3 results about "M-dichlorobenzene" patented technology

The application discloses a conjugated polymer of chlorobenzene, o-dichlorobenzene or m-dichlorobenzene and EDOT as well as a preparation method and application thereof, and belongs to the field of polymer electrochromic materials. By introducing chlorine atoms as intermediates in different active sites of benzene and EDOT as a strong electron-donating group, the obtained conjugated polymer has the characteristics of a wider redox peak, good optical contrast, fast response time, high coloring efficiency, good stability and the like.

This invention belongs to the field of catalyst technology, specifically relating to a supported iron-ruthenium catalyst and its application in the synthesis of m-dichlorobenzene and / or para-dichlorobenzene. The iron-ruthenium catalyst comprises a support and iron and ruthenium supported on the support. The support comprises quaternary ammonium salt-modified diatomaceous earth. Based on the total weight of the catalyst, the mass percentage of iron is 5-15%, and the mass percentage of ruthenium is 3-9%. The abundant active sites on the surface of the quaternary ammonium salt-modified diatomaceous earth support can significantly improve the catalytic activity and selectivity for m-dichlorobenzene and / or para-dichlorobenzene, without the formation of trichlorobenzene. The catalyst lifetime is 5-8 times longer than that of iron catalysts. The product can be separated and purified by stripping, distillation, and crystallization. The process is simple and can obtain high-purity m-dichlorobenzene and para-dichlorobenzene products.

The present application relates to a kind of catalyst for preparing dichlorobenzene and its preparation method and application, diatomite is used as matrix, CuS phase and Fe2S3 phase are covered on the surface of matrix successively from inside to outside, and the catalyst is used for preparing dichlorobenzene by benzene chlorination.The present application is used for the method for preparing dichlorobenzene by continuous method, the yield of dichlorobenzene is more than 91%, the yield of m-dichlorobenzene is less than 1%, the yield of polychlorobenzene is less than 1%, reach the effect of energy saving, improve conversion rate.