Navigation Links
Rapid heating prepares energy-saving zeolite for greater role in industrial separations
Date:8/3/2009

ing promotes the formation of flexible grain boundary defects, or interfaces, between zeolite crystals. These defects can grow much larger than the zeolite pores to become "nonselective" pathways that can be permeated by the very molecules the zeolite is designed to separate.

"The molecules that you are trying to separate with your zeolite film," says Snyder, "can now circumvent the highly selective pathways and pass through the grain boundaries. This has been a major issue for the commercial viability of zeolite membranes."

Tsapatsis' group uses a regimen of RTP to remove the SDA molecules from inside the zeolite pores and to promote what they believe could be chemical "gluing" of the zeolite crystal domains. After heating the zeolite to 700 degrees C, the researchers hold it at that temperature for up to 2 minutes and then cool the material rapidly to room temperature.

The researchers believe the rapid rise in temperature may cause bonding between the crystal domains. "This could possibly decrease the flexibility of the grain boundaries so that they no longer open up between the crystals during operation of the membrane," says Snyder, who worked with Tsapatsis as a postdoctoral researcher. "In short, this type of heat treatment may chemically glue the crystal domains together."

A second round of RTP or conventional slow-heating is then necessary, says Snyder, to completely remove the SDA molecules from inside the pores.

Snyder has used an optical microscopy technique called laser scanning confocal microscopy to examine the grain boundaries in conventionally produced zeolite membranes and in zeolite membranes that have undergone RTP. Confocal microscopy is used widely in biology research to take optical slices of transparent, 3-D structures. Snyder and Tsapatsis were among the first teams to use the technique to characterize zeolite membranes by selectively labeling grain boundary defects with fluorescing molecules. The
'/>"/>

Contact: Kurt Pfitzer
kap4@lehigh.edu
610-758-3017
Lehigh University
Source:Eurekalert

Page: 1 2 3 4

Related biology technology :

1. Pathway Medical Technologies Adds Joe Rafferty as VP, Sales, and Moves To Larger Facility to Accommodate Rapid Growth
2. NanoLogix Inc. Appoints Director of IP and Makes Progress on Rapid Anthrax Detection
3. Spectral partner launches EAA(TM) Rapid Sepsis Diagnostic in Germany
4. Enigma Diagnostics Announces a European Commission Award of EUR3 Million to Fund the Development of a Point of Care Platform for the Rapid Diagnosis of Influenza Infections
5. Angiotech Receives CE Mark Approval of Quill(TM) SRS MONODERM(TM), a New Rapidly Resorbing Suture Product Line
6. Rapid Quantification of Osteoarthritis With a Novel, Office-Based, High-Resolution Digital Imaging Device
7. Collaboration Sparks Creation of New Grand Rapids Laboratory Focused on Womens Health
8. MedImmune Strengthens Key Leadership Functions to Further Support Recently Expanded, Rapidly Advancing Product Portfolio
9. Schering-Plough and OraSure Technologies Sign International Collaboration for Rapid Point-of-Care Oral Hepatitis C Test
10. Share Issue Gives Cellectricon SEK 89 Million to Continue its Rapid Market Expansion
11. Mobidiag Releases First Microarray Based Rapid Test for Herpesvirus Identification
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:1/15/2014)... Vernon Hills, IL (PRWEB) January 15, 2014 ... Cole-Parmer to find hard-working items for the lab, from ... designated as Guaranteed-in-Stock (GIS)—ready to ship when you order. ... Masterflex® Peristaltic Pumps , from the L/S® model ...
(Date:1/15/2014)... California , January 15, 2014 Oxford ... today announced the appointment of Thomas C Reynolds MD, PhD ... years, development experience gained in the biotechnology industry, most recently ... am delighted to welcome Tom at this transformative time for ...
(Date:1/15/2014)... This webinar will focus on EMA and ... in biosimilars. , Regulatory frameworks are evolving many countries ... the complex nature of biopharmaceuticals makes the demonstration of ... challenging. Based on the specific aspects of biosimilar drug ...
(Date:1/15/2014)... TX (PRWEB) January 15, 2014 More ... disease, and about 1 in 3 seniors will die ... source ). These jaw-dropping figures have shocked many Americans ... and, hopefully, help prevent these tragic age-related cognitive disorders. ...
Breaking Biology Technology:Cole-Parmer Begins 2014 with the Release of Preferred Solutions 2Oxford BioTherapeutics Appoints Thomas C Reynolds MD, PhD to its Board of Directors 2Oxford BioTherapeutics Appoints Thomas C Reynolds MD, PhD to its Board of Directors 3Xtalks Life Sciences Webinar Examines Safety Assessment of Biosimilars 2Biohack Pure Offers 5 Tips for Increasing Memory in 2014 2
... Proteon Therapeutics,( http://www.proteontherapeutics.com ), a privately ... address the,medical needs of patients with kidney ... Annual Meeting of the American Society of ... Dilates Outflow,Veins in a Preclinical Model of ...
... Dr. Brad Thompson, President,and CEO of Oncolytics Biotech Inc. ... the Company at the Acumen BioFin Rodman & Renshaw ... 3:20 p.m. ET.,The event will be held at the ... live audio webcast of the presentation will be available ...
... agency to provide free home caregiving to disabled ... has announced its,2007 We Care For Veterans campaign ... services to qualified disabled veterans. (Logo: ... the nation are,donating 20 hours each of free ...
Cached Biology Technology:Proteon Therapeutics to Present at Annual Meeting of American Society of Nephrology in San Francisco on November 2, 2007 2Media Advisory - Oncolytics Biotech Inc. to Present at Acumen BioFin Rodman & Renshaw 9th Annual Healthcare Conference 2Homewatch CareGivers Launches 2007 We Care For Veterans Campaign 2
(Date:4/23/2014)... Climate fiction, or simply cli-fi, is a newly coined term ... global warming. New research from University of Copenhagen shows how ... to simulate the potential consequences of climate change and imagine ... than scientific data on changes in the atmosphere; it is ... by the books we read and the films we see. ...
(Date:4/23/2014)... first cause of dementia and affects some 400,000 people ... been found. One of the reasons for this is ... cause alterations in nerve transmissions and the loss of ... from the Institute of Neuroscience at the Universitat Autnoma ... memory consolidation and were able to develop a gene ...
(Date:4/23/2014)... many social mammals, ravens form different types of social ... and they also form strict dominance relations. From a ... a key ability in daily social life ("knowing who ... group members have with each other sets the stage ... results of this study have been published in the ...
Breaking Biology News(10 mins):Fiction prepares us for a world changed by global warming 2Fiction prepares us for a world changed by global warming 3Loss of memory in Alzheimer's mice models reversed through gene therapy 2Ravens understand the relations among others 2
... Institute of Science and his colleagues caused a storm ... years back that tiny airborne particles, known as aerosols, ... change ?having, on a local scale, an even greater ... how these particles influence clouds have generated many uncertainties. ...
... sequencing of the chimpanzee genome last year, geneticists have spent ... closest evolutionary relative, looking for the differences that distinguish the ... human DNA sequence with the most dramatically increased rate of ... still unknown, but it appears to be directly involved in ...
... new study, published today in the current issue ... Sciences has significant implications for the design of ... in human biomedical research. The groundbreaking study, entitled, ... Quantum Dots", demonstrates that quantum dots can one ...
Cached Biology News:Tiny airborne particles are a major cause of climate change 2Tiny airborne particles are a major cause of climate change 3Researchers identify human DNA on the fast track 2Researchers identify human DNA on the fast track 3Connect the Quantum Dots 2
... filter (S37100, Photographic Filters for Fluorescent ... for black-and-white photography of gels stained ... stain, the safer ethidium bromide alternative. ... filter is identical to the SYPRO ...
Enodgenous alkaline phosphotase inhibitor. Levamisole solution is supplied in concentrated form (20x). The final concentration of levamisole in the substrate solution will be 1 mM....
Several Pichia pastoris strains are available to allow you to optimize expression and recovery of your protein of interest. Table 1 provides information to help you choose the appropriate strain....
Standard 2" or 3" Plastic can be ordered with 81 or 100 cell dividers. Mini 2" Plastics Boxes come standard with 25 cell dividers. Plastic boxes can also be ordered with corresponding freezer racks...
Biology Products: