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首页> 外文期刊>Journal of the Taiwan Institute of Chemical Engineers >Synthesis, characterization and gas permeation study of ZIF-11/Pebax (R) 2533 mixed matrix membranes
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Synthesis, characterization and gas permeation study of ZIF-11/Pebax (R) 2533 mixed matrix membranes

机译：ZIF-11 / Pebax（R）2533混合基质膜的合成，表征和气体渗透研究

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In this research, ZIF-11 crystals were successfully synthesized, characterized and incorporated into Pebax (R) 2533 polymer in the range of 10-70 wt% to fabricate mixed matrix membranes (MMMs). SEM images as well as results of TGA and tensile testing analyses confirmed excellent adhesion between ZIF-11 and polymer matrix, especially at 30 wt% loading. The effect of filler loading on gas transport properties of the ZIF-11/Pebax (R) 2533 MMMs was studied for pure H-2, N-2, CH4 and CO2 gases. The ZIF-11 /Pebax (R) 2533 MMMs were found to suffer from polymer chain rigidification and possibly blockage of the fillers by the polymer chains (more obvious at 10 wt% loading); which reduced the permeability of the MMMs. Results showed that at higher loadings, the sieving effect of ZIF-11 dominated the rigidification or pore blockage defects. At 50 and 70 wt% ZIF-11 loadings, a few voids were seen throughout the membranes, but no agglomeration occurred even at 70 wt% loading. Nevertheless, hydrogen ideal selectivities over other gases continued the increasing trend at 50 wt% and did not significantly reduce even at 70 wt% due to high compatibility between ZIF-11 and Pebax (R) 2533. Addition of ZIF-11 to the polymer improved the gas transport properties of the Pebax (R) 2533, especially towards H-2 separation. The highest H-2/N-2 (12.86) and H-2/CH4 (4.81) ideal selectivities were obtained at 50 and 70 wt% loadings, respectively. The highest CO2 permeability (402.89 Barrer) and CO2/CH4 selectivity (12.49) were obtained for 70 wt% loading among all the prepared membranes. (C) 2016 Taiwan Institute of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
机译：在这项研究中，成功​​地合成，表征了ZIF-11晶体并将其掺入Pebax（R）2533聚合物中，其含量在10-70 wt％之间，以制造混合基质膜（MMM）。 SEM图像以及TGA和拉伸测试分析的结果证实了ZIF-11与聚合物基质之间的优异粘合性，尤其是在30 wt％的负载下。对于纯H-2，N-2，CH4和CO2气体，研究了填料填充量对ZIF-11 / Pebax（R）2533 MMM气体传输性能的影响。发现ZIF-11 / Pebax（R）2533 MMM受到聚合物链刚性的影响，并可能被聚合物链堵塞填料（在10 wt％的装载量下更明显）。这降低了MMM的渗透性。结果表明，在较高的载荷下，ZIF-11的筛分作用主要控制刚性或孔堵塞缺陷。在50和70 wt％的ZIF-11负载下，在整个膜上都观察到一些空隙，但是即使在70 wt％的负载下也没有发生团聚。然而，由于ZIF-11和Pebax（R）2533之间的高度相容性，相对于其他气体，氢气理想的选择性在50 wt％时仍保持增加的趋势，甚至在70 wt％时也没有明显降低。ZIF-11在聚合物中的添加得到改善Pebax（R）2533的气体传输特性，尤其是对H-2分离的传输特性。分别在50和70 wt％的负载量下可获得最高的H-2 / N-2（12.86）和H-2 / CH4（4.81）理想选择性。在所有制备的膜中，负载量为70 wt％时，可获得最高的CO2渗透性（402.89 Barrer）和CO2 / CH4选择性（12.49）。 （C）2016台湾化学工程师学会。由Elsevier B.V.发布。保留所有权利。

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