Microchannel reactors for fast periodic operation: the catalytic dehydration of isopropanol

Microchannel reactors for fast periodic operation: the catalytic dehydration of isopropanol

A microchannel reactor specially designed for periodic operation and a process to deposit a catalyst, -alumina, inside the reactor channels were developed. The hydrodynamics of the reactor was characterised. Although the #ow in the microchannels is laminar, a uniform radial concentration pro"le and consequently a narrow residence time distribution were obtained. Depending on the manufacturing m...

Catalytic membrane-installed microchannel reactors for one-second allylic arylation.

A variety of catalytic membranes of palladium-complexes with linear polymer ligands were prepared inside a microchannel reactor via coordinative and ionic molecular convolution to provide catalytic membrane-installed microdevices, which were applied to the instantaneous allylic arylation reaction of allylic esters and aryl boron reagents under microflow conditions to afford the corresponding co...

Catalytic dehydration of alcohols

Microstructured reactors for catalytic reactions

This review addresses the catalytic reactions performed in microstructured reactors, which are more and more recognized in recent years as a novel approach for chemistry and chemical process industry. They are particularly suited for highly exothermic and fast reactions allowing temperature control and isothermal operation. A brief evaluation of the advantages for gas-phase, liquid-phase, and g...

The use of periodic operation to improve the performance of continuous stirred tank reactors

The influence of enforced periodic concentration variations on a continuous stirred tank reactor was studied theoretically. The unsteady-state-processing becomes advantageous under certain conditions. This can be shown for an irreversible consecutive-competing reaction. The yield and selectivitv of the intermediate oroduct can exceed the values obtainable at steady-state-processing in the menti...