(430b) Low-Carbon Solution to Xtl&c and Its Progress of Key Technologies

As the coal-rich country, coal or other carbon resources to liquid fuel and chemicals (XTL&C) sounds to be highly predominant in China, in particular their production at the scenario of low-carbon foot-print. Thus, low-carbon solution via hybrid energy system is being investigated from both geographical and sector view, and then key technologies R&D are carried out in terms of green carbon science. As a result, CO₂/CO utilization, as the central part of C1 chemistry, becomes one of the most severe challenges for human society nowadays. During the utilization of carbon-based resources, CO is the important intermediate molecules, but CO₂ is the end-product indicating the use-up of carbon energy. Among them, syngas to fuel and chemicals via FTS has attracted the attention from fundamental research to industrial deployment.

In chemistry, CO₂ utilization plays a role to complete the redox cycle, which is intrinsically redox reactions in nature. Charge transfer is the key step for the occurrence of the reactions. Moreover, charge transfer capability is critical for developing the related catalytic materials. As for CO utilization, the selective control becomes the key issue for syngas conversion into fuels or chemicals. Herein, nano/sub-nano catalysis plays a key role in the development of new technologies for CO₂ and CO utilization, and four key factors play the key role for selective catalysis, i.e. size, surface, surrounding and scale. Reaction network during syngas conversion concerning CO₂ and CO utilization demonstrate the importance of C-O bond activation by nano/sub-nano catalysis with respect to the factors above mentioned.

Based on those fundamental research concerning the nature of active site, reaction network and structure-performance relationship, both catalysts and process are being developed for XTL&C with non-ASF product distribution from tunable syngas composition via multiple methane reforming.