Catalytic dehydrogenation of propane in hydrogen permselective membrane reactors
- Sandia National Labs., Albuquerque, NM (United States). Advanced Materials Lab.
- Univ. of New Mexico, Albuquerque, NM (United States). UNM/NSF Center for Micro-Engineered Ceramics
- Sandia National Labs., Albuquerque, NM (United States)
- Amoco Exploration and Production, Naperville, IL (United States)
Propane dehydrogenation was studied in hydrogen permselective packed-bed membrane reactors and conventional packed-bed reactors. Two different types of developmental membranes were investigated: microporous silica-based membranes and a palladium thin film supported by a porous ceramic substrate. The membrane reactors were operated at liquid hourly space velocities (LHSVs) similar to those used in commercial reactors for propane dehydrogenation. Although the initial hydrogen permselectivity of the palladium membrane was substantially higher than that of the silica-based membranes, this membrane deactivated and eventually failed after several hours of exposure to reaction conditions. Moderate improvements in propylene yield were obtained with the silica-based membrane reactors. A propylene yield of 39.6% was obtained at an LHSV of 3 and a temperature of 823 K compared to a yield of 29.6% in a conventional packed-bed reactor operated with the same flow rate. The reaction selectivity for propylene was generally above 97 mol% in both the conventional and membrane reactors, however, catalyst deactivation rates were generally higher in the membrane reactors.
- Research Organization:
- Sandia National Laboratory
- DOE Contract Number:
- AC04-94AL85000
- OSTI ID:
- 419836
- Journal Information:
- Industrial and Engineering Chemistry Research, Journal Name: Industrial and Engineering Chemistry Research Journal Issue: 12 Vol. 35; ISSN IECRED; ISSN 0888-5885
- Country of Publication:
- United States
- Language:
- English
Similar Records
Effect of membrane design on the performance of a packed-bed membrane reactor for propane dehydrogenation
Inorganic membrane reactor technology CRADA {number_sign}1176; Final report and assessment of membrane technology