Ti3AlC2 MAX phase as an efficient catalyst for oxidative dehydrogenation of n-butane

Ng, Wesley H. K. and Gnanakumar, Edwin S. and Batyrev, Erdni and Sharma, Sandeep K. and Pujari, Pradeep K. and Greer, Heather F. and Zhou, Wuzong and Sakidja, Ridwan and Rothenberg, Gadi and Barsoum, Michel W. and Raveendran, Shiju (2018) Ti3AlC2 MAX phase as an efficient catalyst for oxidative dehydrogenation of n-butane. Angewandte Chemie International Edition, 57 (6). pp. 1485-1490. ISSN 1433-7851

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Abstract Dehydrogenation or oxidative dehydrogenation (ODH) of alkanes to produce alkenes directly from natural gas/shale gas is gaining in importance. Ti3AlC2, a MAX phase, which hitherto had not been used in catalysis, efficiently catalyzes the ODH of n-butane to butenes and butadiene, which are important intermediates for the synthesis of polymers and other compounds. The catalyst, which combines both metallic and ceramic properties, is stable for at least 30?h on stream, even at low O2:butane ratios, without suffering from coking. This material has neither lattice oxygens nor noble metals, yet a unique combination of numerous defects and a thin surface Ti1?yAlyO2?y/2 layer that is rich in oxygen vacancies makes it an active catalyst. Given the large number of compositions available, MAX phases may find applications in several heterogeneously catalyzed reactions.

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Journal Article
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Angewandte Chemie International Edition
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21 Jul 2020 10:30
Last Modified:
19 Sep 2023 02:28