MUMBAI, India, April 20 -- Intellectual Property India has published a patent application (202411076403 A) filed by Council Of Scientific And Industrial Research, New Delhi, on Oct. 8, 2024, for 'process for the regeneration of spent zeolite molecular sieve.'
Inventor(s) include Govind Sethia; and Prayag Gajera.
The application for the patent was published on April 17, under issue no. 16/2026.
According to the abstract released by the Intellectual Property India: "The present invention relates to a process for the regeneration of a spent Zeolite molecular sieve via removing organic, and inorganic contaminants. More particularly, the present invention involves a process for the regeneration of a Zeolite molecular sieve (ZMS) by treating spent zeolite with demineralized water, solvents and diluted sodium hydroxide solution, followed by drying and calcination at room temperature. The regenerated Zeolite molecular sieve (ZMS) 13X shows 98 % regain of nitrogen adsorption capacity with no significant decrease in crystallinity and a 5-10 % decrease in crush strength. The adsorption capacity of the adsorbent Zeolite molecular sieve was restored by removing organic, and inorganic contaminants irreversibly adsorbed or formed during continuous use and deposited in the crystalline zeolitic molecular sieves. The Zeolite molecular sieve (ZMS) were regenerated 4 times with 92-94% regeneration capacity through controlled thermal, solvent, and alkali treatment under specified conditions with retaining the Zeolite structure, surface area, chemical and physical properties of the ZMS."
Disclaimer: Curated by HT Syndication.
