In situ XRD and PDF study of the model cobalt-based Fischer-Tropsch catalysts sintering under industrial conditions

This proposal aims to study the well-defined cobalt-based FT catalysts, with particular attention to the cobalt particle sintering, their crystallographic structure, chemical coordination environment, and the impact of supporting material at the conditions relevant to industrial FT synthesis, including elevated temperatures, pressures, and specific gas compositions, using synchrotron X-ray techniques: wide-angle X-ray scattering (WAXS) and pair distribution function (PDF), used for operando studies of cobalt nanoparticles during FTS.

本研究提案旨在针对结构明确的钴基费托（Fischer-Tropsch, FT）催化剂开展系统性研究，重点关注钴颗粒烧结行为、晶体结构与化学配位环境，同时探究载体材料在涵盖高温、高压及特定气体组成的工业费托合成（Fischer-Tropsch Synthesis, FTS）相关工况下的影响。本研究将采用同步辐射X射线技术——广角X射线散射（wide-angle X-ray scattering, WAXS）与对分布函数（pair distribution function, PDF）——开展费托合成过程中钴纳米颗粒的原位动态（operando）表征。