STTR Phase I: Metal Oxide Nanofibers for Filter and Catalyst Support Structures

STTR 第一阶段：用于过滤器和催化剂支撑结构的金属氧化物纳米纤维

• 批准号: 0637539
• 负责人: Gary Carlson
• 金额: --
• 依托单位: MemPro Ceramics Corporation
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-01-01 至 2008-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0637539&HistoricalAwards=false
• 关键词: STTR; Phase; Metal; Oxide; Nanofibers

The Small Business Technology Transfer Research (STTR) Phase I project will intersperse ceramic nanofibers made from a three-step electrospinning/coating/decomposing process into an array of ceramic microfibers for filtering hot gases up to 1800C , while retaining structural integrity. The ceramic nanofibers offer significant improvements in particulate capture efficiency with moderate increases in pressure drop for gas filtration compared to typical monolithic or granular structures. In addition, the high surface area of the nanofibers provides a basis for improved catalyst support structures. In this work, the microfiber-nanofiber media will be constructed, and Pd catalyst material added to the nanofibers. Catalyst performance will then be measured and compared with the perormance of current motor vehicle honeycomb catalyst. Results from this work can be subsequently used to optimize the filter design.The proposed technology will provide a relatively inexpensive method for capturing soot particles and catalyzing harmful emissions such as NOx and CO. These filters may also be combined with the catalytic converters as a single multifunctional unit to save space and weight on the automobile. Other potential applications of ceramic nanofibers with catalysts include hydrogen storage tanks and fuel cells.

小企业技术转移研究（STTR）第一阶段项目将把由三步静电纺丝/涂覆/分解工艺制成的陶瓷纳米纤维分散到陶瓷微纤维阵列中，用于过滤高达1800 ℃的热气体，同时保持结构完整性。 与典型的整体或颗粒结构相比，陶瓷纳米纤维显着提高了颗粒捕获效率，并适度增加了气体过滤的压降。 此外，纳米纤维的高表面积为改进的催化剂载体结构提供了基础。 在这项工作中，将构建微纤维介电介质，并将Pd催化剂材料添加到纳米纤维中。 然后测量催化剂性能并与当前机动车蜂窝催化剂的性能进行比较。 这项工作的结果可以随后用于优化过滤器的设计。所提出的技术将提供一种相对廉价的方法，用于捕获碳烟颗粒和催化有害排放物，如NOx和CO。这些过滤器也可以与催化转化器组合为一个单一的多功能单元，以节省汽车的空间和重量。 具有催化剂的陶瓷纳米纤维的其他潜在应用包括储氢罐和燃料电池。