微纳米α-Al2O3是一种重要的功能材料,因其优异的硬度、耐磨性、耐腐蚀性和高热稳定性,在表面涂层领域得到了广泛应用。随着微纳米技术的发展,微纳米级α-Al2O3作为添加剂在各涂层体系中的应用得到了深入研究,显示出其能够显著改善涂层...微纳米α-Al2O3是一种重要的功能材料,因其优异的硬度、耐磨性、耐腐蚀性和高热稳定性,在表面涂层领域得到了广泛应用。随着微纳米技术的发展,微纳米级α-Al2O3作为添加剂在各涂层体系中的应用得到了深入研究,显示出其能够显著改善涂层性能的潜力。微纳米α-Al2O3颗粒具有较大的比表面积和表面活性,能够增强涂层的机械性能,如硬度和耐磨性,同时提高涂层的耐腐蚀性和耐高温性能。微纳米α-Al2O3也是一种极优良的改性材料,其与有机硅烷、树脂等材料复合改性,既能大幅提升转化膜的应用效果,对其稳定性和耐候性也有较大的促进作用。在金属表面涂层、陶瓷涂层以及复合材料涂层中,微纳米α-Al2O3添加剂被广泛用于提高涂层的使用寿命和稳定性。此外,它在电子器件、航天航空和汽车工业等高技术领域也展现了广阔的应用前景。未来,随着表面技术的发展,微纳米α-Al2O3无铬钝化领域的市场应用将大幅增长,与其他功能性材料的协同作用和复合材料开发也将成为研究的重点。Micro-nano α-Al2O3 is an important functional material, because of its excellent hardness, wear resistance, corrosion resistance and high thermal stability, has been widely used in the field of surface coating. With the development of micro-nano technology, the application of micro-nano α-Al2O3 as an additive in various coating systems has been deeply studied, showing its potential to significantly improve coating properties. Micro-nano α-Al2O3 particles have a large specific surface area and surface activity, which can enhance the mechanical properties of the coating, such as hardness and wear resistance, while improving the corrosion resistance and high temperature resistance of the coating. Micro-nano α-Al2O3 is also an excellent modified material, and its composite modification with organosilane, resin and other materials can greatly improve the application effect of conversion film, and also has a greater role in promoting its stability and weather resistance. In metal surface coatings, ceramic coatings and composite coatings, micro-nano α-Al2O3 additives are widely used to improve the service life and stability of coatings. In addition, it also shows broad application prospects in high-tech fields such as electronic devices, aerospace and automotive industries. In the future, with the development of surface technology, the market application of micro-nano α-Al2O3 chromium-free passivation will grow significantly, and the synergy with other functional materials and the development of composite materials will also become the focus of research.展开更多
文章探讨了负载型铁基催化剂在催化合成邻溴苯胺方面的应用。邻溴苯胺是一种重要的有机中间体,广泛应用于农药、染料及医药等领域。文章首先介绍了邻溴苯胺的合成方法,包括铁粉加酸还原法、催化加氢法、催化转移氢化法以及其他还原方法...文章探讨了负载型铁基催化剂在催化合成邻溴苯胺方面的应用。邻溴苯胺是一种重要的有机中间体,广泛应用于农药、染料及医药等领域。文章首先介绍了邻溴苯胺的合成方法,包括铁粉加酸还原法、催化加氢法、催化转移氢化法以及其他还原方法。其中,催化加氢法和催化转移氢化法因其在温和条件下操作且环境友好而受到关注。随后,文章重点讨论了负载型铁基催化剂的制备与表征,包括催化剂载体(如碳材料和杂原子掺杂型材料)的选择、催化剂的活性组分以及催化剂的结构优化。最后,总结了负载型铁基催化剂在催化还原邻溴硝基苯为邻溴苯胺的过程中表现出良好的催化活性和选择性。同时,对负载型铁基催化剂在催化还原硝基化合物领域的应用前景进行展望。The application of supported iron-based catalysts in the catalytic synthesis of o-bromoaniline was explored in this review. o-Bromoaniline is an important organic intermediate widely used in the fields of pesticides, dyes, and pharmaceuticals. The synthesis methods of o-bromoaniline, including the iron powder-acid reduction method, catalytic hydrogenation, catalytic transfer hydrogenation, and other reduction methods were firstly introduced in this review. Among these, catalytic hydrogenation and catalytic transfer hydrogenation have garnered attention for their operation under mild conditions and environmental friendliness. Subsequently, the article focuses on the preparation and characterization of supported iron-based catalysts, including the selection of catalyst supports (such as carbon materials and heteroatom-doped materials), the active components of the catalysts, and the structural optimization of the catalysts. Finally, the excellent catalytic activity and selectivity exhibited by supported iron-based catalysts in the catalytic reduction of nitrobenzene to o-bromoaniline was summarized in this review. The prospects of supported iron-based catalysts in the field of catalytic reduction of nitro compounds were also looked ahead.展开更多
为设计并合成新的含磷氟键的化合物,并研究其性质,以二苯基氯化膦,苯基二氯化膦为反应物,通过简单的卤素交换反应合成两种化合物PhP(O)F2、Ph2P(O)F,并通过单晶X-射线衍射仪,1H、31P、19F NMR对其结构进行表征。同时对其进行抑菌活性筛...为设计并合成新的含磷氟键的化合物,并研究其性质,以二苯基氯化膦,苯基二氯化膦为反应物,通过简单的卤素交换反应合成两种化合物PhP(O)F2、Ph2P(O)F,并通过单晶X-射线衍射仪,1H、31P、19F NMR对其结构进行表征。同时对其进行抑菌活性筛选,发现二者对于两种革兰氏菌(大肠杆菌、金黄色葡萄球菌)均具有良好的抑菌活性,并得到了最小抑菌浓度。To design and synthesize new phosphorus-fluorine-containing compounds, and to study their properties, two compounds, PhP(O)F2 and Ph2P(O)F, were synthesized from diphenylphosphine chloride and phenylphosphorus dichloride through a simple halogen exchange reaction. Their structures were characterized by single-crystal X-ray diffraction, 1H, 31P, and 19F NMR spectroscopies. Additionally, their antibacterial activity was screened against two Gram-positive bacteria (Staphylococcus aureus) and Gram-negative bacteria (Escherichia coli), revealing that both compounds exhibited good antibacterial activity with minimum inhibitory concentrations determined.展开更多
臭氧作为一种高效且环保的氧化剂,在水处理、空气净化、医疗消毒等多个领域发挥着重要作用。传统的管式臭氧发生技术存在效率不高、稳定性差、运营成本高等缺点,限制了其在更广泛领域的应用。针对这些问题,本文重点介绍了一种新型的板...臭氧作为一种高效且环保的氧化剂,在水处理、空气净化、医疗消毒等多个领域发挥着重要作用。传统的管式臭氧发生技术存在效率不高、稳定性差、运营成本高等缺点,限制了其在更广泛领域的应用。针对这些问题,本文重点介绍了一种新型的板式臭氧发生器,该技术以其高效率、高稳定性和低运营成本等优势,在水处理行业中展现出卓越的性能。本文首先综述了臭氧的基本特性及其在水处理中的应用背景,然后详细阐述了板式臭氧发生器的工作原理、技术特点。此外,本文还探讨了板式臭氧发生器在工业废水处理、市政污水回用、饮用水深度净化等多个领域的应用实例,并对其市场前景和发展趋势进行了分析预测。最后,本文总结了板式臭氧发生器的优越性,并对其在水处理行业的应用潜力进行了展望。As an efficient and environmentally friendly oxidant, ozone plays a significant role in various fields such as water treatment, air purification, and medical disinfection. Traditional ozone generation technologies suffer from drawbacks such as low efficiency, poor stability, and high operational costs, which limit their broader application. This paper focuses on introducing a new type of plate-type ozone generator, which demonstrates excellent performance in the water treatment industry with its advantages of high efficiency, high stability, and low operational costs. The paper begins with a review of the basic properties of ozone and its application background in water treatment, then elaborates on the working principle and technical features of the plate-type ozone generator. Furthermore, the paper explores application examples of the plate-type ozone generator in industrial wastewater treatment, municipal sewage reuse, and deep purification of drinking water, and analyzes and forecasts its market prospects and development trends. Finally, the paper summarizes the advantages of the plate-type ozone generator and looks forward to its application potential in the water treatment industry.展开更多
文摘微纳米α-Al2O3是一种重要的功能材料,因其优异的硬度、耐磨性、耐腐蚀性和高热稳定性,在表面涂层领域得到了广泛应用。随着微纳米技术的发展,微纳米级α-Al2O3作为添加剂在各涂层体系中的应用得到了深入研究,显示出其能够显著改善涂层性能的潜力。微纳米α-Al2O3颗粒具有较大的比表面积和表面活性,能够增强涂层的机械性能,如硬度和耐磨性,同时提高涂层的耐腐蚀性和耐高温性能。微纳米α-Al2O3也是一种极优良的改性材料,其与有机硅烷、树脂等材料复合改性,既能大幅提升转化膜的应用效果,对其稳定性和耐候性也有较大的促进作用。在金属表面涂层、陶瓷涂层以及复合材料涂层中,微纳米α-Al2O3添加剂被广泛用于提高涂层的使用寿命和稳定性。此外,它在电子器件、航天航空和汽车工业等高技术领域也展现了广阔的应用前景。未来,随着表面技术的发展,微纳米α-Al2O3无铬钝化领域的市场应用将大幅增长,与其他功能性材料的协同作用和复合材料开发也将成为研究的重点。Micro-nano α-Al2O3 is an important functional material, because of its excellent hardness, wear resistance, corrosion resistance and high thermal stability, has been widely used in the field of surface coating. With the development of micro-nano technology, the application of micro-nano α-Al2O3 as an additive in various coating systems has been deeply studied, showing its potential to significantly improve coating properties. Micro-nano α-Al2O3 particles have a large specific surface area and surface activity, which can enhance the mechanical properties of the coating, such as hardness and wear resistance, while improving the corrosion resistance and high temperature resistance of the coating. Micro-nano α-Al2O3 is also an excellent modified material, and its composite modification with organosilane, resin and other materials can greatly improve the application effect of conversion film, and also has a greater role in promoting its stability and weather resistance. In metal surface coatings, ceramic coatings and composite coatings, micro-nano α-Al2O3 additives are widely used to improve the service life and stability of coatings. In addition, it also shows broad application prospects in high-tech fields such as electronic devices, aerospace and automotive industries. In the future, with the development of surface technology, the market application of micro-nano α-Al2O3 chromium-free passivation will grow significantly, and the synergy with other functional materials and the development of composite materials will also become the focus of research.
文摘文章探讨了负载型铁基催化剂在催化合成邻溴苯胺方面的应用。邻溴苯胺是一种重要的有机中间体,广泛应用于农药、染料及医药等领域。文章首先介绍了邻溴苯胺的合成方法,包括铁粉加酸还原法、催化加氢法、催化转移氢化法以及其他还原方法。其中,催化加氢法和催化转移氢化法因其在温和条件下操作且环境友好而受到关注。随后,文章重点讨论了负载型铁基催化剂的制备与表征,包括催化剂载体(如碳材料和杂原子掺杂型材料)的选择、催化剂的活性组分以及催化剂的结构优化。最后,总结了负载型铁基催化剂在催化还原邻溴硝基苯为邻溴苯胺的过程中表现出良好的催化活性和选择性。同时,对负载型铁基催化剂在催化还原硝基化合物领域的应用前景进行展望。The application of supported iron-based catalysts in the catalytic synthesis of o-bromoaniline was explored in this review. o-Bromoaniline is an important organic intermediate widely used in the fields of pesticides, dyes, and pharmaceuticals. The synthesis methods of o-bromoaniline, including the iron powder-acid reduction method, catalytic hydrogenation, catalytic transfer hydrogenation, and other reduction methods were firstly introduced in this review. Among these, catalytic hydrogenation and catalytic transfer hydrogenation have garnered attention for their operation under mild conditions and environmental friendliness. Subsequently, the article focuses on the preparation and characterization of supported iron-based catalysts, including the selection of catalyst supports (such as carbon materials and heteroatom-doped materials), the active components of the catalysts, and the structural optimization of the catalysts. Finally, the excellent catalytic activity and selectivity exhibited by supported iron-based catalysts in the catalytic reduction of nitrobenzene to o-bromoaniline was summarized in this review. The prospects of supported iron-based catalysts in the field of catalytic reduction of nitro compounds were also looked ahead.
文摘为设计并合成新的含磷氟键的化合物,并研究其性质,以二苯基氯化膦,苯基二氯化膦为反应物,通过简单的卤素交换反应合成两种化合物PhP(O)F2、Ph2P(O)F,并通过单晶X-射线衍射仪,1H、31P、19F NMR对其结构进行表征。同时对其进行抑菌活性筛选,发现二者对于两种革兰氏菌(大肠杆菌、金黄色葡萄球菌)均具有良好的抑菌活性,并得到了最小抑菌浓度。To design and synthesize new phosphorus-fluorine-containing compounds, and to study their properties, two compounds, PhP(O)F2 and Ph2P(O)F, were synthesized from diphenylphosphine chloride and phenylphosphorus dichloride through a simple halogen exchange reaction. Their structures were characterized by single-crystal X-ray diffraction, 1H, 31P, and 19F NMR spectroscopies. Additionally, their antibacterial activity was screened against two Gram-positive bacteria (Staphylococcus aureus) and Gram-negative bacteria (Escherichia coli), revealing that both compounds exhibited good antibacterial activity with minimum inhibitory concentrations determined.
文摘臭氧作为一种高效且环保的氧化剂,在水处理、空气净化、医疗消毒等多个领域发挥着重要作用。传统的管式臭氧发生技术存在效率不高、稳定性差、运营成本高等缺点,限制了其在更广泛领域的应用。针对这些问题,本文重点介绍了一种新型的板式臭氧发生器,该技术以其高效率、高稳定性和低运营成本等优势,在水处理行业中展现出卓越的性能。本文首先综述了臭氧的基本特性及其在水处理中的应用背景,然后详细阐述了板式臭氧发生器的工作原理、技术特点。此外,本文还探讨了板式臭氧发生器在工业废水处理、市政污水回用、饮用水深度净化等多个领域的应用实例,并对其市场前景和发展趋势进行了分析预测。最后,本文总结了板式臭氧发生器的优越性,并对其在水处理行业的应用潜力进行了展望。As an efficient and environmentally friendly oxidant, ozone plays a significant role in various fields such as water treatment, air purification, and medical disinfection. Traditional ozone generation technologies suffer from drawbacks such as low efficiency, poor stability, and high operational costs, which limit their broader application. This paper focuses on introducing a new type of plate-type ozone generator, which demonstrates excellent performance in the water treatment industry with its advantages of high efficiency, high stability, and low operational costs. The paper begins with a review of the basic properties of ozone and its application background in water treatment, then elaborates on the working principle and technical features of the plate-type ozone generator. Furthermore, the paper explores application examples of the plate-type ozone generator in industrial wastewater treatment, municipal sewage reuse, and deep purification of drinking water, and analyzes and forecasts its market prospects and development trends. Finally, the paper summarizes the advantages of the plate-type ozone generator and looks forward to its application potential in the water treatment industry.
