Catalytic carbon membranes for hydrogen production. Final report
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:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC21-89MC26034
- OSTI ID:
- 10145819
- Report Number(s):
- DOE/MC/26034-3083; ON: DE92001269
- Resource Relation:
- Other Information: PBD: Jan 1992
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
01 COAL, LIGNITE, AND PEAT
MEMBRANES
DESIGN
TESTING
HYDROGEN
PRODUCTION
PROGRESS REPORT
SEPARATION PROCESSES
CARBON
COMPOSITE MATERIALS
POROSITY
POLYMERS
DEPOSITION
PERMEABILITY
TEMPERATURE DEPENDENCE
PRESSURE DEPENDENCE
SHIFT PROCESSES
CARBON MONOXIDE
MATHEMATICAL MODELS
SIMULATION
080107
010402
010404
COAL GASIFICATION
PURIFICATION AND UPGRADING
GASIFICATION