Asymmetric gas separation membranes

Patent · Tue Sep 18 04:00:00 EDT 1984

OSTI ID:6010897

Malon, R F; Zampini, A

Asymmetric gas separation membranes of materials having selective permeation of at least one gas of a gaseous mixture over that of one or more remaining gases of the gaseous mixture, exhibit significantly improved permeation selectivities for the at least one gas when the asymmetric membrane is contacted on one or both surfaces with an effective amount of a Br nsted-Lowry acid. The improved asymmetric gas separation membranes, process for producing the improved membrane, and processes utilizing such membranes for selectively separating at least one gas from a gaseous mixture by permeation are disclosed.

• Assignee: Monsanto Company
• Patent Number(s): US 4472175
• OSTI ID: 6010897
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
424000 -- Engineering-- Pollution Control Equipment-- (1980-1989)
500200* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ASYMMETRY
BROMINE COMPOUNDS
DESIGN
DIFFUSION
EQUIPMENT
GASEOUS WASTES
HALOGEN COMPOUNDS
MANAGEMENT
MATERIALS RECOVERY
MEMBRANE TRANSPORT
MEMBRANES
PERMEABILITY
POLLUTION CONTROL EQUIPMENT
PROCESSING
RECOVERY
SEPARATION PROCESSES
SURFACE PROPERTIES
WASTE MANAGEMENT
WASTE PROCESSING
WASTES