"Atomically Precise Catalysis Studies with CLS Synchrotron for Sustainable, Efficient, and Environmentally-Friendly Chemical Processes"

催化化学反应过程在能源化工生产和环境保护技术中发挥着重要作用。催化化学反应过程的核心是催化剂。更可持续、更高效、更环保的化学反应过程需要尖端科学研究，这将导致催化剂材料开发的突破，其中使用强大的同步辐射光源更好地从原子上精确地理解催化现象是必不可少的。这项建议提出了几个持续的和启动的项目或方向，H.Wang的研究小组将在未来5年内继续追求。 第一个项目是在应用方面的其他资金的帮助下，在CLS(加拿大光源)建立原位原子精确表征催化材料和催化反应的研究设施。可能使用的光束线有硬X射线微区分析(HXMA)和软X射线微区表征光束线(SXRMBLE)。还实现了XANES(X射线吸收近边结构)和EXAFS(扩展X射线吸收精细结构)等光谱分析工具。第二个方向是研究用于甲烷二氧化碳重整、木质生物质转化和甘油重整等反应的镍基催化剂。利用同步加速器研究设备，将研究这些反应中镍催化剂上碳生成机制的相似性；并将找到常见催化失活的解决方案。三是发展硫化氢裂解循环中的催化反应，特别是催化裂解反应。用于油砂沥青改质的可持续制氢工艺的本森反应。四是利用原子层沉积法制备内照光催化剂。 在CLS建立现场催化研究设施不仅将使该计划受益，而且将使加拿大的催化社区受益。该项目包括培训2名博士生，2名硕士研究生，2名在王教授指导下的博士后研究员，以及其他前来访问CLS设施的人。

Catalytic chemical reaction processes play important roles in energy and chemical productions and environment protection technologies. The core of a catalytic chemical reaction process is the catalyst. The advances towards more sustainable, more efficient, and more environmentally-friendly chemical reaction processes need edge-cutting scientific research which leads to breakthrough in development of catalyst materials, where better atomically-precise understanding of catalytic phenomena using powerful synchrotron light source is essential. This proposal suggests a few continuing and initiating projects or directions that H. Wang's research group will pursue in the coming 5-year period of time. The first project is to build research facilities of in situ atomically-precise characterization of catalytic materials and catalytic reactions at the CLS (Canadian Light Source) with the help of other funds in applications. The beamlines possibly to use are HXMA (hard X-ray microanalysis) and SXRMB (soft X-ray microcharacterization beamline). Spectrum analysis tools such as XANES (X-ray absorption near-edge structure) and EXAFS (extended X-ray absorption fine structure) are also implemented. The second direction is to study the Ni-based catalysts for reactions such as CO2 reforming of methane, woody biomass conversions, and glycerol reforming. The similarity of the mechanism of carbon formation on Ni catalysts in these reactions will be investigated using synchrotron research facilities; and solutions to the common catalytic deactivation are to be discovered. The third is to develop the catalytic reactions in H2S splitting cycle, esp. the Bunsen reaction for a sustainable H2 production process for oil sand bitumen upgrading. And the fourth is to develop the internal-illuminated photocatalysts using the atomic layer deposition method. The establishment of the in situ catalysis research facilities at the CLS will benefit not only this program but the catalysis community in Canada. This program includes the training of 2 PhD students, 2 MSc students, 2 postdoctoral fellows under Wang's supervision, and others who come to access the facility at the CLS.