High specific surface area aerogel cryoadsorber for vacuum pumpi

Details High specific surface area aerogel cryoadsorber for vacuum pumpi High specific surface area aerogel cryoadsorber for vacuum pumpi

1998-12-22

2000-09-26

Doerrler, William

Refrigeration

Low pressure cold trap process and apparatus

62 511, B01D 800

Patent

active

061229202

ABSTRACT:
A cryogenic pumping system is provided, comprising a vacuum environment, an aerogel sorbent formed from a carbon aerogel disposed within the vacuum environment, and cooling means for cooling the aerogel sorbent sufficiently to adsorb molecules from the vacuum environment onto the aerogel sorbent. Embodiments of the invention include a liquid refrigerant cryosorption pump, a compressed helium cryogenic pump, a cryopanel and a Meissner coil, each of which uses carbon aerogel as a sorbent material.

REFERENCES:
patent: 5386706 (1995-02-01), Bergsten et al.

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