Co adsorbents with hysteresis

Details Co adsorbents with hysteresis Co adsorbents with hysteresis

B - Operations, Transporting

01

J

B01J 20/02 (2006.01) B01D 53/04 (2006.01) B01D 53/047 (2006.01) B01J 20/32 (2006.01) C01B 31/18 (2006.01)

Patent

CA 2147702

The Present Invention is directed to a composition, its synthesis and a process for adsorptive separation of carbon monoxide from gas mixtures using adsorbents, which comprise cuprous compounds on amorphous oxide macroporous supports. The compositions are prepared by impregnating cupric compounds on supports followed by reduction of the cupric compound to the corresponding cuprous compound. The reduction can be performed by the use of a reducing gas, preferably synthesis gas at relatively low temperatures up to 150C, preferably preceded by the use of elevated temperature above 250C. All the adsorbents described in this invention consist of CuCl particles of finite size supported on macroporous support materials including alumina and silica gel. Among the ingredients used to form supported CuCl fine particles are support materials of low dispersing power, high copper loading, absence of dispersants, and proper post heat- treatment. The bulk nature of the active component (i.e., CuCl particles) and the resulting hysteresis in desorption provide adsorbents which have both high working capacity and high selectivity for a pressure swing adsorptive separation process.

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