期刊
CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION
卷 123, 期 -, 页码 12-19出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cep.2017.11.001
关键词
Hybrid membrane; Polyether-block-amide; Metal organic framework; Pervaporation; Desulfurization
资金
- National Natural Science Foundation of China [21490583, 21306131, 21621004]
- National Science Fund for Distinguished Young Scholars [21125627]
- Tianjin Application Foundation and Research in Cutting-edge Technology Plan [15JCQNJC43300]
- Programme of Introducing Talents of Discipline to Universities [B06006]
- State Key Laboratory of Separation Membranes and Membrane Processes(Tianjin Polytechnic University) [M2-201606]
Metal organic framework CuBTC nanoparticles were incorporated into polyether-block-amide (Pebax) to promote the transport of penetrant molecules in the membranes. The CuBTC nanoparticles can form hydrogen bonds with the Pebax chains, thus interfered with the chain packing and tailored the free volume properties of Pebax. The channels and active metal sites of CuBTC promoted the transport of sulfur-containing molecules when the membranes were employed for gasoline desulfurization. When the filler content was 2 wt%, the optimal separation performance was achieved with a permeation flux of 4.4 kg/(m(2) h) and a thiophene enrichment factor of 6.0 at 40 degrees C, increased by 36% and 11% compared with the Pebax pristine membrane. The comprehensive performance of the membranes is more competitive than widely-used PDMS membranes, especially under high temperatures. A permeation flux of 16.45 kg/(m(2) h) is reached with an enrichment factor of 4.04 at 70 degrees C.
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