Scheme 12.1 CCU: Technologies and products. Thermal routes to chemicals are in the bluish
frame, all other options are based on the use of solar energy either for making electrons or for
direct photochemical conversion. Reprinted/adapted from Ref. [1], Copyright 2019 by permission
of Springer
Scheme 12.2 Perspective use of CO 2 that can be converted into chemicals and fuels. Short term:
5–7 y; Medium term: 8–12 y; Long term: 15+ y. Reprinted/adapted from Ref. [1], Copyright 2019
by permission of Springer
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12 The CO 2 Revolution