Solar-chemical energy conversion via reversible liquid phase Diels-Alder reactions. Final technical report
Thermochemical energy conversion at moderate or low temperature (< about 400/sup 0/C) employing liquid phase components throughout a cycle is suggested as a promising concept for high-efficiency conversion of solar energy to a convenient chemical form. In particular, we propose liquid phase Diels-Alder cycloaddition chemistry as an important class of reversible reactions for such low or moderate temperature thermochemical energy conversion systems. One of the important attributes of thermally driven Diels-Alder reactions is their concerted mechanism, with consequent high yields and efficiencies relative to liquid photochemical systems. Since the systems we propose involve organic species, with thermal stability concerns about 400/sup 0/C, it is important to demonstrate equilibrium shift capability for the highly energetic reactions sought. We have therefore carried out experimental studies with model liquid Diels-Alder systems that clearly demonstrate the degree of control over equilibrium available through substituent entropy effects. These results are of importance as regards subsequent systematic identification of Diels-Alder reactions having ideal thermochemical and physical properties.
- Research Organization:
- Colorado State Univ., Fort Collins (USA)
- DOE Contract Number:
- FG02-79ER10543
- OSTI ID:
- 5423276
- Report Number(s):
- DOE/ER/10543-T1; ON: DE84005246
- Resource Relation:
- Other Information: Portions are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
DIELS-ALDER REACTION
THERMODYNAMICS
SOLAR ENERGY CONVERSION
THERMOCHEMICAL PROCESSES
ANTHRACENE
EQUILIBRIUM
HEAT EXCHANGERS
LIQUID COLUMN CHROMATOGRAPHY
STABILITY
THERMOCHEMICAL HEAT STORAGE
AROMATICS
CHEMICAL REACTIONS
CHROMATOGRAPHY
CONDENSED AROMATICS
CONVERSION
ENERGY CONVERSION
ENERGY STORAGE
HEAT STORAGE
HYDROCARBONS
ORGANIC COMPOUNDS
SEPARATION PROCESSES
STORAGE
140505* - Solar Energy Conversion- Photochemical
Photobiological
& Thermochemical Conversion- (1980-)
142000 - Solar Energy- Heat Storage- (1980-)
400301 - Organic Chemistry- Chemical & Physicochemical Properties- (-1987)