Files and links (1)
Published VersionCC BY V4.0, Open Access
Journal article
Reactive Condensation of Cr Vapor on Aluminosilicates Containing Alkaline Oxides
Electrochemical Society. Journal, Vol.171(9), pp.1-13
2024
Abstract
This study is part of a series with the objective of improving fundamental understanding of reactive condensation of Chromium (Cr) vapors, which are generated from Cr containing alloys used in many high-temperature (>500 °C) process environments and can form potentially problematic condensed hexavalent (Cr(VI)) species downstream. This study specifically focuses on the effects of alkaline oxide additives in aluminosilicate fibers on Cr condensation and speciation. Cr vapors were generated by flowing high-temperature (800 °C) air containing 3% water vapor over chromia (Cr2O3) powder, with aluminosilicate fiber samples positioned downstream where the temperature decreases (<500 °C). Total condensed Cr and ratios of oxidation states were measured using inductively coupled plasma optical emission spectroscopy (ICP-OES) and diphenyl carbazide (DPC) colorimetric/direct UV–vis spectrophotometric analyses. Results indicate presence of hexavalent Cr (Cr(VI)) species condensed on all samples investigated. The ratio of Cr(VI) to total Cr detected was consistently higher on aluminosilicate fiber samples containing alkaline oxide (CaO and MgO) additions. Computational thermodynamic equilibrium modelling corroborated experimental results showing stabilities of Ca and Mg chromate (Cr(VI)) compounds. Comparative results and analyses are presented and discussed to help inform mechanistic understanding and future related research and engineering efforts.
Details
- Title
- Reactive Condensation of Cr Vapor on Aluminosilicates Containing Alkaline Oxides
- Authors
- T. K. van Leeuwen (Corresponding Author) - Montana State UniversityA. Guerrero (Author) - Montana State UniversityR. Dowdy (Author) - Montana State UniversityB. Satritama (Author) - Swinburne University of TechnologyM. A. Rhamdhani (Author) - Swinburne University of TechnologyG. Will (Author) - University of the Sunshine Coast, Queensland, School of Science, Technology and EngineeringP. Gannon (Author) - Montana State University System
- Publication details
- Electrochemical Society. Journal, Vol.171(9), pp.1-13
- Publisher
- Electrochemical Society, Inc.
- Date published
- 2024
- DOI
- 10.1149/1945-7111/ad7061
- ISSN
- 1945-7111; 0013-4651
- Copyright note
- © 2024 The Author(s). Published on behalf of The Electrochemical Society by IOP Publishing Limited. This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 License (CC BY, http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse of the work in any medium, provided the original work is properly cited.
- Grant note
- This work was partially funded by the Montana Space Grant Consortium (MTSGC) and the Raymond E. and Erin S. Schultz Emerging Fellowship.
- Organisation Unit
- School of Science, Technology and Engineering
- Language
- English
- Record Identifier
- 991061397402621
- Output Type
- Journal article
Metrics
1 File views/ downloads
30 Record Views
InCites Highlights
These are selected metrics from InCites Benchmarking & Analytics tool, related to this output
- Collaboration types
- Domestic collaboration
- International collaboration
- Web Of Science research areas
- Electrochemistry
- Materials Science, Coatings & Films
UN Sustainable Development Goals (SDGs)
This output has contributed to the advancement of the following goals:
Source: InCites