祝贺王成通等同学的文章
“Wood Frame Structured Carbons with Integrated Sieving Layer for Propylene/Propane Separation”
被 Chemical Engineering Journal 接受发表！
Abstract
Adsorption separation of propylene/propane is of great importance in producing the key feedstock of propylene. The core challenge lies in the design of high-performance adsorbent materials capable of high adsorption uptake and selectivity. Here we report a proof-of-concept adsorbent of wood frame structured carbons with an integrated sieving layer, which is prepared on the basis of natural woods by imparting functional polymer layers in the wood cells. The polymer layers in the wood frame penetrate into the wood walls and transform into integrated sieving layer in the resultant carbon honeycombs, rather than block the wood channels. The effective sieving layer as well as the ordered free transport channels enable this type of material to display excellent propylene/propane separation performance, showing a high propylene adsorption uptake of 1.72 mmol g-1, and an ideal adsorbed solution theory (IAST) and dynamic selectivity up to 3.8×104 and 139 at 298 K and 1 bar, respectively. This work provides a unique idea for designing structured carbon adsorbents with selective sieving layer, which may apply to other molecular recognition, separation, and purification processes beyond propylene/propane separation.
