| 一系列稀土金属有机骨架的储气以及荧光性质 |
| Gas Storage and Optic Properties of a Series of Rare Earth Metal Organic Frameworks |
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| 摘要: 合成了一系列具有高热稳定性的金属有机骨架材料RE(BTC)(H2O)，(RE=Y，Tb，Eu，Yx-Tb1-x，Yx-Eu1-x)，除去端基水分子后可得到具有一维孔道的空旷结构RE(BTC)。其中，Y(BTC)具有良好的氢气以及甲烷储存性能。在77 K，1 atm条件下，氢气的吸附量高达1.73wt%；在室温，4 MPa条件下，Y(BTC)的甲烷储存量达到饱和，可以达到97.7 cm3·g-1(STP)，在美国能源部规定的安全储运压力(3.5 MPa)下，甲烷储存量也能达到96.0 cm3·g-1(STP)，与其它同类多孔材料相比具有一定的优越性。骨架中掺杂了微量金属铽(Tb)，铕(Eu)的Tbx-Y1-x(BTC)(H2O)，Euy-Y1-y(BTC)(H2O)与单一金属的Tb(BTC)(H2O)和Eu(BTC)(H2O)相比，不但降低了材料的成本，而且减小了浓度淬灭对材料荧光性质的影响，优化了材料的荧光性能。 |
| 关键词: 金属有机骨架材料 稀土 储氢 甲烷储存 荧光 |
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| Abstract: A series of rare earth metal-organic framework materials [RE(BTC)(H2O), RE=Y, Tb, Eu, Yx-Tb1-x, Yx-Eu1-x] with high thermal stability have been synthesized. The frameworks [RE(BTC)] contain 1-dimensional channels upon removal of the terminal water molecules. Therein, Y(BTC) expresses an excellent storage ability of H2 and CH4. The H2 storage of Y(BTC) can reach 1.73wt% at 77 K and 1 atm. At room temperature, the saturated CH4 masses are 97.7 cm3·g-1(STP) at 4 MPa; even under the U.S. DOE pressure standard (3.5 MPa), the masses can reach approximate 96.0 cm3·g-1(STP). This is a very outstanding ability for this kind of porous material. Moreover, Tb, Eu-doped Tbx-Y1-x(BTC)(H2O) or Euy-Y1-y(BTC)(H2O) have eximious optic properties, the cost is reduced deeply as well. |
| Keywords: metal organic framework rare earth hydrogen storage methane storage fluorescence |
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| 李忠月,刘 昆,张运兴,朱广山,裘式纶.一系列稀土金属有机骨架的储气以及荧光性质[J].无机化学学报,2012,28(4):710-714. |
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