{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/113931"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/113931","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Effect of metal sequestrants on the decomposition of hydroxylammonium nitrate","abstract":"Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2022-04-06 without embargo terms","abstract_html":"Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2022-04-06 without embargo terms","abstract_has_math":false,"creators":["Broemmelsiek, Emil Jonas"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"M.S.","degree_level":"Thesis","degree_discipline":"Aerospace Engineering","degree_department":null,"school":null,"contributors":["Rovey, Joshua L."],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2022,"date_issued":"2022-04-29T21:35:54Z","date_published":"2022-04-29T21:35:54Z","updated_at":"2026-07-22T22:24:53Z","subjects":["Engineering"],"languages":["en","eng"],"rights":["Copyright 2021 Emil Broemmelsiek"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/2142/113931","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Rovey, Joshua L."]},{"key":"dc:creator","label":"Author","values":["Broemmelsiek, Emil Jonas"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2022-04-29T21:35:54Z","2021-12","2021-12-10"]},{"key":"dc:type","label":"Dc Type","values":["text","Thesis"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Aerospace Engineering"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Thesis"]},{"key":"thesis:degree_name","label":"Degree Name","values":["M.S."]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Illinois at Urbana-Champaign"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Engineering"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en","eng"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 2021 Emil Broemmelsiek"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/2142/113931"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2022-04-06 without embargo terms","The student, Emil Broemmelsiek, accepted the attached license on 2021-12-09 at 12:42.","The student, Emil Broemmelsiek, submitted this Thesis for approval on 2021-12-09 at 12:48.","This Thesis was approved for publication on 2021-12-10 at 13:32.","DSpace SAF Submission Ingestion Package generated from Vireo submission #17435 on 2022-04-06 at 17:11:15","Made available in DSpace on 2022-04-29T21:35:54Z (GMT). No. of bitstreams: 3 BROEMMELSIEK-THESIS-2021.pdf: 1576662 bytes, checksum: 3bafe3229f29258bc89d57ebd1047cc7 (MD5) EJB-thesis-masters-v5.docx: 17063196 bytes, checksum: c1fd74efb750eb7afa7dc7c819ab6214 (MD5) LICENSE.txt: 4214 bytes, checksum: 7856f6bfeba4e207c7fbf3f4362f716e (MD5) Previous issue date: 2021-12-10","Hydroxylammonium nitrate (HAN) is an energetic salt used in flight-proven green monopropellants such as ASCENT (formerly AF-M315E) flown in NASA’s 2019 Green Propellant Infusion Mission and SHP163 flown in JAXA’s Rapid Innovative Satellite Technology Demonstration-1. Decomposition of HAN is catalyzed by metals commonly found in storage tanks, a factor limiting its use. This work investigates the ability of metal-sequestering chelating agents to inhibit the de-composition of HAN. Isothermal and dynamic thermogravimetric analysis (TGA) were used to find isothermal decomposition rates, decomposition onset temperatures, and first-order Arrhenius re-action rate parameters. 2,2’-bipyridine (Bipy), triethanolamine (TEA), and ethylenediaminetetraacetic acid (EDTA) were studied as 0.05, 0.1, 0.5, 1, and 5% by weight additives in 90% aqueous HAN by weight. An isothermal decomposition rate of 0.137%/hr at 348 K was observed for HAN. Addition of 1% Bipy and 1% TEA reduced the isothermal decomposition rate by 20.4% to 0.109%/hr and by 3.65% to 0.132%/hr, respectively, showing that Bipy can inhibit decomposition. The addition of 1% EDTA increased the isothermal decomposition rate by 12.4% to 0.154%/hr. Bipy was found to increase the decomposition onset temperature from 454.8 K to 461.8 K while TEA and EDTA returned inconclusive changes. First order reaction rates calculated by the Ozawa-Flynn-Wall method were found to be insufficient to capture the effects of the additives tested. Bipy was found to inhibit the decomposition of HAN, while TEA and EDTA produced little or negative effect, a result believed to be due to poor metal complex stability at low pH and high acidity, respectively. Spectrophotometry was used for colorimetric analysis of Bipy+iron complexes and showed that Bipy forms chelate complexes with trace iron impurities when added to HAN solutions."]},{"key":"dc:format","label":"Dc Format","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["Effect of metal sequestrants on the decomposition of hydroxylammonium nitrate"]}]}],"canonical_facts":{"dc:contributor":["Rovey, Joshua L."],"dc:creator":["Broemmelsiek, Emil Jonas"],"dc:date":["2022-04-29T21:35:54Z","2021-12","2021-12-10"],"dc:description":["Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2022-04-06 without embargo terms","The student, Emil Broemmelsiek, accepted the attached license on 2021-12-09 at 12:42.","The student, Emil Broemmelsiek, submitted this Thesis for approval on 2021-12-09 at 12:48.","This Thesis was approved for publication on 2021-12-10 at 13:32.","DSpace SAF Submission Ingestion Package generated from Vireo submission #17435 on 2022-04-06 at 17:11:15","Made available in DSpace on 2022-04-29T21:35:54Z (GMT). No. of bitstreams: 3 BROEMMELSIEK-THESIS-2021.pdf: 1576662 bytes, checksum: 3bafe3229f29258bc89d57ebd1047cc7 (MD5) EJB-thesis-masters-v5.docx: 17063196 bytes, checksum: c1fd74efb750eb7afa7dc7c819ab6214 (MD5) LICENSE.txt: 4214 bytes, checksum: 7856f6bfeba4e207c7fbf3f4362f716e (MD5) Previous issue date: 2021-12-10","Hydroxylammonium nitrate (HAN) is an energetic salt used in flight-proven green monopropellants such as ASCENT (formerly AF-M315E) flown in NASA’s 2019 Green Propellant Infusion Mission and SHP163 flown in JAXA’s Rapid Innovative Satellite Technology Demonstration-1. Decomposition of HAN is catalyzed by metals commonly found in storage tanks, a factor limiting its use. This work investigates the ability of metal-sequestering chelating agents to inhibit the de-composition of HAN. Isothermal and dynamic thermogravimetric analysis (TGA) were used to find isothermal decomposition rates, decomposition onset temperatures, and first-order Arrhenius re-action rate parameters. 2,2’-bipyridine (Bipy), triethanolamine (TEA), and ethylenediaminetetraacetic acid (EDTA) were studied as 0.05, 0.1, 0.5, 1, and 5% by weight additives in 90% aqueous HAN by weight. An isothermal decomposition rate of 0.137%/hr at 348 K was observed for HAN. Addition of 1% Bipy and 1% TEA reduced the isothermal decomposition rate by 20.4% to 0.109%/hr and by 3.65% to 0.132%/hr, respectively, showing that Bipy can inhibit decomposition. The addition of 1% EDTA increased the isothermal decomposition rate by 12.4% to 0.154%/hr. Bipy was found to increase the decomposition onset temperature from 454.8 K to 461.8 K while TEA and EDTA returned inconclusive changes. First order reaction rates calculated by the Ozawa-Flynn-Wall method were found to be insufficient to capture the effects of the additives tested. Bipy was found to inhibit the decomposition of HAN, while TEA and EDTA produced little or negative effect, a result believed to be due to poor metal complex stability at low pH and high acidity, respectively. Spectrophotometry was used for colorimetric analysis of Bipy+iron complexes and showed that Bipy forms chelate complexes with trace iron impurities when added to HAN solutions."],"dc:format":["application/pdf"],"dc:identifier":["http://hdl.handle.net/2142/113931"],"dc:language":["en","eng"],"dc:rights":["Copyright 2021 Emil Broemmelsiek"],"dc:subject":["Engineering"],"dc:title":["Effect of metal sequestrants on the decomposition of hydroxylammonium nitrate"],"dc:type":["text","Thesis"],"thesis:degree_discipline":["Aerospace Engineering"],"thesis:degree_level":["Thesis"],"thesis:degree_name":["M.S."],"thesis:institution_name":["University of Illinois at Urbana-Champaign"]},"updated_at":"2026-07-22T22:24:53Z"}