Preparation and characterization of a composite palladium-ceramic membrane

Journal Article · Wed Dec 01 04:00:00 EST 1993 · Industrial and Engineering Chemistry Research; (United States)

DOI:https://doi.org/10.1021/ie00024a008· OSTI ID:5209581

Collins, J P; Way, J D ^[1]

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1. Oregon State Univ., Corvallis, OR (United States). Dept. of Chemical Engineering

Composite palladium--ceramic membranes with palladium films ranging from 11.4 to 20 [mu]m were made by depositing palladium on the inside surface of asymmetric tubular ceramic membranes. Electroless plating was used to deposit the palladium film. Membranes were characterized by conducting permeability experiments with hydrogen, nitrogen, and helium at temperatures from 723 to 913 K and feed pressures from 160 to 2,445 kPa. The membranes had both a high hydrogen permeability and selectivity. The hydrogen permeability for a composite membrane with an 11.4-[mu]m palladium film was 3.23 [times] 10[sup [minus]9] mol [center dot] m/(m[sup 2] [center dot] s [center dot] Pa[sup 0.602]) at 823 K. Hydrogen/nitrogen selectivity for this membrane sealing should further increase the hydrogen selectivity. Results of this study demonstrate the potential for using composite metal-ceramic membranes in membrane reactors including applications that require operation at relatively high temperatures and transmembrane pressure differences. Some of the many potential applications include steam reforming of methane, water gas shift, and dehydrogenation of various hydrocarbons including cyclohexane, ethylbenzene, ethane, propane, and butane. Another promising application is the decomposition of hydrogen sulfide and ammonia impurities in synthesis gas produced at coal gasification plants.

• OSTI ID: 5209581
• Journal Information: Industrial and Engineering Chemistry Research; (United States), Journal Name: Industrial and Engineering Chemistry Research; (United States) Vol. 32:12; ISSN IECRED; ISSN 0888-5885
• Country of Publication: United States
• Language: English

Related Subjects

08 HYDROGEN
080100* -- Hydrogen-- Production
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320303 -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Equipment & Processes
CHEMICAL PREPARATION
ELEMENTS
FILMS
HYDROGEN
MEMBRANE TRANSPORT
MEMBRANES
NONMETALS
PERMEABILITY
SEALS
SEPARATION PROCESSES
SYNTHESIS
THIN FILMS
USES