Untitled

Amirkhanov, D. M.; Kotenko, A. A.; Tul'skii, M. N.; Chelyak, M. M.

doi:10.1023/a:1019242000663

Cited by 7 publications

(10 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…3 Recently, H 2 S removal has received more attention, because in certain areas in the US, Canada, Russia, and the Middle East, oil and gas reservoirs were reported to contain H 2 S as well as CO 2 at varying high levels. [4][5][6] Currently, amine absorption dominates acid gas (CO 2 and H 2 S) separation technology to reduce CO 2 and H 2 S to meet the pipeline requirement (<2% CO 2 , <4 ppm H 2 S). Such processes present environmental concerns as well as high capital and maintenance costs of the large absorption units.…”

Section: Introductionmentioning

confidence: 99%

A high-performance hydroxyl-functionalized polymer of intrinsic microporosity for an environmentally attractive membrane-based approach to decontamination of sour natural gas

Pinnau

et al. 2015

J. Mater. Chem. A

View full text Add to dashboard Cite

The acid gases carbon dioxide (CO2) and hydrogen sulfide (H2S) are important and highly undesirable contaminants in natural gas, and membrane-based removal of these contaminants is environmentally attractive. Although removal of CO2 from natural gas using membranes is well established in industry, there is limited research on H2S removal, mainly due to its toxic nature. In actual field operations, wellhead pressures can exceed 50 bar with H2S concentrations up to 20%. Membrane plasticization and competitive mixed-gas sorption, which can both lead to a loss of separation efficiency, are likely to occur under these aggressive feed conditions, and this is almost always accompanied by a significant decrease in membrane selectivity. In this paper, permeation and separation properties of a hydroxyl-functionalized polymer with intrinsic microporosity (PIM-6FDA-OH) are reported for mixed-gas feeds containing CO2, H2S or the combined pair with CH4. The pure-gas permeation results show no H2S-induced plasticization of the PIM-6FDA-OH film in a pure H2S feed at 35 ℃ up to 4.5 bar, and revealed only slight plasticization up to 8 bar of pure H2S. The hydroxyl-functionalized PIM membrane exhibited significant pure-gas CO2 plasticization resistance up to 28 bar feed pressure. Mixed-gas (15%H2S/15%CO2/70%CH4) permeation results showed that the hydroxyl-functionalized PIM membrane maintained excellent separation performance even under exceedingly challenging feed conditions. The CO2 and H2S permeability isotherms indicated minimal CO2-induced plasticization; however, H2S-induced plasticization effects were evident at the highest mixed gas feed pressure of 48 bar. Under this extremely aggressive mixed gas feed, the binary CO2/CH4 and H2S/CH4 permselectivities, and the combined CO2 and H2S acid gas selectivity were 25, 30 and 55, respectively. Our results indicate that OH-functionalized PIMs materials are very promising candidate membrane materials for simultaneous removal of CO2 and H2S from aggressive natural gas feeds, which makes membrane-based gas separation technology an attractive option for clean energy production and reducing greenhouse gas emissions.

show abstract

Section: Introductionmentioning

confidence: 99%

A high-performance hydroxyl-functionalized polymer of intrinsic microporosity for an environmentally attractive membrane-based approach to decontamination of sour natural gas

Pinnau

et al. 2015

J. Mater. Chem. A

View full text Add to dashboard Cite

show abstract

“…Unfortunately, it is necessary to sacrifice permeability for the sake of selectivity or vice versa in this case. Research and development in other areas is actively continuing; much attention is paid to membranes with a nanostructured carbon selective layer, as well as with a mixed matrix membrane, including carbon nanomaterials [68][69][70][71][72][73][74][75][76]. Graphene is of particular interest.…”

Section: Graphene-based Membranes For the Purification And Concentratmentioning

confidence: 99%

Graphene and Graphene-Like Materials for Hydrogen Energy

et al. 2020

View full text Add to dashboard Cite

The review is devoted to current and promising areas of application of graphene and materials based on it for generating environmentally friendly hydrogen energy. Analysis of the results of theoretical and experimental studies of hydrogen accumulation in graphene materials confirms the possibility of creating on their basis systems for reversible hydrogen storage, which combine high capacity, stability, and the possibility of rapid hydrogen evolution under conditions acceptable for practical use. Recent advances in the development of chemically and heat-resistant graphene-based membrane materials make it possible to create new gas separation membranes that provide high permeability and selectivity and are promising for hydrogen purification in processes of its production from natural gas. The characteristics of polymer membranes that are currently used in industry for the most part can be significantly improved with small additions of graphene materials. The use of graphene-like materials as a support of nanoparticles or as functional additives in the composition of the electrocatalytic layer in polymer electrolyte membrane fuel cells makes it possible to improve their characteristics and to increase the activity and stability of the electrocatalyst in the reaction of oxygen evolution.

show abstract

“…In the region near room temperatures one of these phases ('rigid') occurs in a glassy state, while the other ('flexible') is rubberlike. [7] The content of the flexible phase largely determines the efficiency of such membranes, while the rigid block provides an additional stability with respect to swelling and plasticization. The important characteristics of these membranes are the content and type of the rubberlike phase, average molecular mass of the rigid blocks, chemical compositions of the blocks (the presence and content of active functional groups), and their strength properties.…”

Section: Introductionmentioning

confidence: 99%

“…The important characteristics of these membranes are the content and type of the rubberlike phase, average molecular mass of the rigid blocks, chemical compositions of the blocks (the presence and content of active functional groups), and their strength properties. [7] One promising membrane for separation of mixtures of natural gases is the Seragel membrane. [8] In particular, tests involving individual gases (CH 4 , CO 2 , H 2 S, N 2 , SO 2 , etc.)…”

Section: Introductionmentioning

confidence: 99%

Gas permeation properties of Seragel membrane

Saeidi¹,

Moghadam²,

Mahdyarfar³

et al. 2009

Asia-Pacific J Chem Eng

View full text Add to dashboard Cite

Gas permeation behavior through a specific type of polymeric membrane was investigated in this work. The main objective of our study was to determine gas permeation properties of a specific polymeric membrane over a range of operating pressures. The diffusive layer of this membrane consists of Butadiene-Sulfone block copolymer and demonstrates high chemical stability in corrosive media. Permeances were determined at the temperature of 35• C and pressures of 760, 1520, and 3040 cmHg for methane, carbon dioxide, and nitrogen. Gas permeances were also determined for actual binary mixtures of H 2 S/CH 4 . Average permeances of 23.17 and 3.75 GPU for H 2 S and CO 2 were achieved respectively, at the pressure range of 380-1140 cmHg. Calculated permeances by a model developed for this membrane in previous literatures have been compared with experimental data in this study and the agreement of the model with H 2 S/CH 4 mixture was also investigated. The results show that the agreement between the pure gas experimental permeances and the data from the model is more in comparison with the experimental gas mixture results.

show abstract

Untitled

Cited by 7 publications

References 0 publications

A high-performance hydroxyl-functionalized polymer of intrinsic microporosity for an environmentally attractive membrane-based approach to decontamination of sour natural gas

A high-performance hydroxyl-functionalized polymer of intrinsic microporosity for an environmentally attractive membrane-based approach to decontamination of sour natural gas

Graphene and Graphene-Like Materials for Hydrogen Energy

Gas permeation properties of Seragel membrane

Contact Info

Product

Resources

About