Superior catalytic performance of alloyed NiCo catalyst for DRM

Elucidating the impact of Ni and Co loading on the selectivity of bimetallic NiCo catalysts for dry reforming of methane
Catalytic performance of various bimetallic ratios of Ni and Co on an Al2O3 support

With limited fuel reserves and increasing concentrations of atmospheric CO2, the conversion of CO2 into valuable products is of ever increasing importance. The process of methane dry reforming (also known as CO2 reforming) offers a potential pathway to achieve this, with CH4and CO2 being converted to synthesis gas. A factor which is often overlooked when assessing dry reforming catalysts is selectivity. To be considered viable in dry reforming, a catalyst must not only be highly active and stable but also display a strong selectivity towards synthesis gas products. This work reports the catalytic performance from the perspective of selectivity of various bimetallic ratios of Ni and Co on an Al2O3 support (prepared via flame spray pyrolysis (FSP). Coupling the Ni and Co allowed for both the activity of Ni and the resistance of Co to deactivation (via carbon formation) to be captured, with the extent governed by the ratio of the two metals. We also assess the catalyst selectivity towards the three side reactions (Boudouard, methane cracking and RWGS) known to occur during the DRM.

Graphical Abstract of Chem Eng Journal (2018), vol 352

Read the full article in Chem. Eng Journal, 2018, https://www.sciencedirect.com/science/article/pii/S1385894718312415#f0045