Concept explainers
Solar Chemical Energy Storage. The major ways to utilize, capture, or store the sun’s energy are solar thermal (see P8-16B), solar voltaic, biomass conversion, solar water splitting (P10-13B), and solar chemical. Solar chemical refers to processes that harness and store solar energy by adsorbing light in a reversible chemical reaction; see http://en.wikipedia.org/wiki/Solar_chemical. For example, the photodimerization of anthracene absorbs and stores solar energy that can be released when the reverse reaction takes place.
Figure P3-15.1 Anthracene dimerization.
Another reaction of interest is the Norbornadiene–Quadricyclane (NQ) couple, where solar energy is adsorbed and stored in one direction and released in the other.
Figure P3-15.2 The Norbornadiene–Quadricyclane (NQ) couple is of potential interest for sunlight energy storage.
- (a) Suggest a rate law for the reversible photodimerization of anthracene.
- (b) Suggest a rate law for the reversible storage of energy by the NQ couple.
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Elements of Chemical Reaction Engineering (5th Edition) (Prentice Hall International Series in the Physical and Chemical Engineering Sciences)
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