Corrosion Prevention of Additively Manufactured Aluminum Packing Devices Developed for Process Intensification of CO2Capture by Aqueous Amines

Gyoung G. Jang, Jiheon Jun, Yi Feng Su, Jong K. Keum, Vincent Defelice, Tony Decarmine, Jonaaron Jones, Costas Tsouris

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

Corrosion of additively manufactured (i.e., 3D printed) aluminum packing devices, developed to enhance heat and mass transfer in CO2 absorption columns using amine-CO2 scrubbing solutions, is investigated in this paper. The aluminum structures printed by selective laser melting with Al-10Si-0.3Mg feed powder are susceptible to corrosion in aqueous monoethanolamine, both fresh and used CO2-saturated solutions. The efficacy of corrosion-protective surface layers of aqueous polyether-ketone-ketone (PEKK) dip coating to provide amine corrosion resistance to the 3D printed aluminum structure is also evaluated. PEKK nanothick layers were coated on the corrugated surface of a 3D printed structure, identical to that of the intensified device, yielding 27 times higher corrosion resistance than the uncoated Al alloy surface. A systematic long-term electrochemical corrosion analysis revealed that a multilayer PEKK dip coating protocol enables protection of the 3D printed Al alloy surface in various CO2-monoethanolamine solutions.

Original languageEnglish
Pages (from-to)17036-17044
Number of pages9
JournalIndustrial and Engineering Chemistry Research
Volume60
Issue number47
DOIs
StatePublished - Dec 1 2021

Funding

This work was supported by the U.S. Department of Energy (DOE), Office of Technology Transitions, Technology Commercialization Fund. Part of the materials characterization work, including SEM-EDS and X-ray diffraction, was performed at the Center for Nanophase Materials Science (proposal ID: CNMS 2021-A-00626), which is sponsored at Oak Ridge National Laboratory by DOE’s Scientific User Facilities Division. This research was conducted at Oak Ridge National Laboratory, which is managed by UT Battelle LLC for DOE under contract DE-AC05-00OR22725. This manuscript has been authored by UT-Battelle, LLC, under contract DE-AC05-00OR22725 with the US Department of Energy (DOE). The US government retains and the publisher, by accepting the article for publication, acknowledges that the US government retains a nonexclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this manuscript, or allow others to do so, for US government purposes. DOE will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan ( http://energy.gov/downloads/doe-public-access-plan ).

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