Atomic Energy Council-institute of Nuclear Energy Research

Institute of Nuclear Energy Research, Atomic Energy Council

Chi-Hung Wang

Yau-Pin Chyou

Ching-Tsung Yu

A dry material is synthesized by alkali metal (Li, Na and K) promoted calcium aluminate carbonates to obtain a COsorbent used at a temperature higher than 600 Celsius degrees (&#xb0; C.). The key composition of the sorbents is 52&#x2dc;69% of CaO, which is beneficial to capture COat 400&#x2dc;800&#xb0; C. A breakthrough result is achieved by using this sintering-resistant sorbent, which includes the features of 50% initial carbonation capacity and 20 folds COcapturing performance maintained after 40&#x2dc;60 hours. Besides, alkali bearing material provides good velocity in COcapturing/releasing cycles; for example, by using Li and K series sorbents, 40 hours is required for 40 cycles only.

Method of fabricating medium-high temperature CO2 sorbents made of alkali metal promoted calcium aluminate carbonates

A technique of fabricating a medium-high temperature COsorbent of layered nano-carbonate is provided. A COsorbent is fabricated. The sorbent captures COat a medium-high temperature above 600&#xb0; C. Calcium acetate is introduced for making a nano-scale layered double hydroxide (LDH). The layered structure is used for templated synthesis. The sorbent has an initial conversion rate above 90%; and the conversion rate remains the same even after 100 times of carbonation/de-carbonation cycles.

Growing community of inventors

Changhua County, Taiwan

Chi-Hung Wang