Understanding the role of surface basic sites of catalysts in CO₂ activation in dry reforming of methane: a short review

Abstract

Surface oxygen basic sites are vital to the CO2 activation in dry reforming of methane.

Elucidating the Promotional Effect of Cerium in the Dry Reforming of Methane

“…Generally, the desorption of carbon dioxide at temperatures below 200 °C can be ascribed to a weak basicity, this being the case of the 5Ni9Ce‐ and 10Ni9Ce/SBA‐15 samples which show a main peak at 175 °C and a secondary one at 90 °C. In addition to the peaks at low temperature, the 10Ni18Ce/SBA‐15 exhibits a main peak at 260 °C with a wide shoulder up to 450 °C associated to the decomposition of carbonate species in moderate basic sites [52] which is also present in 5Ni9Ce/SBA‐15. Taking into account the relative intensity of the peaks and total adsorption of CO 2 , the order in basicity can be stablished as 10Ni18Ce‐ (17.6 μmol g −1 ) >5Ni9Ce− (16.0 μmol g −1 ) >10Ni9Ce− (7.9 μmol g −1 )≫5Ni‐≈10Ni/SBA‐15 (>1 μmol g −1 ).…”

Recent developments in organocatalysed transformations of epoxides and carbon dioxide into cyclic carbonates

“…12 Reduction of carbon dioxide to carbon monoxide can be achieved by a variety of methods including electrochemically, 13 photochemically, 14 plasmatically 15 and thermally in processes such as the dry reforming of methane. 16 The carbon monoxide can then be combined with hydrogen in a Fischer-Tropsch reaction 17 to produce liquid hydrocarbons suitable for use as liquid transport fuels. This is a well-established commercial process.…”

Effects of Alkali Metals on Nickel/Alumina Catalyzed Ethanol Dry Reforming

“…CuCeZr showed the best activity and durability among the tested catalysts [17]. Lastly, Aziz and co-workers [18] reported that the coke could be removed by the gasification, and it could be enhanced by the basic site of the catalyst. C2H5OH + CO2 → 3CO + 3H2 (△H298K = + 296.7 kJ mol −1 )…”