Acid-Free Nitration of Benzene and Toluene in Zeolite NaZSM-5

<table>Normalized peak integral versus time plots for (a) the consumption of N<sub>2</sub>O<sub>4</sub> (1741 cm<sup>−1</sup>) and (b) the growth of the asymmetric –NO<sub>2</sub> stretch for benzene (●), benzene-d<sub>6</sub> (▲), toluene (■), and toluene-d<sub>8</sub> (♦) at 50°C.</table>

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Figure 8

Figure 8: Acid-Free Nitration of Benzene and Toluene in Zeolite NaZSM-5 