Search Results - benny+freeman

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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   |   Inventor(s): Benny Freeman, Matthew Davenport, Joan Brennecke
Keywords(s):  
Category(s): Physical sciences > Materials > Membranes
Novel Graft Copolymers as Anti-fouling Membrane Coating Materials
When commercially available polymer membranes are exposed to aqueous solutions of salt, emulsified oil droplets, and other particulate matter, their lifetime can decrease catastrophically due to reduction in flux as a result of membrane fouling. This technology provides a new class of graft copolymers capable of extending the lifespan and functionality...
Published: 8/10/2023   |   Inventor(s): Todd Emrick, Kurt Breitenkamp, Ravindra Revanur, Benny Freeman, Bryan Mccloskey
Keywords(s):  
Category(s): Physical Science, Material science
Polymer blends for gas separation membranes
Background Polybenzimidazoles (PBIs) have been studied for use as gas separation membranes for aggressive, high-temperature applications such as hydrogen separations due to their high chemical and thermal stability. Increasing the permeability of PBIs while maintaining good selectivity for gas pairs such as H2/CO2 would make such technology competitive...
Published: 12/11/2023   |   Inventor(s): Benny Freeman, Joshua Moon, Donald Paul
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   |   Inventor(s): Joan Brennecke, Benny Freeman, Constanza Sanchez
Keywords(s): Chemical production, Chemicals
Category(s): Physical sciences > Materials