High surface area adsorbents and methods of preparation

Details High surface area adsorbents and methods of preparation High surface area adsorbents and methods of preparation

1999-12-17

2000-11-14

Foelak, Morton

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Ion-exchange polymer or process of preparing

521 53, 521 56, 521146, 521 38, 5253322, 525344, C08F 836, C08F 838, C08F 818

Patent

active

061471275

ABSTRACT:
A process for the preparation of high surface area, low-swelling macroporous polymeric adsorbents is disclosed. The use of organic sulfonic acids to provide postcrosslinking of macroporous copolymers eliminates the need for traditional organic swelling solvents and Lewis-acid catalysts used to provide conventional macronetted polymers. In particular, methanesulfonic acid provides macroporous polymeric adsorbents having high surface area and porosity, low levels of residual vinyl groups, and free of residual contaminants from conventional Lewis-acid/Friedel-Crafts reactions.

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R.V. Law et al., Macromolecules, vol. 29, pp. 6248-6293 (1996).
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