介孔锰基催化剂室温去除甲醛的研究

With the improvement of people's life quality and health standards, the effective removal of indoor formaldehyde or outdoor formaldehyde has become an inevitable trend. At present, it is still a research hotspot and difficulty to prepare high-efficient, stable and low cost catalysts eliminating formaldehyde at room temperature and illustrate their structure-activity relationship and reaction mechanism. This application form refer mesoporous MnO2 based catalysts to be a potential application. The key is to change preparation methods of mesoporous MnO2 based catalysts, test catalytic activity at low temperature or room temperature for formaldehyde oxidation on the catalysts, evaluated the effect of benzene, toluene, H2S, NH3 and so on for formaldehyde catalytic oxidation, and Reveal influence rule of crystal phase structure, pore structure, active sites, low-temperature reducibility, surface oxygen species, lattice defects for catalytic properties, clarify structure-activity relationship of formaldehyde catalytic oxidation; Combined with in situ infrared characterization, analyze adsorption species on the mesoporous MnO2 based catalyst in reaction process of formaldehyde oxidation and the effects of these species, and speculate reaction mechanism of formaldehyde oxidation to provide theoretical reference for the design of formaldehyde purification catalysts with low cost, high activity and good stability and their practical applications.

随着人们生活质量和健康标准的提高，有效去除室内甲醛或削减室外甲醛产生量已成必然趋势。目前，研制高效、稳定、成本低、室温下能去除甲醛的催化剂并阐明其构效关系和反应机理仍然是研究热点和难点。本申请书提出研制具有应用潜力的介孔MnO2基催化剂，重点改进介孔MnO2基催化剂的制备方法；测试催化剂的低温或室温甲醛催化活性，考察苯、甲苯、H2S、NH3等成分对介孔MnO2基催化剂净化甲醛效率的影响；揭示晶相结构、孔结构、活性位、低温还原性、表面金属价态、表面氧物种、晶格缺陷等对催化性能的影响规律，阐明甲醛催化氧化的构效关系；结合原位红外表征手段，分析介孔MnO2基催化剂上甲醛催化反应过程表面形成的吸附物种，以及该物种对甲醛催化反应产生的影响，推测甲醛氧化的反应机理，为指导设计成本低、活性高、稳定性好的甲醛净化催化剂和技术推广应用提供理论参考依据。

随着人们生活质量和健康标准的提高，有效去除室内甲醛或削减室外甲醛产生量已成必然趋势。目前，研制高效、稳定、成本低、室温下能去除甲醛的催化剂并阐明其构效关系和反应机理仍然是研究热点和难点。本项目提出研制具有应用潜力的介孔MnO2基催化剂，重点改进介孔MnO2基催化剂的制备方法；测试催化剂的低温或室温甲醛催化活性，揭示晶相结构、孔结构、活性位、低温还原性、表面金属价态、表面氧物种、晶格缺陷等对催化性能的影 响规律，阐明甲醛催化氧化的构效关系；结合原位红外表征手段，分析介孔MnO2基催化剂上甲醛催化反应过程表面形成的吸附物种，以及该物种对甲醛催化反应产生的影响，推测甲醛氧化的反应机理，为指导设计成本低、活性高、稳定性好的甲醛净化催化剂和技术推广应用提供理论参考依据。