期刊
JOURNAL OF MEMBRANE SCIENCE
卷 367, 期 1-2, 页码 197-203出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.memsci.2010.10.059
关键词
Mixed matrix membrane; Natural gas; Mixed gas; High loading; Gas separation
资金
- NSF-STC (CERSP) [CHE-9876674]
- King Abdullah University of Science and Technology (KAUST) [KUS-I1-011-21]
Mixed matrix matrix membranes (MMMs) with low particle loadings have been shown to improve the properties of pure polymers for many gas separations. Comparatively few reports have been made for high particle loading (>= 50 vol.%) MMMs. In this work, CO2-CH4 feeds were used to study the potential of 50 vol.% zeolite 4A-poly(vinyl acetate) (PVAc) MMMs for natural gas separations. A low CO2 partial pressure mixed feed probed MMM performance below the plasticization pressure of PVAc and a high CO2 partial pressure mixed feed probed MMM performance at industrially relevant conditions above the plasticization pressure. Under both mixed feed conditions at 35 degrees C, substantial improvements in overall separation performance were observed. At low CO2 partial pressures. CO2 permeability roughly doubled with a nearly 50% increase in selectivity versus pure PVAc under the same conditions. For the high CO2 partial pressure feed, CO2 permeability remained effectively unchanged with a 63% increase in selectivity versus pure PVAc. Surprisingly, the performance of these PVAc based MMMs approached the properties of current upper bound polymers. Overall, this work shows that significantly improved performance MMMs can be made with traditional techniques from a low cost, low performance polymer without costly adhesion promoters. Published by Elsevier B.V.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据