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. 2018 Sep 24;23(10):2442. doi: 10.3390/molecules23102442

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© 2018 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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Hydrogenation rates of acetylene (black) and ethylene (shaded green): 1—Pd/TiO₂, 2—Pd/TiO₂ with 3‰ CO in feed, 3—PPh₃ 2.5 Pd/TiO₂ (reproduced with permission from [263]. Copyright 2015, the Royal Society of Chemistry).