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Synthesis of high-surface area tungstated zirconia by atomic layer deposition on mesoporous silica

Journal Article · · Microporous and Mesoporous Materials
 [1];  [2];  [2];  [2]
  1. Univ. of Pennsylvania, Philadelphia, PA (United States); University of Pennsylvania
  2. 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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