Synthesis at low temperature of particles of the epsilon phase of iron (III) oxide as a single phase within an amorphous silica matrix using the sol-gel method

摘要

Low temperature synthesis of particles of the epsilon phase of iron (III) oxide as a single phase within an amorphous silica matrix using the sol-gel method. # The present invention relates to a sol-gel process for the synthesis of low temperature of a material with high purity in the epsilon phase of iron (III) oxide, {ep} -Fe {sub, 2} O {sub, 3} from low-cost raw materials by a single-process step and easy industrial scaling. The material obtained, both in the form of powder, monolith or coating, consists of nanometric-sized panicles embedded in an amorphous silica matrix and that has properties that make it suitable for use as a permanent magnet, catalyst for water dissociation, component of electronic devices or as a radio wave absorber.