1 research outputs found
Regenerable CuO-Based Adsorbents for Low Temperature Desulfurization Application
A series
of CuO-based adsorbents for deep removal of H<sub>2</sub>S at low
temperature was prepared by a coprecipitation method. It
was found that CuO-based adsorbents are able to remove H<sub>2</sub>S from a CO<sub>2</sub> stream to less than 0.1 ppm at 40 °C.
Among them, Fe–Cu–Al–O adsorbent exhibited the
highest breakthrough capacity of 113.9 mg g<sup>–1</sup>, which
is more than 6 times that of pure CuO. The breakthrough capacity was
also dependent on the adsorption temperature, space velocity, balance
gas, and calcination temperature. The proper adsorption temperature
should be lower than 100 °C in the presence of CO<sub>2</sub>, and a higher space velocity and calcination temperature could decrease
the breakthrough capacity significantly. In addition, the CuO-based
adsorbents had a regeneration rate of 43–90% in air at a relative
low temperature from 100 to 200 °C with a stable breakthrough
capacity after four adsorption–regeneration cycles