Synthesis of high-surface area tungstated zirconia by atomic layer deposition on mesoporous silica
Journal Article
·
· Microporous and Mesoporous Materials
- Univ. of Pennsylvania, Philadelphia, PA (United States); University of Pennsylvania
- Univ. of Pennsylvania, Philadelphia, PA (United States)
Atomic layer deposition (ALD) was used to prepare ZrO2 films on the surface of the mesoporous silica, SBA-15, and to modify the surface of these films with WO3 in order to form tungstated zirconia. Adsorption-desorption isotherms, pore size distributions, and transmission electron microscopy demonstrated that the ALD synthesis produced zirconia films that were conformal to the SBA-15 pores. DRIFT spectroscopy of pyridine adsorbed on the tungstated-zirconia SBA-15 samples showed adsorbed pyridinium ions, confirming the presence of Brønsted-acid sites on this material, consistent with what has been reported for bulk tungstated zirconia. Here, the ALD-synthesized, tungstated-zirconia SBA-15 was also shown to be active in the acid-catalyzed H-D exchange between toluene and D2O.
- Research Organization:
- Univ. of Pennsylvania, Philadelphia, PA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences & Biosciences Division
- Grant/Contract Number:
- SC0009440
- OSTI ID:
- 1848088
- Alternate ID(s):
- OSTI ID: 1854962
- Journal Information:
- Microporous and Mesoporous Materials, Journal Name: Microporous and Mesoporous Materials Vol. 335; ISSN 1387-1811
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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