I D
× COMMENTARYCOVER STORYIN THE NEWSNEWSFRONTSCHEMENTATOR + Show More
Chementator Briefs
Ultrathin membrane Researchers led by professors Hideto Matsuyama and Tomohisa…
BUSINESS NEWSTECHNICAL & PRACTICALFEATURE REPORTFACTS AT YOUR FINGERTIPSTECHNOLOGY PROFILEEQUIPMENT & SERVICESFOCUS
Focus on Sensors
Wireless transmitters save on level sensor installation Reduce the cost…
NEW PRODUCTS + Show More SHOW PREVIEWS

Comment PDF

New heating technique improves zeolite membrane performance

By Chemical Engineering |

Adding a rapid heat-treatment step to the process of making zeolite membranes improves separation performance by eliminating grain boundary defects, according to researchers from the University of Minnesota (UMN; Minneapolis, Minn.; www.umn.edu), who published their study in the July 31 issue of Science. The study could inform efforts aimed at producing zeolite films for gas, liquid and vapor membrane separations processes, as well as for hybrid membrane-distillation processes that separate industrial mixtures. If zeolite membranes could be fabricated to deliver expected performance in flux and selectivity, they could reduce the energy costs associated with distillation by 10-fold, notes professor Michael Tsapatsis, a UMN chemical engineer who led the research. Large-scale production of zeolite films has been plagued by the formation of cracks and grain boundary defects. Membrane defects degrade selectivity by allowing molecules to bypass the zeolite pores that are designed to discriminate among mixture components. Grain boundary defects form during calcination, a heating process required to remove structure-directing agents (SDAs) from zeolite pores. SDAs are added during synthesis to define zeolite pore size and shape. The research…
Related Content

Chemical Engineering publishes FREE eletters that bring our original content to our readers in an easily accessible email format about once a week.
Subscribe Now
Improving chemical production processes with IIoT and AI technologies
New filtration technology for highly corrosive media
PTA production: Lowering OPEX without compromising on quality
Sure that zero means zero in your zero-liquid discharge (ZLD) process?
How separation processes profit from Industrial Internet of Things (IIoT) solutions

View More