Location History:
- Monterotondo, IT (1986)
- Rome, IT (1989)
Company Filing History:
Years Active: 1986-1989
Title: Francesco Di Gregorio: Innovator in Zirconium Phosphate and Inorganic Cation Exchangers
Introduction
Francesco Di Gregorio is a notable inventor based in Monterotondo, Italy. He has made significant contributions to the field of materials science, particularly in the development of zirconium phosphate and inorganic cation exchangers. With a total of 2 patents to his name, his work has implications in various industrial applications.
Latest Patents
One of Di Gregorio's latest patents is for a zirconium phosphate and method for its preparation. This invention relates to zirconium phosphate particles with sizes ranging from 1 to 100 µm, featuring a lamellar structure with an interlayer distance of 7.9 to 8.2 Å in the anhydrous state, and a surface area between 9 to 20 m²/g. The method involves altering the lamellar structure of zirconium phosphate by intercalating an organic substance containing a proton-acceptor group and water, followed by treatment with ultrasounds. The process also includes regenerating the hydrogen form of the zirconium phosphate using an acid and washing it with diluted acids and/or water.
Another significant patent involves the development of inorganic cation exchangers. This invention provides mixed phosphorous or arsenic salts of tetravalent metals, represented by the general formula M(HAO₄)₂-x(HAO₃)ₓ.nH₂O, where M can be Zr, Ti, or Hf, and A represents phosphorus or arsenic. These salts are highly stable and have potential applications in ion exchange, catalysis, intercalation of molecules, solid electrolytes, and chromatography. The preparation method involves reacting a halide, oxyhalide, nitrate, sulfate, phosphate, or oxide of the tetravalent metal with at least two oxygenated acids of phosphorus and/or arsenic.
Career Highlights
Throughout his career, Francesco Di Gregorio has worked with prominent companies such as Eniricerche S.p.a. and Eni - Ente Nazionale Idrocarburi. His experience in these organizations has contributed to his expertise in the field of materials science and innovation.
Collaborations
Di Gregorio has collaborated with notable colleagues, including Giulio Alberti and Francesco Bartoli. These partnerships have likely enriched his research