Spectroscopic investigations of hydrocarbon transformations in zeolites

沸石中烃转化的光谱研究

• 批准号: 2608154
• 金额: --
• 依托单位: University of Glasgow
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2021
• 资助国家: 英国
• 起止时间: 2021 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2608154
• 关键词: Spectroscopic; investigations; hydrocarbon; transformations; zeolites

The project will look at deactivation of zeolite catalysts utilised in a range of hydrocarbon transformations, e.g. (i) the methanol-to-olefin reaction and (ii) the up-grading of olefin production at fluidised catalytic cracking (FCC) operations. Initial work will make use of a catalyst test facility located at the University of Glasgow that will be used to characterise industrial grade zeolites under regimes of steady-state operation and deactivation. Subsequent neutron studies will use INS to define the nature and form of reagents/products retained within the zeolite pore network. QENS will provide information on the diffusion characteristics of reagents/products, as well as suitably selected probe molecules. The QENS outcomes will be compared against MD based simulations to better understand the dynamics of substrate/adsorbate interactions that, ultimately, dictate selectivity profiles and catalyst lifetime. Moreover, the suitability of recent advances in neutron imaging techniques to evaluate catalyst deactivation/regeneration strategies will also be explored.

该项目将研究一系列碳氢化合物转化中使用的沸石催化剂的失活，例如(i) 甲醇制烯烃反应和 (ii) 流化催化裂化 (FCC) 操作中烯烃生产的升级。初步工作将利用位于格拉斯哥大学的催化剂测试设施，该设施将用于表征稳态操作和失活状态下的工业级沸石。随后的中子研究将使用 INS 来定义保留在沸石孔隙网络内的试剂/产品的性质和形式。 QENS 将提供有关试剂/产品的扩散特性以及适当选择的探针分子的信息。 QENS 结果将与基于 MD 的模拟进行比较，以更好地了解底物/吸附物相互作用的动态，最终决定选择性分布和催化剂寿命。此外，还将探讨中子成像技术的最新进展对评估催化剂失活/再生策略的适用性。