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UV cross-linked polymer functionalized molecular sieve/polymer mixed matrix membranes

A mixed matrix membrane and polymer technology, applied in the direction of alkali metal oxides/hydroxides, alkali metal compounds, membranes, etc., can solve the problems of compatibility and adhesion of inorganic molecular sieve/polymer interface materials that have not been completely solved

Inactive Publication Date: 2011-01-26
UOP LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Despite all these research efforts, the issues of material compatibility and adhesion at the inorganic molecular sieve / polymer interface of MMM are still not completely resolved

Method used

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  • UV cross-linked polymer functionalized molecular sieve/polymer mixed matrix membranes
  • UV cross-linked polymer functionalized molecular sieve/polymer mixed matrix membranes
  • UV cross-linked polymer functionalized molecular sieve/polymer mixed matrix membranes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0078] 5.4g poly(DSDA-PMDA-TMMDA) polyimide polymer ( Figure 9 ) and 0.6g polyethersulfone (PES) are dissolved in a certain amount of an organic solvent or a mixture of several organic solvents (such as NMP, acetone and dioxolane mixed solvent) by mechanical stirring to form a uniform cast film liquid. The resulting homogeneous casting solution was degassed overnight. A poly(DSDA-PMDA-TMMDA) polymer film was prepared from the foam-free casting solution on a clean glass plate with a scalpel at a 20-mil gap. The film was then placed in a vacuum furnace together with the glass plate. Solvent was removed by slowly increasing the vacuum and temperature of the vacuum oven. Finally, the membrane was dried under vacuum at 200°C for at least 48 hours to completely remove residual solvent, forming Tables 1 and 2 and Figure 11 and 12 P1 polymer film as described in . Example 2: Preparation of UV-crosslinked poly(DSDA-PMDA-TMMDA)-PES polymer film (abbreviated as Comparative 1)

Embodiment 2

[0079] Tables 1 and 2 and Figure 11 and 12 The comparative 1 polymer film described in was prepared by exposing the P1 polymer film to UV radiation for further UV cross-linking using UV light with a wavelength of 254nm generated by a UV lamp, the distance between the film surface and the UV lamp 1.9cm (0.75 inches), irradiated at 50°C for 10min. The UV lamps described here were low pressure, mercury arc submerged UV quartz 12 watt lamps, and the 12 watt power supply was supplied by Ace Glass Incorporated. Example 3: Preparation of UV-crosslinked 30% AlPO-14 / PES / poly(DSDA-PMDA-TMMDA) mixed matrix membrane (abbreviated as MMM1)

Embodiment 3

[0079] Tables 1 and 2 and Figure 11 and 12 The comparative 1 polymer film described in was prepared by exposing the P1 polymer film to UV radiation for further UV cross-linking using UV light with a wavelength of 254nm generated by a UV lamp, the distance between the film surface and the UV lamp 1.9cm (0.75 inches), irradiated at 50°C for 10min. The UV lamps described here were low pressure, mercury arc submerged UV quartz 12 watt lamps, and the 12 watt power supply was supplied by Ace Glass Incorporated. Example 3: Preparation of UV-crosslinked 30% AlPO-14 / PES / poly(DSDA-PMDA-TMMDA) mixed matrix membrane (abbreviated as MMM1)

[0080] UV crosslinked polyethersulfone (PES) functionalized AlPO-14 / poly( DSDA-PMDA-TMMDA) mixed matrix membrane (abbreviated as MMM1) was prepared as follows:

[0081] 1.8 g of AlPO-14 molecular sieve was dispersed into the mixture of NMP and dioxolane with mechanical stirring and sonicated for 1 hour to form a slurry. Then 0.6 g of PES was added...

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Abstract

The present invention discloses a method of making, compositions and method of using high performance UV cross-linked polymer functionalized molecular sieve / polymer mixed matrix membranes (MMMs) with either no macrovoids or voids of less than several angstroms at the interface of the polymer matrix and the molecular sieves. These UV cross-linked MMMs are prepared by incorporating polymer functionalized molecular sieves into a continuous UV cross-linkable polyimide polymer matrix followed by UV cross-linking. The UV cross-linked MMMs in the form of symmetric dense film, asymmetric flat sheet membrane, or asymmetric hollow fiber membranes have good flexibility, high mechanical strength, and exhibit significantly enhanced selectivity and permeability over polymer membranes made from corresponding continuous polyimide polymer matrices for carbon dioxide / methane and hydrogen / methane separations. The MMMs are suitable for a variety of liquid, gas, and vapor separations.

Description

Background of the invention [0001] The present invention relates to a high performance UV crosslinked polymer functionalized molecular sieve / polymer mixed matrix membrane (MMM) which has no large voids or only voids smaller than a few angstroms at the polymer matrix and molecular sieve interface . Furthermore, the present invention relates to methods of making and using such UV crosslinked MMMs. [0002] Gas separation processes using membranes have undergone considerable evolution since the introduction of the first membrane-based industrial hydrogen separation processes about two decades ago. The design of new materials and efficient methods will continue to further advance membrane gas separation processes. [0003] As part of the quest for possible use as gas separation membrane materials with high permeability and high selectivity, the gas transport properties of many glassy and rubbery polymers were measured. Unfortunately, an important limitation in the development o...

Claims

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Application Information

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IPC IPC(8): B01D53/22B01D69/08B01J20/28
CPCC01B3/503C01B2203/048B01J20/28028B01J20/28078B01J20/18B01D71/68B01J20/28021B01D67/0079B01D53/228B01J20/28026B01D67/0093C01B2203/0405B01D2257/708C01B2203/047B01J20/3282B01J20/28033B01D71/70B01D67/0088B01D67/0006B01D71/64B01D67/009B01D2323/345Y02C10/10B01D2257/504B01D69/148B01D71/028B01D2257/7022B01D2323/30Y02C20/40Y02P20/151B01D53/22B01D69/08B01J20/28C08J5/22B01D71/0281B01D71/643B01D67/00793B01D67/00931
Inventor 刘春青J·J·邱S·T·威尔逊
Owner UOP LLC
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