The synthesis of stable, water-soluble tris and tetrakis aminium dyes. More particularly, carboxylic-acid modified tris and tetrakis dye intermediates, as well as salts and near-infrared dyes formed therefrom, as well as compositions including the dyes.
Dehydrogenation of Liquid Fuel in Microchannel Catalytic Reactor
申请人:Toseland Bernard Allen
公开号:US20090019768A1
公开(公告)日:2009-01-22
The present invention is an improved process for the storage and delivery of hydrogen by the reversible hydrogenation/dehydrogenation of an organic compound wherein the organic compound is initially in its hydrogenated state. The improvement in the route to generating hydrogen is in the dehydrogenation step and recovery of the dehydrogenated organic compound resides in the following steps:
introducing a hydrogenated organic compound to a microchannel reactor incorporating a dehydrogenation catalyst;
effecting dehydrogenation of said hydrogenated organic compound under conditions whereby said hydrogenated organic compound is present as a liquid phase;
generating a reaction product comprised of a liquid phase dehydrogenated organic compound and gaseous hydrogen;
separating the liquid phase dehydrogenated organic compound from gaseous hydrogen; and,
recovering the hydrogen and liquid phase dehydrogenated organic compound.