CaO-based sorbents for CO2 capture prepared by ultrasonic spray pyrolysis

Maryam Sayyah, Brandon R. Ito, Massoud Rostam-Abadi, Yongqi Lu, Kenneth S Suslick

Research output: Contribution to journalArticlepeer-review


We report the ultrasonic spray pyrolysis (USP) synthesis and characterization of composite calcium oxide-based sorbents for carbon dioxide capture. Inclusion of a small amount of Al2O3 into the CaO matrix (as low as Al/Ca: 0.03) yielded significant enhancement of resistance to recycling degradation. The effective homogenous dispersion of additives in the CaO matrix and the relatively high surface area materials obtained via USP explain the sorbent's high performance. All materials were characterized by XRD, STEM, TEM, SEM, and TGA (for CO2 uptake measurements). Two common phases of CaAlxOy, Ca12Al14O 33 and Ca3Al2O6, were formed during multiple cycles of calcination and CO2 uptake.

Original languageEnglish (US)
Pages (from-to)19872-19875
Number of pages4
JournalRSC Advances
Issue number43
StatePublished - Nov 21 2013

ASJC Scopus subject areas

  • General Chemistry
  • General Chemical Engineering


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