Compositions and methods of preparing the compositions are disclosed for sorbents and other surfaces that can adsorb and desorb carbon dioxide. A sorbent or surface can include a metal compound such as an alkali or alkaline earth compound and a support. The sorbent can be prepared by several methods, including an incipient wetness technique. The sorbents have a CO.sub.2 adsorption and desorption profile. A sorbent having high levels of a metal compound and adsorbed CO.sub.2 is disclosed.
STATEMENT OF FEDERALLY SPONSORED RESEARCH
 Portions of this disclosure were made with Government support under Grant Number DE-NT0005497, awarded by The Department of Energy. The Government may have certain rights in the disclosure.