Investigating New Frontiers of Catalytic Ozonation for Air Pollution Control

研究空气污染控制催化臭氧化的新领域

• 批准号: RGPIN-2019-05101
• 负责人: Rezaei, Ebrahim
• 金额: $ 2.04万
• 依托单位: Lakehead University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2019
• 资助国家: 加拿大
• 起止时间: 2019-01-01 至 2020-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=682489
• 关键词: Investigating; New; Frontiers; Catalytic; Ozonation

***Air pollution control is one of the major challenges of the industrialized world. Traditionally, air pollution referred to outdoor air pollution. However, people now spend more time in enclosed environments such as residential/commercial buildings and business offices that exposes them to indoor air pollutants, causing sick building syndrome (SBS). The focus of this research is to mitigate indoor and outdoor air pollution using ozone. Ozone is a reactive molecule which enables the removal of a wide range of air pollutants. When activated by catalysts, ozone oxidizes hazardous air pollutants to harmless products. ******The proposed research will investigate novel catalytic systems for the oxidation of volatile organic compounds (VOCs), which are the main contributors to indoor air pollution. It will also study innovative solutions for the removal of two outdoor air pollutants, NO and NH3, from industrial emissions. This research program will yield new materials and enhanced technological processes to reduce air pollution. ******The first objective of this research is to formulate stable catalysts that can oxidize indoor VOCs to CO2 without deactivation at room temperature. Currently, available catalysts deactivate due to the accumulation of reaction intermediates on their surface. Metal organic frameworks (MOFs) and core-shell structures are new families of materials that allow designing catalysts with tailored properties. Active and stable catalysts will be developed based on Mn, Ag, Pt, and Pd confined in silica shells and MOFs containing In, Fe, and Cr. These engineered materials will make it possible to achieve desired properties to hinder the deactivation of catalysts by efficiently contacting VOCs and ozone. The findings of this research will help develop indoor air purifying units, benefitting Canadians by eliminating health problems related to SBS. ******The second objective of this research is to develop catalysts for selective ozonation of NO to produce NO2 and N2O5, to enhance the efficiency of selective catalytic reduction (SCR) reactors and wet scrubbers for the removal of NOx (mixture of NO and NO2) from flue gas. Catalysts based on manganese oxides will be tested for the oxidation of NO. The third objective of this research is to selectively decompose NH3 to produce N2 by catalytic ozonation near ambient temperatures. Pt, Ru, Cu, Fe, Mn, and Ag catalysts will be tested to identify the most active metals. NH3 and NOx emitting industries such as agriculture, power generation, transportation, and petroleum sectors will benefit significantly from this research program. ******This research will lead to the development of catalysts that are more efficient with optimized process conditions through increased reaction rates that will improve air quality. Highly qualified personnel will be trained in reaction engineering, catalysis, and surface science. The proposed research program will provide Canadians with improved air quality. ********

* 空气污染控制是工业化世界的主要挑战之一。传统上，空气污染指的是室外空气污染。然而，人们现在花更多的时间在封闭的环境中，如住宅/商业建筑和商业办公室，使他们暴露在室内空气污染物中，导致病态建筑综合症（SBS）。本研究的重点是利用臭氧减轻室内和室外空气污染。臭氧是一种活性分子，可以去除各种空气污染物。当被催化剂激活时，臭氧将有害的空气污染物氧化成无害的产品。** 拟议的研究将调查用于氧化挥发性有机化合物（VOC）的新型催化系统，这是室内空气污染的主要原因。它还将研究从工业排放物中去除两种室外空气污染物NO和NH3的创新解决方案。这项研究计划将产生新材料和增强的技术流程，以减少空气污染。** 本研究的第一个目标是配制稳定的催化剂，可以在室温下将室内VOCs氧化为CO2而不会失活。目前，可用的催化剂由于反应中间体在其表面上的积累而失活。金属有机骨架（MOF）和核-壳结构是允许设计具有定制性质的催化剂的新材料家族。活性和稳定的催化剂将开发的基础上锰，银，铂，钯限制在二氧化硅壳和MOFs含有In，Fe和Cr。这些工程材料将使其能够实现所需的性能，以通过有效地接触VOC和臭氧来阻止催化剂的失活。这项研究的结果将有助于开发室内空气净化装置，通过消除与SBS相关的健康问题使加拿大人受益。** 本研究的第二个目标是开发用于选择性臭氧化NO以产生NO2和N2 O 5的催化剂，以提高选择性催化还原（SCR）反应器和湿式洗涤器去除烟气中NOx（NO和NO2的混合物）的效率。基于锰氧化物的催化剂将被测试用于NO的氧化。本研究的第三个目标是通过在环境温度附近催化臭氧化来选择性地分解NH3以产生N2。将对Pt、Ru、Cu、Fe、Mn和Ag催化剂进行测试，以确定活性最高的金属。NH3和NOx排放行业，如农业，发电，运输和石油部门将从这项研究计划中受益匪浅。** 这项研究将导致催化剂的开发，通过提高反应速率，改善空气质量，优化工艺条件，提高效率。高素质的人员将接受反应工程、催化和表面科学方面的培训。拟议的研究计划将为加拿大人提供改善的空气质量。********