一个高度水稳定的基于碳酸的铜金属有机框架,用于高效的高温butanol分离
Lei Gan1, Arunraj Chidambaram2, Pol G Fonquernie1
1Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), E-08193 Bellaterra, Barcelona, Spain.
Journal of the American Chemical Society
|April 28, 2020
概括
一个新的疏水金属有机框架,mCB-MOF-1,有效地从稀释水溶液中分离butanol. 这种材料对酒精的亲和力比ZIF-8高,为生物燃料生产提供了有前途的解决方案.
科学领域:
- 材料科学
- 化学工程
- 可持续能源
背景情况:
- 生物燃料是化石燃料的可持续替代品,生物butanol正受到越来越多的关注.
- 从稀释发酵中分离butanol (最大2重%) 是一个主要的生产挑战.
- 现有的吸附剂,如石和MOF,由于水友性或不稳定性而存在局限性.
研究的目的:
- 从稀释的水溶液中开发一种具有成本效益的吸附剂.
- 研究一种新的疏水性金属有机框架 (MOF),mCB-MOF-1,用于对乙-布坦醇-乙醇 (ABE) 混合物的吸附分离.
主要方法:
- 使用铜离子和碳酸盐配体合成和表征一种新的疏水性MOF,mCB-MOF-1.
- 在各种溶剂和水溶液中评估mCB-MOF-1的稳定性.
- 使用蒸汽异热体进行吸附研究,以比较mCB-MOF-1与水,乙醇,丁醇和的ZIF-8.
- 在 333 K 的 ABE 混合物中测试mCB-MOF-1 的分离性能.
主要成果:
- mCB-MOF-1 在有机溶剂,热水和酸性/基性溶液中表现出极好的稳定性.
- mCB-MOF-1对水呈现了II型异温,表明它具有疏水性,对酒精和的亲和力比ZIF-8更高.
- 在ABE混合物分离中,mCB-MOF-1与ZIF-8相比,在333K时显示出更高效的butanol回收.
结论:
- 新型疏水性MOF,mCB-MOF-1,是一种稳定且有前途的材料,可从稀释水溶液中有效回收butanol.
- 在生物燃料生产中,mCB-MOF-1比ZIF-8等现有材料具有优势.
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