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Butane Dry Reforming Catalyzed by Cobalt Oxide Supported on Ti2 AlC MAX Phase.
ChemSusChem ( IF 7.5 ) Pub Date : 2020-09-18 , DOI: 10.1002/cssc.202001633 Maria Ronda-Lloret 1 , Vijaykumar S Marakatti 2 , Willem G Sloof 3 , Juan José Delgado 4 , Antonio Sepúlveda-Escribano 5 , Enrique V Ramos-Fernandez 5 , Gadi Rothenberg 1 , N Raveendran Shiju 1
ChemSusChem ( IF 7.5 ) Pub Date : 2020-09-18 , DOI: 10.1002/cssc.202001633 Maria Ronda-Lloret 1 , Vijaykumar S Marakatti 2 , Willem G Sloof 3 , Juan José Delgado 4 , Antonio Sepúlveda-Escribano 5 , Enrique V Ramos-Fernandez 5 , Gadi Rothenberg 1 , N Raveendran Shiju 1
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MAX (Mn+1AXn) phases are layered carbides or nitrides with a high thermal and mechanical bulk stability. Recently, it was shown that their surface structure can be modified to form a thin non‐stoichiometric oxide layer, which can catalyze the oxidative dehydrogenation of butane. Here, the use of a Ti2AlC MAX phase as a support for cobalt oxide was explored for the dry reforming of butane with CO2, comparing this new catalyst to more traditional materials. The catalyst was active and selective to synthesis gas. Although the surface structure changed during the reaction, the activity remained stable. Under the same conditions, a titania‐supported cobalt oxide catalyst gave low activity and stability due to the agglomeration of cobalt oxide particles. The Co3O4/Al2O3 catalyst was active, but the acidic surface led to a faster deactivation. The less acidic surface of the Ti2AlC was better at inhibiting coke formation. Thanks to their thermal stability and acid‐base properties, MAX phases are promising supports for CO2 conversion reactions.
中文翻译：
Ti2 AlC MAX 相负载的氧化钴催化丁烷干重整。
MAX (Mn +1 AX n )相是层状碳化物或氮化物，具有较高的热稳定性和机械稳定性。最近，研究表明可以修改它们的表面结构以形成薄的非化学计量氧化物层，该氧化物层可以催化丁烷的氧化脱氢。在此，探索了使用Ti 2 AlC MAX 相作为氧化钴载体用于丁烷与CO 2的干重整，并将这种新催化剂与更传统的材料进行了比较。该催化剂活性高，对合成气有选择性。尽管反应过程中表面结构发生变化，但活性保持稳定。在相同条件下，二氧化钛负载的氧化钴催化剂由于氧化钴颗粒的团聚而表现出较低的活性和稳定性。Co 3 O 4 /Al 2 O 3催化剂具有活性，但酸性表面导致更快的失活。Ti 2 AlC 的酸性较低的表面能够更好地抑制焦炭形成。由于其热稳定性和酸碱特性，MAX 相有望成为 CO 2转化反应的载体。
更新日期：2020-09-18
中文翻译：
Ti2 AlC MAX 相负载的氧化钴催化丁烷干重整。
MAX (Mn +1 AX n )相是层状碳化物或氮化物，具有较高的热稳定性和机械稳定性。最近，研究表明可以修改它们的表面结构以形成薄的非化学计量氧化物层，该氧化物层可以催化丁烷的氧化脱氢。在此，探索了使用Ti 2 AlC MAX 相作为氧化钴载体用于丁烷与CO 2的干重整，并将这种新催化剂与更传统的材料进行了比较。该催化剂活性高，对合成气有选择性。尽管反应过程中表面结构发生变化，但活性保持稳定。在相同条件下，二氧化钛负载的氧化钴催化剂由于氧化钴颗粒的团聚而表现出较低的活性和稳定性。Co 3 O 4 /Al 2 O 3催化剂具有活性，但酸性表面导致更快的失活。Ti 2 AlC 的酸性较低的表面能够更好地抑制焦炭形成。由于其热稳定性和酸碱特性，MAX 相有望成为 CO 2转化反应的载体。
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