CHARACTERIZATION OF HOLLOW FIBRE MEMBRANES FOR OXYGEN PERMEATION AND PARTIAL OXIDATION REACTIONS

Influence of permeation modes on oxygen permeability of the multichannel mixed-conducting hollow fibre membrane

A multichannel mixed-conducting hollow fibre (MMCHF) membrane, Ba0.5Sr0.5Co0.8Fe0.2O3 δ, has been successfully prepared by a combined phase inversion and sintering technique. Two possible permeation modes can be used in the hollow fibre membrane. One mode is that oxygen permeates from the shell side of the membrane to the lumen side (SL mode), with the other mode being in the direction from the...

Oxygen Permeation Studies of Ba0.5Sr0.5Co0.8Fe0.2Ox Asymmetric Membranes

Characterization of Commercial Ceramic and Hybrid Membranes Using Gas Permeation and Permporometry Tests

The gas separation performance of commercial ceramic Titania and hybrid silica (HybSi®) membranes was assessed using the gas permeation and permporometry methods. Results indicated that the HybSi® membranes have a hybrid surface containing regions covered by a polymeric matrix and others with inorganic pores. These membranes have high H2 selectivity, which incre...

Synthesis, Characterization and Vapor Permeation Performance of B-ZSM-5 Membranes

In the present work, B-ZSM-5 zeolite membranes were synthesized on porous tubular α-alumina supports by several subsequence in situ crystallization hydrothermal treatments. The TiO2- Bohmite and ɣ- alumina intermediate layers were applied to improve the lattice matching between zeolite layer and the support. The uniform membrane intermediate layers with low permeation resistance were...

extraction and characterization of allium irancum plant extract and its application in the green synthesis of silver nano particles and oxidation of thiocarbony1 compounds

سنتز سبز نانوذرات فلزی (nps) درسالهای اخیر توجه بسیارزیادی را به خود جلب کرده است. زیرا این پروتوکل کم هزینه وسازگار با محیط زیست از روش های استاندارد سنتز. در این پایان نامه ما گزارش میکنیم یک روش ساده و سازگار با محیط زیست برای سنتز نانوذرات نقره با استفاده از محلول آبی عصاره گیاه allium iranicum به عنوان یک عامل کاهش دهنده ی طبیعی. نانو ذرات نقره مشخص شد با استفاده از تکنیک های uv-visible، x...