Sips and Toth equations. All of the equilibrium data were integrated in a performance indicator defined so as to be able to evaluate the adsorbent in terms of selectivity, working capacity and adsorption enthalpy under conditions relevant to the specific application. Although both CS activated carbons had similar textural features, CS-CO 2 showed a better overall performance than CS-H 2 O for the 1 separation of CO 2 from CO 2 /CH 4 mixtures. Our results highlight the importance of carrying out a deep analysis of the adsorption equilibrium under conditions relevant to the foreseen application in order to identify the most suitable adsorbent.

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Section: Introductionmentioning

confidence: 99%

Adsorption performance indicators for the CO2/CH4 separation: Application to biomass-based activated carbons

Álvarez-Gutiérrez

Gil

Rubiera

et al. 2016

Fuel Processing Technology

View full text Add to dashboard Cite

show abstract

“…Therefore, they are commercially important and widely used in applications such as separation, purification, ion exchange and catalysis [2][3][4]. For example, the removal of CO 2 from natural gas streams can be carried out using the different kinds of zeolites adsorbents (i.e., type T zeolites, type X zeolites, type A zeolites) [5][6][7][8]. Although the different kinds of zeolites adsorbents are used, the satisfied results are all obtained.…”

Section: Introductionmentioning

confidence: 99%

Adsorption characteristics analysis of CO2 and N2 in 13X zeolites by molecular simulation and N2 adsorption experiment

Chen

Huang

et al. 2016

J Porous Mater

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The adsorption characteristics of CO 2 and N 2 in 13X zeolites have been studied by the molecular simulation and N 2 adsorption experiment. It is found that the simulation results by Dreiding force fields are in an agreement with the published data. The influence of the r and e parameters of O Z and Na ? on the adsorption performance is discussed. Then the optimized force field parameters are obtained. Specific surface area (S B ) is calculated by simulation and experiment. Its relative error is just only 4.3 %. Therefore, it is feasible that S B of 13X zeolites is obtained by the simulation methods. Finally, the impacts of pressure and temperature on adsorption characteristics are investigated. At low pressure, CO 2 adsorption in 13X zeolites belongs to the surface adsorption. As the pressure increase, the partial multilayer adsorption appears along with the surface adsorption. N 2 adsorption in 13X zeolites is different from that of CO 2 . At low temperature of 77 K, two primary peaks are caused by the surface adsorption and multilayer adsorption respectively regardless of pressure variation. When the temperature is 273 K, the energy distribution curve appears undulate at low pressures. Then it becomes stable with the pressure increase. The surface adsorption plays an important role at the relative high pressures. The results will help to provide the theory guide for the optimization of force field parameters of adsorbents, and it is very important significance to understand the adsorption performance of zeolites.

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“…Over the years, many researchers have studied pure and binary adsorption of carbon dioxide and methane on different commercial adsorbents, such as zeolite 13X [6], activated carbon [7], carbon molecular sieve [8], ZSM-5 [9], and synthesized adsorbents such as zeolite T [10] and zeolite β [2].…”

Section: Introductionmentioning

confidence: 99%

Gas adsorption separation of CO2/CH4 system using zeolite 5A

Mofarahi

Gholipour

2014

Microporous and Mesoporous Materials

159

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Development of T type zeolite for separation of CO2 from CH4 in adsorption processes

Cited by 49 publications

References 19 publications

Adsorption performance indicators for the CO2/CH4 separation: Application to biomass-based activated carbons

Adsorption performance indicators for the CO2/CH4 separation: Application to biomass-based activated carbons

Adsorption characteristics analysis of CO2 and N2 in 13X zeolites by molecular simulation and N2 adsorption experiment

Gas adsorption separation of CO2/CH4 system using zeolite 5A

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