SBIR Phase II: Catalytic Oxidation of Chlorofluorocarbons and Related Compounds for Pollution Abatement Applications

SBIR 第二阶段：用于污染减排应用的氯氟碳化合物和相关化合物的催化氧化

• 批准号: 9531289
• 负责人: Joseph Rossin
• 金额: $ 39.56万
• 依托单位: GUILD ASSOCIATES INC
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-06-01 至 2000-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9531289&HistoricalAwards=false
• 关键词: SBIR; Phase; II; Catalytic; Oxidation

9531289 This Small Business Innovation Research Phase II project involves the development of a monolithic oxidation catalyst to control the release of CFCs (cholorofluorocarbons) and related compounds into the environment. The release of CFCs and related compounds is believed to play a significant role in the decline in the earth's ozone layer. Compounds intended to replace CFCs, which include HFCs (hydrofluorocarbons) and HCFCs (hydrochlorofluorocarbons) also possess ozone-depleting properties. As a result, the release of these compounds must be controlled. Catalytic oxidation is a technology well suited for controlling vapor phase emissions. However, catalysts capable of oxidizing CFCs and related compounds have rapidly deactivated due to degradation of the catalyst in the harsh acid gas environment. Under the Phase I effort, the feasibility of using a Pt/m-ZrO2 catalyst was investigated. The catalyst was highly reactive and was able to destroy 1,000 ppm of R22, R113 and R134a without deactivation for over 100 hours of continuous operation. The objectives of the Phase II proposal are to first modify the catalyst formulation in an effort to maximize the reactivity and durability of the catalyst, then incorporate the catalyst into the washcoat of a monolith and evaluate the reactivity and durability of said material. To meet these objectives, key physical properties of the catalyst will be systematically varied, with selected materials being evaluated for reactivity and stability. Once optimized, monolithic catalysts will be prepared and evaluated for reactivity and durability against selected CFCs, HFCs and HCFCs over a wide range of process conditions. Based on results obtained during the Phase I effort, it is anticipated that the monolithic catalyst will possess sufficient reactivity and durability to be employed in commercial pollution abatement applications. Technologies capable of economically controlling the release of CFCs and related compounds are currently unavailable. Should the n ovel catalyst developed in this Phase II effort prove successful, economic pollution abatement systems may be designed around the catalyst to meet the needs of a wide variety of applications which include controlling plant fugitive emissions and fume abatement.

9531289 这个小型企业创新研究第二阶段项目涉及开发整体式氧化催化剂，以控制 CFC（氯氟碳化合物）和相关化合物向环境中的释放。据信，氟氯化碳和相关化合物的释放对地球臭氧层的下降起着重要作用。旨在替代 CFC 的化合物，包括 HFC（氢氟碳化物）和 HCFC（氢氯氟碳化物）也具有消耗臭氧层的特性。因此，必须控制这些化合物的释放。催化氧化是一种非常适合控制气相排放的技术。然而，能够氧化CFC和相关化合物的催化剂由于催化剂在恶劣的酸性气体环境中的降解而迅速失活。在第一阶段的努力下，研究了使用 Pt/m-ZrO2 催化剂的可行性。该催化剂具有高活性，能够破坏 1,000 ppm 的 R22、R113 和 R134a，连续运行 100 多个小时而不会失活。第二阶段提案的目标是首先修改催化剂配方，以最大限度地提高催化剂的反应性和耐久性，然后将催化剂合并到整料的修补基面涂层中，并评估所述材料的反应性和耐久性。为了实现这些目标，催化剂的关键物理性质将被系统地改变，并对所选材料的反应性和稳定性进行评估。优化后，将制备整体式催化剂，并评估其在各种工艺条件下对选定的 CFC、HFC 和 HCFC 的反应性和耐久性。根据第一阶段工作中获得的结果，预计整体式催化剂将具有足够的反应性和耐久性，可用于商业污染减排应用。 目前还没有能够经济地控制 CFC 和相关化合物释放的技术。如果第二阶段开发的新型催化剂被证明是成功的，则可以围绕该催化剂设计经济的污染减排系统，以满足各种应用的需求，包括控制工厂无组织排放和烟雾减排。