CoAPSO-5分子筛膜制备与CO2/CH4分离性能实验

CO2/CH4 Separation Performance and CoAPSO-5 Zeolite Membrane Preparation

摘要:

采用原位水热合成法在多孔α-Al2O3上制备了CoAPSO-5分子筛膜；通过XRD和SEM检测，证明所合成的CoAPSO-5分子筛膜致密、均一、厚度20μm无取向；通过气体渗透法检测所合成的分子筛膜为无缺陷；同时，考察了CoAPSO-5分子筛膜对CO2/CH4混合气的分离效果，渗透分离结果显示，在渗透压差分别为0.3和0.5MPa时，CO2/CH4的真实分离系数分别为4.86和5.29。

Abstract:

The CoAPSO-5 membrane on the α-Al2O3 substrate was synthesized by using in situ crystallization. According to detection results of scanning electron microscopy (SEM) and X-ray diffraction (XRD), the 20μm thick membrane was composed of well intergrown CoAPSO-5 crystals, which were tightly covered on the α-Al2O3 substrate in random orientation. The gas permeation measurements revealed the resulting membrane was of high-quality with few non-zealitic pores. In addition, the separation property of CO2/CH4 through the synthesized CoAPSO-5 membrane was investigated. When the osmotic pressure was 0.3MPa and 0.5MPa, the real separation factor of CO2/CH4 was 4.86 and 5.29 respectively.