Molecular sieve manufacturer explains the application prospects of molecular sieve environmentally friendly catalysts
In the early 1990s, the convening of the first large-scale environmental catalyst conference foreshadowed the widespread application of catalysts and catalytic technologies in the field of environmental protection. The initial concept of environmental catalysis was limited to technologies that reduced the release of environmental pollutants. However, the application of environmental catalysis now has a broader meaning:
① Static pollution source catalytic purification technology is used for catalytic purification of gases released from static pollution sources, mainly for removal of nitrogen oxides, Volatile organic compound and liquid pollutants (removal of nitrate, toxic substances and compounds difficult to treat);
② Dynamic pollution source catalytic purification technology (clean fuel, reducing NOx, CO, HC, especially pollution particles generated by transportation, etc.);
③ Catalytic purification technology for the conversion or recycling of solid waste (such as the conversion of waste polymers, the recycling of industrial solid waste, etc.);
④ Catalyst technologies for reducing greenhouse gas emissions (such as reducing N2O, CH4, CO2 and fluorocarbon emissions);
⑤ Catalysts for indoor applications (such as improving air and water quality, equipment for surface self-cleaning, etc.);
⑥ Catalytic methods for clean energy production (such as hydrogen production, utilizing renewable energy, biomass, fuel cells, and batteries);
⑦ A new catalytic process with sustainable products and biocompatible technologies.
A large number of molecular sieve materials, from the conversion of nitrogen oxides on transition metal exchange molecular sieves to microporous or mesoporous materials containing precious or non precious metals, have been studied for environmental applications. Although most materials that are expected to define clear catalysts have to be reconsidered, the pore structure and topological structure of clear catalysts do provide a unique environment for catalysts. The discussion of some issues and controversies regarding the properties and reaction mechanisms of active sites is not aimed at presenting a complete viewpoint or reaching a definitive conclusion, but rather to demonstrate the complexity of the problem and the limitations of some conclusions.
Although some developments have a significant relationship with highly hydrophobic high silicon molecular sieve materials, the greater limitation is the application of these materials in VOC combustion. Despite significant research efforts, its prospects as a photocatalyst are not optimistic.
The mismatch between the research scope and the more promising application scope has become a common phenomenon. In terms of nitrogen oxide removal, although researchers have made great efforts in identifying active sites and studying reaction mechanisms, there is still a considerable distance from these basic studies to the development and conversion of modified catalysts. Hunan Providence New Materials Co., Ltd is a professional molecular sieve manufacturer
which can provide USY zeolite, NaY zeolite, REY zeolite, ZSM-5 zeolite, welcome to consult.