Nanofurnaces and Microreactors for Catalysis

用于催化的纳米炉和微反应器

• 批准号: RGPIN-2022-04078
• 负责人: Braidy, Nadi
• 金额: $ 3.35万
• 依托单位: Université de Sherbrooke
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2022
• 资助国家: 加拿大
• 起止时间: 2022-01-01 至 2023-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=753784
• 关键词: Nanofurnaces; Microreactors; Catalysis; Nanofurnaces; Microreactors; Catalysis

High-temperature gas-phase catalytic reactions are ubiquitous to the chemical industries and the environment. These reactions can provide the building blocks for downstream production or can convert toxic flue gases to innocuous chemicals. Knowing that the reaction takes place at the surface of the catalyst, a large fraction of the energy is lost heating the gas, the support, and the bed. This is especially true for endothermic reactions, for which heat must be continually supplied to the bed. For exothermic reactions, the substrate, the bed, and the gas itself contribute to thermal inertia which extends the light-off delay before the reactor is operational. In this research program, we propose to use magnetic induction as an alternative to traditional heating methods. This way, the heat is administered directly to the reaction site thus providing higher energy efficiency and faster heating rates. This will be done using assemblies of nanomaterials consisting of magnetic nanoparticles, susceptible to magnetic induction heating (IH), decorated by the catalyst. In our 5-year research program, we will build on previous successes of the lab to investigate and develop the concept of nano furnaces in high-temperature gas-phase catalytic reactions. The research objectives will target several aspects of this novel catalytic process: (A) Design a new nanomaterial template for induction catalysis made of a magnetic susceptor, an inert shell (or matrix), and a catalyst within or on the shell. Their behavior during the reaction will be studied with in situ techniques which will provide precious and unique insight into the evolution of the nanostructures during operation. (B) Investigate different fixed-bed reactor designs by comparing their specific absorption rate. This theme will branch to test the possibility of using induction heating to produce carbon nanosphere by the decomposition of acetylene. (C) Simulate and model the process to support the design and the optimization of the reactor. Once the model is validated against experimental data, we aim to map the temperature and the reaction rate across the catalyst bed of IH and conventional types of reactors using a multiscale approach. The catalyst can be further optimized to improve the overall performance. With a detailed analysis of the exhaust gas, the yield, production rate, and the power consumed, we will benchmark the various induction heating configurations against equivalent reactors heated by traditional means. The research program proposes new approaches to investigate induction heated catalytic processes. This emerging field of research offers a rich variety of scientific challenges in the fields of nanomaterials engineering, reactor design, and modeling. The research program provides fertile grounds for HQP training and for innovation that can lead to more efficient types of reactors and novel pathways to produce blue hydrogen or mitigate toxic emissions.

高温气相催化反应对化学工业和环境无处不在。这些反应可以为下游生产提供基础，或者可以将有毒的烟气转化为无害的化学物质。知道反应发生在催化剂的表面，大部分能量会损失，加热气体，支撑和床。对于吸热反应尤其如此，为此，必须将热量不断地供应到床上。对于放热反应，底物，床和气体本身会导致热惯性，从而在反应堆运行之前扩展了轻延迟。在该研究计划中，我们建议将磁感应用作传统加热方法的替代方法。这样，将热量直接施用到反应部位，从而提供更高的能量效率和更快的加热速度。这将使用由磁性诱导加热（IH）组成的纳米材料组件来完成，该纳米颗粒由催化剂装饰。在我们的5年研究计划中，我们将基于实验室的先前成功，以调查和发展高温气相催化反应中纳米炉的概念。研究目标将针对这一新型催化过程的几个方面：（a）设计一种新的纳米材料模板，用于由磁性感动者，惰性壳（或基质）和壳内部或壳上的催化剂制成的诱导催化。将使用原位技术研究它们在反应过程中的行为，这将为操作过程中纳米结构的演变提供宝贵而独特的见解。 （b）通过比较其特异性吸收率来研究不同的固定床反应器设计。该主题将分支，以测试使用感应加热通过乙炔分解产生碳纳米球的可能性。 （c）模拟并建模支持反应器设计和优化的过程。一旦对实验数据进行了验证，我们的目标是使用多尺度方法绘制IH和常规反应器类型的催化床的温度和反应速率。 可以进一步优化催化剂以提高整体性能。通过对废气，产量，生产率和消耗的功率进行详细分析，我们将对通过传统手段加热的等效反应堆进行各种感应加热配置。该研究计划提出了新的方法来研究诱导加热催化过程。这个新兴的研究领域在纳米材料工程，反应堆设计和建模领域提供了各种各样的科学挑战。该研究计划为HQP培训和创新提供了肥沃的理由，这可以导致更有效的反应堆类型和新的途径，以产生蓝色氢或减轻有毒排放。