Sorption of n-butane on sulfated zirconia investigated using a combination of in-situ DRIFT spectroscopy, XPS and TAP
Research output: Contribution to journal › Research article › Contributed › peer-review
Contributors
Abstract
The sorption of n-butane on sulfated zirconia (SZ) was investigated using in-situ Diffuse Reflection Infrared Fourier Transform Spectroscopy (DRIFTS), Photoelectron spectroscopy (XPS) and Temporal Analysis of Products (TAP) measurements. The combination of different spectroscopic techniques like XPS and DRIFTS with transient TAP experiments offer the chance to comprehensively investigate and characterize catalytic sorption sites. Using XPS, DRIFTS, and TAP it was shown that both Brønsted centers (Zr-OH) and the very reactive disulfate groups are involved in the adsorption of n-butane and thus are mainly responsible for the isomerization reaction of n-butane to iso-butane over SZ. Moreover, all methods enable to bridge the pressure gap ranging from UHV to ambient pressure. Especially, adsorption of alkanes with XPS in-situ for different adsorption times has been done for the first time.
Details
Original language | English |
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Article number | 113735 |
Number of pages | 6 |
Journal | Catalysis today |
Volume | 417 |
Publication status | Published - 1 May 2023 |
Peer-reviewed | Yes |
External IDs
WOS | 001011174300001 |
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ORCID | /0000-0003-0087-5723/work/142250086 |
Keywords
ASJC Scopus subject areas
Keywords
- Drift, Sulfated zirconia, Tap, Xps, N-butane