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:
Mar. 22, 2022
Filed:
Jun. 09, 2017
Applicant:
Nanjing University of Technology, Nanjing, CN;
Inventors:
Assignee:
Nanjing University of Technology, Nanjing, CN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 67/00 (2006.01); B01D 53/22 (2006.01); B01D 71/02 (2006.01); B01D 69/10 (2006.01);
U.S. Cl.
CPC ...
B01D 67/0051 (2013.01); B01D 53/228 (2013.01); B01D 71/028 (2013.01); B01D 69/10 (2013.01); B01D 2323/08 (2013.01); B01D 2323/14 (2013.01); B01D 2323/28 (2013.01); B01D 2323/345 (2013.01); B01D 2325/02 (2013.01);
Abstract
Provided is a method for preparing a defect-free DDR molecular sieve membrane. Sigma-1 molecular sieve is used as an inducing seed crystal to prepare and obtain a continuous and compact DDR molecular sieve membrane on the surface of a porous ceramic support. An ozone atmosphere or an external field assisted technology is used to remove a template in the pores of the molecular sieve membrane at a low temperature. The invention avoids the formation of intercrystal defects and cracks, an activated DDR molecular sieve membrane has a good selectivity for separating CO2, and the membrane preparation time is significantly reduced.