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Search Results - joan+brennecke
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Hydrogen-stable membranes for olefin-paraffin separation
Background Light olefins are produced in greater quantity than any other organic chemical, with over 200 million metric tons of ethylene and propylene generated in 2016—roughly 30 kilograms for every person worldwide. Currently, olefin-paraffin separation, essential to the process, is performed by cryogenic distillation at elevated pressures....
Published: 12/11/2023
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Inventor(s):
Benny Freeman
,
Matthew Davenport
,
Joan Brennecke
Keywords(s):
Category(s):
Physical sciences > Materials > Membranes
Silver carriers stabilized by ionic liquids under presence of hydrogen gas
Problem statement Silver ions in facilitated transport membranes are often unstable under desirable operating conditions for facilitated transport of olefins. Upon exposure to hydrogen gas, the silver ions irreversibly reduce to elemental silver and become immobilized within the membrane, limiting the ability of these membranes to be effective for long-term...
Published: 12/11/2023
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Inventor(s):
Joan Brennecke
,
Benny Freeman
,
Constanza Sanchez
Keywords(s):
Chemical production
,
Chemicals
Category(s):
Physical sciences > Materials
Purification of Gas with Liquid Ionic Compounds
Background: Researchers at Notre Dame pioneered the use of ionic liquids for use in gas separation. And this work continues today, with an eye towards applications in natural gas purification, effluent treatment, pre-combustion separations, supported liquid membranes, and gas drying. Technology: Nitrogen containing heterocyclic cations have been...
Published: 11/26/2013
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Inventor(s):
Joan Brennecke
,
Edward Maginn
Keywords(s):
Category(s):
Advanced Materials