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Highly Effective Direct Dehydrogenation of Propane to Propylene by Microwave Catalysis at Low Temperature over Co−Sn/NC Microwave Catalyst
ChemCatChem ( IF 4.5 ) Pub Date : 2020-11-24 , DOI: 10.1002/cctc.202001640
Qige Wang 1 , Wentao Xu 1, 2 , Zhongchen Ma 1 , Fei Yu 1 , Yi Chen 1 , Huanyu Liao 1 , Xianyou Wang 3 , Jicheng Zhou 1, 2
Affiliation  

The direct catalytic dehydrogenation of propane (C3H8) to value‐added propylene (C3H6) has attracted much attention. However, direct dehydrogenation of C3H8 to C3H6 with outstanding catalytic performance at low temperature is a great challenge. Herein, we report a new approach for the direct dehydrogenation of C3H8 to C3H6 at low temperature by microwave catalysis over non‐precious Co−Sn/NC microwave catalyst. It is found that the microwave direct catalytic dehydrogenation of C3H8 over Co−Sn/NC microwave catalyst at low temperature (450 °C) is highly efficient. The C3H8 conversion is 15 % and the C3H6 selectivity is 75 % at 450 °C. Comparatively, the C3H8 conversion and C3H6 selectivity were respectively only 3.2 % and 67.8 % for Co−Sn/NC catalyst at 450 °C in the conventional reaction mode under identical conditions. Furthermore, the microwave catalyst does not show visible change after tested for 180 min. Importantly, the apparent activation energy of Co−Sn/NC catalyst drop from 59.58 kJ/mol in the conventional reaction mode to 20.98 kJ/mol in microwave catalytic reaction mode, which suggests a significant microwave direct catalytic effect. This work provides a novel approach for highly effective direct dehydrogenation of C3H8 to C3H6 by microwave irradiation at low temperature.

中文翻译:

Co-Sn / NC微波催化剂在低温下通过微波高效催化丙烷直接脱氢为丙烯

丙烷(C 3 H 8)直接催化脱氢为增值丙烯(C 3 H 6)引起了广泛的关注。但是,在低温下具有出色的催化性能的C 3 H 8直接脱氢为C 3 H 6是一个巨大的挑战。在此,我们报道了一种在非贵金属Co-Sn / NC微波催化剂上通过微波催化在低温下将C 3 H 8直接脱氢为C 3 H 6的新方法。发现微波直接催化C 3 H 8脱氢Co-Sn / NC微波催化剂在低温(450°C)时效率很高。在450°C下,C 3 H 8的转化率为15%,C 3 H 6的选择性为75%。比较而言,C 3 H 8转化率和C 3 H 6在相同条件下,常规反应模式下,在450°C下,Co-Sn / NC催化剂的选择性分别仅为3.2%和67.8%。此外,微波催化剂在测试180分钟后没有显示出可见的变化。重要的是,Co-Sn / NC催化剂的表观活化能从常规反应模式下的59.58 kJ / mol降至微波催化反应模式下的20.98 kJ / mol,这表明微波直接催化作用显着。这项工作为通过低温微波辐射将C 3 H 8高效直接脱氢为C 3 H 6提供了一种新方法。
更新日期:2020-11-24
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