National Institute of Advanced Industrial Science and Technology

Mitsubishi Gas Chemical Company, Inc.

Kyoto Pharmaceutical University

Tomoya Inoue

Yasuhiro Suzuki

Hiroyuki Kimura

Tohru Natsume

Tomio Kato

Shungo Adachi

Katsuo Mogi

A method for producing a liquid reaction mixture containing a radioisotope, in particular, a radioactive composition, minimizes device contamination with radioactive substances and increase speed and accuracy with which droplets are mixed. The method for producing a radioactive composition includes placing at least one first droplet Lcontaining a radionuclide and at least one second droplet Lcontaining a labeling substance on at least two respective dimplesamong dimpleson a front surfaceof an insulating layerof a liquid manipulation device, and obtaining a liquid mixture M by using a change in electrostatic force caused by changing voltage applied to the electrodesto thereby cause a relative movement between the at least one first droplet Land the at least one second droplet Lso that the at least one first droplet Land the at least one second droplet Lare mixed together at any one dimple among the dimples

Method for producing radioactive composition

The present invention provides a fixed bed reactor for carrying out a mixed gas/liquid phase reaction, wherein the reactor has a piping structure composed of microchannels, the cross-sectional area of the fixed bed is 0.0001 cmto 0.008 cmand a single or parallely arranged two or more fixed beds, and the reactor has, in addition to the fixed beds, a gas phase distribution portion, a portion for introducing the gas phase to the fixed bed, a liquid phase distribution portion, a portion for introducing the liquid phase to the fixed bed, a packing material introduction portion and a fluid merging portion, a gas/liquid mixed phase reaction process for carrying out a gas/liquid mixed phase reaction using the fixed bed reactor described above, and further a process for producing hydrogen peroxide in which the reaction is started and stopped in a reducing atmosphere, and the present invention further provides a novel fixed bed gas/liquid mixed phase reactor which makes it possible to carry out gas/liquid mixed phase reactions stably and under steady state conditions by using microchannels.

Fixed bed mixed gas/liquid phase reactor and mixed gas/liquid phase reaction process using the same

Growing community of inventors

Miyagi, Japan

Tomoya Inoue