The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 21, 2020
Filed:
Feb. 13, 2017
Steven J. Pontonio, Eden, NY (US);
Neil A. Stephenson, E. Amherst, NY (US);
Philip A. Barrett, Tonawanda, NY (US);
Nicholas R. Stuckert, Grand Island, NY (US);
Steven J. Pontonio, Eden, NY (US);
Neil A. Stephenson, E. Amherst, NY (US);
Philip A. Barrett, Tonawanda, NY (US);
Nicholas R. Stuckert, Grand Island, NY (US);
PRAXAIR TECHNOLOGY, INC., Danbury, CT (US);
Abstract
The present invention relates to a method for modifying the crystalline inorganic framework of an adsorbent with coatings to provide rate selectivity for one gas over others is described. The method described herein narrows the effective pore size of crystalline porous solids with pores less than about 5A for rate selective separations. This method of the invention comprises treating the hydrated or partially hydrated zeolite with a silicone derived binding agent followed by subsequent heat treatment. The additive content and treatment are adjusted to match effective pore size to specific separations. The superior adsorbent has the added convenience of bead forming simultaneously with pore modification as well as having the treatment result in the yielding of high crush strength products.