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. Author manuscript; available in PMC: 2016 Jun 30.
Published in final edited form as: Nature. 2015 Dec 10;528(7581):245–248. doi: 10.1038/nature16173

Extended Data Figure 4. Comparing acidity of the samples.

Extended Data Figure 4

Temperature programmed desorption of ammonia of Pt-Y/A (green) and Pt-A/Y (red) catalysts displays peaks indicating weak (at ~160 °C) and strong (at ~320 °C) acid sites present within both catalysts, with Pt-A/Y catalyst showing slightly lower peak intensity in the region of weak acid site. The total amount of ammonia desorbed was measured to be 14.3 cm3 g−1 and 14.7 cm3 g−1 STP, respectively.