Polymers of Intrinsic Microporosity PIMs

A special kind of PIM network has been demonstrated to adsorb around 1.5-1.7 wt% H2 at 77.3 K and 1 bar, and up to 2.71 wt% at 10 bar. Hydrogen uptake for these materials is observed to be 1.4% by mass adsorbed at 1 bar and 1.7% at 10 bar for the cyclotricatechylene-PIM (CTC-PIM). The tripty-cene-based polymer (Trip-PIM) shows a better result of 1.6% by mass at 1 bar and 2.7% at 10 bar. Porphyrin-PIM (Porph-PIM) and PIM-7 have also been reported to absorb significant amounts of Ha- Table 10.1 represents the hydrogen uptake for all of these PIMs at 77 K. Trip- R)-PIMs with shorter all l chains at moderate pressure show excellent H2 adsorption for Trip-(Me)-PIMs, the adsorption of 3.4% by mass at 18 bar is comparable to different types of microporous compounds with similar BET surface areas (Table 10.1). [Pg.252]

In addition, the polymers of intrinsic microporosity (PIMs), such as phthalocyanine networks and the Co phthalocyanine network-PIM (CoPc20), display high specific surface area, as confirmed by the N2 adsorption isotherm at 77 K, and by the adsorption of small organic probe molecules from aqueous solutions at 298 K [236], This material is basically microporous with an increased concentration of effective nanopores. [Pg.330]

The polymers of intrinsic microporosity (PIMs). These are rigid macromolecules composed of a fused-ring subunit which cannot pack space efficiently and hence form microporous materials (Figure 2.5) [68]. [Pg.48]

Polymers of intrinsic microporosity (PIMs Sect. 2.2) 500-1,064 a Both thermal and chemical stabUity high Linear PIMs are solution-processable [9, 46]... [Pg.5]

Budd PM, Ghanem BS, Makhseed S, McKeown NB, Msayib KJ, Tattershall CE. Polymers of intrinsic microporosity (PIMs) Robust, solution-processable, organic nanoporous... [Pg.176]

N.B. McKeown and P.M. Budd, Polymers of intrinsic microporosity (PIMs) organic materials for membrane separations, heterogeneous catalysis and hydrogen storage, Chem. Soc. Rev., 35 (2006) 675-683. [Pg.327]

The inventors caU this polymer class polymers of intrinsic microporosity (PIMs) , because their porosity arises as a consequence of the molecular structure and is not generated solely through processing. The PIMs can exhibit analogous behavior to that of conventional materials, but, in addition, may be processed into convenient forms for use as membranes [291]. The gas-permeation properties of membranes formed from PIM-1 were investigated at the GKSS... [Pg.61]

C. E. Tattershall, Polymers of intrinsic microporosity (PIMs) robust, solu-tion-processable, organic nanoporous materials. Chemical Communications 2004, (2), 230 231. [Pg.88]

Advanced organic and inorganic membranes and materials include polymers of intrinsic microporosity (PIMs), microporous PVDF, perovskite and palladium alloy membranes [45]. PIM membranes have displayed both high permeability with high selectivity for various gas mixtures. Major commercial and promising applications of membrane GS are delineated below [43—45] ... [Pg.51]

Du N, Robertson GP, Song J et al (2009) High-performance carboxylated polymers of intrinsic microporosity (PIMs) with tunable gas transport propertiesf. Macromolecules 42 6038-6043... [Pg.177]

Li FY, Xiao Y, Chung T-S et al (2012) High-performance thermally self-cross-linked polymer of intrinsic microporosity (PIM-1) membranes for energy development. Macromolecules 45 1427-1437... [Pg.177]

If the answer to both these questions is yes , then the polymer can be said to have intrinsic microporosity [3,4] intrinsic because it is a consequence of the molecular structure and microporosity because we are dealing with micropores in the sense defined by lUPAC [2], This chapter introduces a concept for creating just such polymer structures, outlines the properties of the archetypal polymer of intrinsic microporosity , PIM-1, and describes recent results for PIM-1 obtained in the course of a European collaborative research project [5]. [Pg.30]

Figure 7.17 Influence of porous aromatic frameworks (PAFs) on the CO2 permeability coefficient of different glassy polymers, polyftrimethylsilyl propyne) (PTMSP), PMP, and polymers of intrinsic microporosity (PIM)-l, with respect to the aging phenomenon.

A.R Bushell, M.P. Attfleld, C.R. Mason, P.M. Budd, Y. Yampolskii, L. Starannikova, A. Rebrov, F. Bazzarelli, P. Bernardo, J. Carolus Jansen, M. Lane, K. Fiiess, V. Shantarovich, V. Gustov, V. Isaeva, Gas permeation parameters of mixed matrix membranes based on the polymer of intrinsic microporosity PIM-1 and the zeoMc imidazolate framework ZIF-8, Journal of Membrane Science 427 (2013) 48-62. [Pg.201]

J. Ahn, W.-J. Chung, I. Pinnau, J. Song, N. Du, G.P. Robertson, M.D. Guiver, Gas transport behavior of mixed-matrix membranes composed of silica nanoparticles in a polymer of intrinsic microporosity (PIM-1), Journal of Membrane Science 346 (2010)... [Pg.205]

M.M. Khan, V. Fihz, G. Bengtson, S. Shishatskiy, M.M. Rahman, J. LiUepaerg, V. Abetz, Enhanced gas permeability by fabricating mixed matrix membranes of functionalized multiwalled carbon nanotubes and polymers of intrinsic microporosity (PIM), Journal of Membrane Science 436 (2013) 109-120. [Pg.205]

Polymers of intrinsic microporosity (PIMs) consist of phthalocyanines and porphyrins containing metal ions or H in the cavities and they exhibit variation in surfaee area due to the varying metal ions or On tuning... [Pg.214]

Porous organic frameworks (POFs), such as metal-organic frameworks (MOFs), covalent organic frameworks (COFs), conjugated micro-porous polymers (CMPs), ° polymers of intrinsic microporosity (PIMs), crystalline triazine-based organic frameworks (CTFs), hyper-crosslinked... [Pg.221]

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