廢棄寶特瓶作為配位基來源以合成金屬有機骨架及其碳化研究

The waste PET bottles as ligands source to synthesize metal-organic frameworks and carbonation studies

許嘉吟(Chia-Yin Hsu)

指導教授 ： 林嘉和

中原大學/理學院/化學研究所/碩士(2016年)

https://doi.org/10.6840/cycu201600770

摘要

本論文第一部分，主要是利用廢棄寶特瓶( PET )作為直接前驅物，經水熱反應後解聚成對苯二甲酸( Benzene dicarboxylic acid, H2BDC )，而直接做為有機配位基來源與金屬離子進行反應形成金屬有機骨架化合物，最佳反應條件顯示所有廢PET材料在反應中已經全部解聚，這些綠色合成的金屬有機骨架化合物分別為:
1-PET
2-PET
3-PET
作為利用廢棄寶特瓶來合成的對比研究以及後續碳化金屬有機骨架前驅物的製備，在論文中也嘗試使用已知的或新的合成方法將對苯二甲酸與鹼金族金屬( Li, Na, K )以及鹼土族金族( Mg, Ca, Sr, Ba )進行反應，合成出文獻中已知的金屬有機骨架化合物，這些金屬有機骨架化合物分別為:
[Li2(BDC)]-----------------1
[Na2(BDC)]----------------2
[K2(BDC)]------------------3
[Mg(BDC)(H2O)2 ]-------4
[Ca(BDC)(H2O)3]--------5
[Sr(BDC)(H2O)]----------6
[Ba(BDC)]-----------------7
在化合物性質鑑定上，使用PXRD初步鑑定化合物之結構；以SEM觀察其形貌與粒徑大小，並使用熱重分析儀、孔徑分析儀探討化合物特性。
在本論文第二部分，則是將第一部分合成的化合物2, 4, 5 以直接碳化(carbonation)方式在N2下高溫鍛燒製備奈米孔洞碳材，將金屬有機骨架材料直接碳化製備多孔性碳材。在性質鑑定上，使用PXRD初步鑑定化合物之結構；以SEM觀察其形貌與粒徑大小，並用EDS做元素組成鑑定，最後使用孔徑分析儀量測材料對氣體的吸脫附特性與其孔徑分布。

關鍵字

金屬有機骨架 ； 碳化 ； 寶特瓶

並列摘要

In the first part of this thesis, the waste polyethylene terephthalate ( PET ) bottle material has directly been used as starting precursor instead of benzene dicarboxylic acid ( H2BDC ) for the synthesis of three alkali and alkali earth metal-organic frameworks ( MOFs ). The optimal reaction condition has been achieved for all the MOFs with 100% depolymerization of waste PET material in the reaction. These green prepared MOFs are namely as:
1-PET
2-PET
3-PET
Comparative study of the use of waste PET bottles to be prepared and the subsequent carbonation of metal-organic framework as a precursor, the thesis also synthesizes known metal organic framework by using known or new synthesis method to react with H2BDC and alkali metal ( Li, Na, K ) and alkaline earth metal ( Mg, Ca, Sr, Ba ). These synthesized metal organic frameworks are namely as:
[Li2(BDC)]-----------------1
[Na2(BDC)]----------------2
[K2(BDC)]-----------------3
[Mg(BDC)(H2O)2]-------4
[Ca(BDC)(H2O)3]--------5
[Sr(BDC)(H2O)]----------6
[Ba(BDC)]-----------------7
The synthesized MOFs have been characterized using powder X-ray diffraction (PXRD), scanning electron microscopy (SEM), thermal gravimetric analyses (TGA), and N2 gas sorption measurements.
In the second part of this thesis, those synthesized compounds 2, 4 and 5 were directly carbonized under N2 and high temperatures. This method can directly transform MOFs to nanoporous carbon (NPC) materials. The achieved NPC were also characterized using powder X-ray diffraction, scanning electron microscopy, energy dispersive spectrometer (EDS), thermal gravimetric analyses, and N2 gas sorption measurements.

並列關鍵字

metal-organic frameworks ； carbonation ； waste PET

參考文獻

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