نوع مقاله : ترویجی
1 کارشناسی ارشد دانشکده مهندسی شیمی، دانشگاه صنعتی سهند تبریز، تبریز، ایران
2 دانشجوی دکتری دانشکده مهندسی شیمی، دانشگاه صنعتی سهند تبریز، تبریز، ایران
3 استاد دانشکده مهندسی شیمی، دانشگاه صنعتی سهند تبریز، تبریز، ایران
عنوان مقاله [English]
Study on the results of the different membranes performance used in the hydrogen purification and comparing them at the trade off curve for H2/N2 system, have shown that palladium membranes have situated at the suitable position of the curve, so that high permeability (104-105 Barrer) and selectivity (103-104) have been achieved by the Pd membranes for the hydrogen purification. The permeability of silica membranes has also been at the range of 103 to 104 Barrer and their selectivity has been even more than 104 that situated them after Pd membranes at the trade off curve. The permeability of hydroxy sodalite zeolite membranes has been comparable to Pd membranes and at the range of even more than 104 Barrer, but very low selectivity of even less than 10 has been achieved for this kind of membranes. Certainly, it should be mentioned that so desirable selectivities and even infinite selectivity of these membranes have been achieved for the H2/Hydrocarbon systems which are presented at the different sources. Despite of so suitable selectivity, polymeric membranes have very low permeability of hydrogen which should be modified. Although, mixed matrix nanocomposite membranes could solve this problem to some extent.