Catalytic carbon membranes for hydrogen production

Technical Report · Wed Jan 01 04:00:00 EST 1992

DOI:https://doi.org/10.2172/5148824· OSTI ID:5148824

Damle, A S; Gangwal, S K

Commercial carbon composite microfiltration membranes may be modified for gas separation applications by providing a gas separation layer with pores in the 1- to 10-nm range. Several organic polymeric precursors and techniques for depositing a suitable layer were investigated in this project. The in situ polymerization technique was found to be the most promising, and pure component permeation tests with membrane samples prepared with this technique indicated Knudsen diffusion behavior. The gas separation factors obtained by mixed-gas permeation tests were found to depend strongly on gas temperature and pressure indicating significant viscous flow at high-pressure conditions. The modified membranes were used to carry out simultaneous water gas shift reaction and product hydrogen separation. These tests indicated increasing CO conversions with increasing hydrogen separation. A simple process model was developed to simulate a catalytic membrane reactor. A number of simulations were carried out to identify operating conditions leading to product hydrogen concentrations over 90 percent. (VC)

• Research Organization: Research Triangle Inst., Research Triangle Park, NC (United States)
• Sponsoring Organization: DOE; USDOE, Washington, DC (United States)
• DOE Contract Number: AC21-89MC26034
• OSTI ID: 5148824
• Report Number(s): DOE/MC/26034-3083; ON: DE92001269
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010402 -- Coal
Lignite
& Peat-- Purification & Upgrading
010404 -- Coal
Lignite
& Peat-- Gasification
08 HYDROGEN
080107* -- Hydrogen-- Production-- Coal Gasification
CARBON
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
COMPOSITE MATERIALS
DEPOSITION
DESIGN
DOCUMENT TYPES
ELEMENTS
HYDROGEN
MATERIALS
MATHEMATICAL MODELS
MEMBRANES
NONMETALS
OXIDES
OXYGEN COMPOUNDS
PERMEABILITY
POLYMERS
POROSITY
PRESSURE DEPENDENCE
PRODUCTION
PROGRESS REPORT
SEPARATION PROCESSES
SHIFT PROCESSES
SIMULATION
TEMPERATURE DEPENDENCE
TESTING