The Ti3 AlC2 MAX Phase as an Efficient Catalyst for Oxidative Dehydrogenation of n-Butane.,Angewandte Chemie International Edition

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The Ti3 AlC2 MAX Phase as an Efficient Catalyst for Oxidative Dehydrogenation of n-Butane.
Angewandte Chemie International Edition ( IF 16.1 ) Pub Date : 2018-01-09 , DOI: 10.1002/anie.201702196
Wesley H K Ng ₁ , Edwin S Gnanakumar ₁ , Erdni Batyrev ₂ , Sandeep K Sharma ₃ , Pradeep K Pujari ₃ , Heather F Greer ₄ , Wuzong Zhou ₄ , Ridwan Sakidja ₅ , Gadi Rothenberg ₁ , Michel W Barsoum ₆ , N Raveendran Shiju ₁

Affiliation

Dehydrogenation or oxidative dehydrogenation (ODH) of alkanes to produce alkenes directly from natural gas/shale gas is gaining in importance. Ti3 AlC2 , 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-y Aly O2-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.

中文翻译：

Ti3 AlC2 MAX 相作为正丁烷氧化脱氢的有效催化剂。

烷烃脱氢或氧化脱氢 (ODH) 直接从天然气/页岩气生产烯烃的重要性日益增加。 Ti3 AlC2 是迄今为止尚未用于催化的 MAX 相，可有效催化正丁烷的 ODH 生成丁烯和丁二烯，而丁烯和丁二烯是合成聚合物和其他化合物的重要中间体。该催化剂结合了金属和陶瓷特性，即使在低 O2: 丁烷比的情况下，也能稳定运行至少 30 小时，而不会结焦。这种材料既没有晶格氧，也没有贵金属，但众多缺陷的独特组合和富含氧空位的薄表面 Ti1-y Aly O2-y/2 层使其成为活性催化剂。鉴于可用的组合物数量众多，MAX 相可能会在多种非均相催化反应中得到应用。

更新日期：2018-01-09

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