Development of new alumina-modified sorbents for CO2 sorption and regeneration at temperatures below 200 °C

摘要: Abstract A new regenerable alumina-modified sorbent was developed for CO 2 capture at temperatures below 200 °C. The capacity of a potassium-based containing Al O 3 (KAlI) decreased during multiple sorption (60 °C) and regeneration (200 °C) tests due to the formation KAl(CO )(OH) phase, which could be converted into original K phase above 300 °C. However, (Re-KAl(I)) maintained its even temperature 130 °C. In particular, Re-KAl(I)60 prepared by impregnation with 60 wt.% about 128 mg /g sorbent. This excellent property were characteristics Re-KAl(I) producing only KHCO sorption, unlike KAlI30 formed phases 60 °C. result explained through structural effect support in presence .