Hydrogen separation in doped and blend polymer membranes

Acharya, N.K.; Kulshrestha, Vaibhav; Awasthi, Kamlendra; Jain, Anil Kumar; Singh, Manjeet; Vijay, Y.K.

doi:10.1016/j.ijhydene.2007.07.030

Cited by 37 publications

(19 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The maximum increment in H 2 /CO 2 selectivity from 5.9 to 7.0 was obtained at a curing temperature of 230 • C. The possibility of using a polysulfone (PS)/polycarbonate (PC) blend for H 2 /CO 2 separation membranes was studied by Acharya et al [65]. Although the PS/PC blend increases H 2 permeability by 75% from 5.3 (pure PS) to 22, the corresponding H 2 /CO 2 selectivity decreases by 50% from 2.5 to 1.2.…”

Section: Polymer Blendsmentioning

confidence: 99%

Polymeric membranes for the hydrogen economy: Contemporary approaches and prospects for the future

Shao

Low

Chung

et al. 2009

Journal of Membrane Science

317

161

View full text Add to dashboard Cite

Section: Polymer Blendsmentioning

confidence: 99%

Polymeric membranes for the hydrogen economy: Contemporary approaches and prospects for the future

Shao

Low

Chung

et al. 2009

Journal of Membrane Science

317

161

View full text Add to dashboard Cite

“…With the use of polymers as gas membranes for separation technology and PEM fuel cell electrolytes, the majority of the studies have focused on permeation of hydrogen [12][13][14][15][16][17][18][19] , with some groups also investigating the sorption characteristics of the polymers 18,20,21 . Fiber reinforced polymers are the leading candidate for hydrogen piping systems 6 , and polymers can be used as metal pipe and tank liners.…”

Section: Effect Of Hydrogen On the Mechanical Properties Of Polymersmentioning

confidence: 99%

Review on the effects of hydrogen at extreme pressures and temperatures on the mechanical behavior of polymers.

Hecht¹

2013

View full text Add to dashboard Cite

The effects of hydrogen on the mechanics (e.g. strength, ductility, and fatigue resistance) of polymer materials are outlined in this report. There are a small number of studies reported in the literature on this topic, and even fewer at the extreme temperatures to which hydrogen service materials will be exposed. Several studies found little evidence that hydrogen affects the static tensile properties, long term creep, or ductile fracture of high density polyethylene or polyamide. However, there has been a report that a recoverable drop in the modulus of high density polyethylene is observable under high hydrogen pressure. A research need exists on the mechanical effects of hydrogen on the wide range of polymers used or considered for use in the hydrogen economy, due to the lack of data in the literature.

show abstract

“…Generally, there are different methods including blending, doping, chemical crosslinking, copolymerization, group substitution being used to modify the polymer structures. Among them group substitution shows better performance for improving the solubility of polymers in solvents without major compromise in thermal stability …”

Section: Introductionmentioning

confidence: 99%

Gas permeation properties of poly(2,5‐benzimidazole) derivative membranes

Jiang

Xiao

Kang

et al. 2014

J of Applied Polymer Sci

View full text Add to dashboard Cite

In this article, three novel polymers based on poly(2,5‐benzimidazole) (ABPBI) were synthesized by introducing propyl, isobutyl or n‐butyl groups to its side chain through an alkyl substitution reaction. FTIR and 13C NMR were applied to confirm the formation of corresponding chemical groups. Their physical properties including crystallinity, thermal stability, mechanical strength, and micro‐morphology were also characterized. Their solubility in common solvents were also tested to see if the modification will bring any improvement. Gas permeation properties of three derivative membranes prepared by a casting and solvent‐evaporation method were tested with pure gases including H2, N2, O2, CH4, and CO2. It has been revealed that gas with a smaller molecular size owned a larger permeability. This means gas permeation in all prepared membranes should be diffusivity selective. Among all three modified ABPBI membranes, isobutyl substitution modified ABPBI (IBABPBI) showed the best selectivity of H2 over other gases such as N2 (∼185) and CO2 (∼6.3) with a comparable permeability (∼9.33 barrer) when tested at 35°C and 3.0 atm. Testing temperature increase facilitated gas permeation for all three membranes obviously; while in term of gas selectivity temperature increase showed diverse alteration because it brought variable impact on gas solubility of different gases. Even so, IBABPBI membrane still owned acceptable selectivity of H2 over N2 (∼118) and CO2 (∼6.3) with an almost doubled permeability (∼17.5 barrer) when tested at 75°C and 3.0 atm. Additional tests showed that running at high pressure did not bring any obvious deterioration to gas separation performance of IBABPBI membrane. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014, 131, 40440.

show abstract

Hydrogen separation in doped and blend polymer membranes

Cited by 37 publications

References 12 publications

Polymeric membranes for the hydrogen economy: Contemporary approaches and prospects for the future

Polymeric membranes for the hydrogen economy: Contemporary approaches and prospects for the future

Review on the effects of hydrogen at extreme pressures and temperatures on the mechanical behavior of polymers.

Gas permeation properties of poly(2,5‐benzimidazole) derivative membranes

Contact Info

Product

Resources

About