Bimodal catalytic membrane

Li, G., Kanezashi, M. and Tsuru, T. (2011) Highly enhanced ammonia decomposition in a bimodal catalytic membrane reactor for CO -free hydrogen production. Catalysis Communications, 15, 60-63. 

Tsuru, T., Shintani, H., Yoshioka, T. and Asaeda, M. (2006) A bimodal catalytic membrane having a hydrogen-permselective silica layer on a bimodal catalytic support Preparation and application to the steam reforming of methane. Applied Catalysis A General, 302, 78-85. 

Schematic concept of a bimodal catalytic membrane (microporous... 

Ru(N0)(N03)3 solution. After drying, the support is calcined at 550°C in air to obtain a bimodal catalytic support (Ru/Y-Al203/a-Al203). Finally, a homogeneous silica membrane is prepared on the outside surface of the bimodal catalytic support using polyhedral oligomeric silses-quioxane (POSS) as precursor, by the sol-gel method. 

The first approach in using vesicle membranes in nanoparticle synthesis was to polymerize vesicles formed from 9 1 and 1 1 mixtures of 1 and 2 in the presence of Pd(NH3)4Cl2. Palladium ions bound to negatively charged phospholipids in bilayer membranes had been previously demonstrated to serve as catalytic sites for electroless metallization (47). Light scattering revealed that bimodal populations of vesicles were formed both from the 9 1 (31 + 15 nm and 114 + 40 nm) and 1 1 (38 + 13 nm and 109 + 41 nm) mixtures. Exposure of the vesicles to UV radiation (254 nm) resulted in the reaction of 33 % + 6% of the lipid monomer when 10 % of 2 was present and 50% + 4% for vesicles containing 50% 2. The differences in the amount of reaction of monomer are probably due to both ion and pH effects. Non-cross linked polymerized vesicle membranes consist of many individual... 

---