Supported by NSFC (面上项目)
Principal Investigator: Dr. Xiaoguang Guo
Key Words: In-situ Techniques; Shape-selective; Channel confinementl; Ethylene; Mathene
Abstract: The efficient utilization of gaseous hydrocarbon resources (i.e., methane) has restricted the development of China's energy industry. The vast reserves of the resource will be converted into high-value fuels and chemicals (especially olefins), which has sparked the interest of researchers worldwide and spurred unprecedented investment. This is also an important step to improve China's energy structure. The proposal aims to fabricate a novel catalyst with single-atom Fe(Mo) center confined in a micro-mesoporous zeolite channel, which enables the direct non-oxidative conversion of methane without coke deposition and the channel-shape-selective methane to ethylene and hydrogen with high selectivity. Via a series of in situ techniques and DFT calculations, we will further explore and reveal the stucture of active sites, chain-growth mechanism of products and rate-determined steps in the direct conversion of methane to ethylene over a catalyst with single-atom Fe(Mo) center confined in a micro-mesoporous zeolite channel. Furthermore, we will recognize and understand the effect of shape selectivity of zeolite channel on the rational conversion of methane to ethylene with high selectivity. The proposal will provide reliable experimental evidence and theoretical guidance for the novel process of direct non-oxidative methane to ethylene and hydrogen. This will further enrich and develop the theoretical basis of direct non-oxidative conversion of methane to ethylene, and promote the practical chemical utilization of natural gas and shale gas.
Project Number: 21473185 (2015.8-2018.12)