Increased clinker substitution with blast furnace slag (BFS) (up to 16% by 2030, 20% by 2050). LEDS. 0.04%. 28.7. $10.19. 11. Decomposition of N2O emissions through use of a secondary catalyst. Selective De-N2O catalyst results in abatement of approximately 75% of all N2O emissions produced during nitric acid production.