DIAION^(R) & SEPABEADS^(R)  
Synthetic Adsorbents

  GENERAL FEATURE

Synthetic adsorbents are a series of products based on ion-exchange resin manufacturing technology, and are designed for the uses as solid extractant. Synthetic adsorbents have large surface area and fine pore structures inside the particle like activated carbon. For this porous characteristic, they can effectively adsorb organic compounds from aqueous solutions. Extraction processes with synthetic adsorbents enables reducing solvent amount and safer operations compared with conventional solvent extraction techniques.

  PROPERTIES

A synthetic adsorbent is spherical particle, and inside it, there exist effective fine pore structures suitable for the diffusion of solutes

Smaller solutes can penetrate into the particle by diffusing through the pores, when a solution is allowed to contact with adsorbent particles.

On the contrary, molecules that are larger than pore size cannot penetrate into the inside of particle. Consequently, such molecules are not adsorbed on synthetic adsorbents (this phenomenon is so-called molecular sieving effect).

  APPLICATION FIELDS

Synthetic adsorbents are used for the separation of valuable compounds from plant extracts and fermentation products for pharmaceutical intermediates and food additives.

  STABILITY

Synthetic adsorbents are stable in acidic, alkaline solutions and in organic solvents, and they can be easily regenerated under mild conditions for repeated uses.