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Title: Solar reduction of CO{sub 2}

Abstract

The red shift of the absorption spectrum of CO{sub 2} with increasing temperature permits the use of sunlight to photolyze CO{sub 2} to CO. The process of the present invention includes: preheating CO{sub 2} to near 1800 K; exposing the preheated CO{sub 2} to sunlight, whereby CO, O{sub 2} and O are produced; and cooling the hot product mix by rapid admixture with room temperature CO{sub 2}. The excess thermal energy may be used to produce electricity and to heat additional CO{sub 2} for subsequent process steps. The product CO may be used to generate H{sub 2} by the shift reaction or to synthesize methanol.

Inventors:
; ; ;
Publication Date:
Research Org.:
LANL (Los Alamos National Laboratory (LANL), Los Alamos, NM (United States))
Sponsoring Org.:
USDOE
OSTI Identifier:
20050816
Application Number:
Int. Cl. C10J 3/20; B01J 19/08; US 6,066,187/A/; 9-034,873; TRN: IM200024%%327
Assignee:
LANL; EDB-00:033422
DOE Contract Number:  
W-7405-ENG-36
Resource Type:
Patent
Resource Relation:
Other Information: PBD: 23 May 2000
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; 54 ENVIRONMENTAL SCIENCES; 08 HYDROGEN; 10 SYNTHETIC FUELS; CARBON DIOXIDE; PHOTOLYSIS; SOLAR RADIATION; WASTE HEAT UTILIZATION; CARBON MONOXIDE; WASTE PRODUCT UTILIZATION; HYDROGEN PRODUCTION; METHANOL

Citation Formats

Jensen, R.J., Lyman, J.L., King, J.D., and Guettler, R.D. Solar reduction of CO{sub 2}. United States: N. p., 2000. Web.
Jensen, R.J., Lyman, J.L., King, J.D., & Guettler, R.D. Solar reduction of CO{sub 2}. United States.
Jensen, R.J., Lyman, J.L., King, J.D., and Guettler, R.D. Tue . "Solar reduction of CO{sub 2}". United States.
@article{osti_20050816,
title = {Solar reduction of CO{sub 2}},
author = {Jensen, R.J. and Lyman, J.L. and King, J.D. and Guettler, R.D.},
abstractNote = {The red shift of the absorption spectrum of CO{sub 2} with increasing temperature permits the use of sunlight to photolyze CO{sub 2} to CO. The process of the present invention includes: preheating CO{sub 2} to near 1800 K; exposing the preheated CO{sub 2} to sunlight, whereby CO, O{sub 2} and O are produced; and cooling the hot product mix by rapid admixture with room temperature CO{sub 2}. The excess thermal energy may be used to produce electricity and to heat additional CO{sub 2} for subsequent process steps. The product CO may be used to generate H{sub 2} by the shift reaction or to synthesize methanol.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2000},
month = {5}
}