{
  "date" : "2001-02-26",
  "identifier_doecontract" : "",
  "subject" : "03 NATURAL GAS; SULFUR; POISONING; CATALYSTS; NATURAL GAS; COMBUSTION; LANTHANUM COMPOUNDS; MANGANESE OXIDES; MAGNESIUM OXIDES; AGING; METHANE; DEACTIVATION; POLYCYCLIC SULFUR HETEROCYCLES; ODORANTS; SULFUR DIOXIDE; THERMODYNAMIC ACTIVITY; REGENERATION; PEROVSKITES; WATER; AMMONIA; LEACHING; ACTIVATION ENERGY",
  "description" : "Ageing treatments were carried out on LaMn{sub 1-x}Mg{sub x}O{sub 3+{delta}} (x=0, 0.2, 0.5) catalysts for methane combustion to throw light on their deactivation mechanism in the presence of tetrahydrothiophene - used in Italy as odorant of natural gas - or directly in the presence of SO{sub 2}. Various characterisation techniques were used in concert: XRD, BET, TEM, SEM-EDS, FTIR, TPD, chemical analysis and atomic absorption. The effects of treatment temperature and exposure on catalytic activity were evaluated: exposure to 200ppmv SO{sub 2} at 800C for 24h causes a rather drastic deactivation of each LaMn{sub 1-x}Mg{sub x}O{sub 3} catalyst. Metal sulphate formation is the major responsible for deactivation. However, the extent of poisoning as well as the catalyst regenerability depends on the catalyst composition. The LaMn{sub 0.5}Mg{sub 0.5}O{sub 3} catalyst can in fact be regenerated completely by water leaching, while LaMn{sub 0.8}Mg{sub 0.2}O{sub 3} and LaMnO{sub 3} perovskites can be regenerated significantly only by leaching with aqueous NH{sub 3} solutions. An explanation of these results, also based on the values of activation energy for each fresh, poisoned and regenerated catalysts, is suggested and a mechanism for catalyst regeneration by water and NH{sub 4}OH solution is proposed.",
  "language" : "English",
  "identifier_report" : "",
  "publisher_sponsor" : "",
  "publisher_country" : "Netherlands",
  "source" : "ECN; EDB-01:033556",
  "purl" : "",
  "title" : "Sulphur poisoning of LaMn{sub 1-x}Mg{sub x}O{sub 3} catalysts for natural gas combustion",
  "type" : "Journal Article",
  "subject_related" : "",
  "relation" : "Journal Name: Applied Catalysis. B, Environmental; Journal Volume: 30; Journal Issue: 1-2; Other Information: PBD: 26 Feb 2001",
  "entry_date" : "2010-12-30",
  "subject_list" : [ "03 NATURAL GAS", "SULFUR", "POISONING", "CATALYSTS", "NATURAL GAS", "COMBUSTION", "LANTHANUM COMPOUNDS", "MANGANESE OXIDES", "MAGNESIUM OXIDES", "AGING", "METHANE", "DEACTIVATION", "POLYCYCLIC SULFUR HETEROCYCLES", "ODORANTS", "SULFUR DIOXIDE", "THERMODYNAMIC ACTIVITY", "REGENERATION", "PEROVSKITES", "WATER", "AMMONIA", "LEACHING", "ACTIVATION ENERGY" ],
  "publisher_availability" : "",
  "rights" : "",
  "announced_date" : "2001-04-16",
  "type_qualifier" : "",
  "has_fulltext" : false,
  "coverage" : "",
  "identifier" : "",
  "journal_volume" : "30",
  "creator" : "Rosso, I; Garrone, E; Geobaldo, F; Onida, B; Saracco, G; Specchia, V [Dipartimento di Scienza dei Materiali e Ingegneria Chimica, Politecnico di Torino, Corso Duca degli Abruzzi, 24-10129 Turin (Italy)]",
  "site_ownership_code" : "ECN",
  "osti_id" : "20149233",
  "journal_issue" : "1-2",
  "resource_type" : "JOUR",
  "format" : "Medium: X; Size: page(s) 61-73",
  "journal_name" : [ ],
  "contributing_organizations" : "",
  "citation_location" : "https://www.osti.gov/etdeweb/biblio/20149233",
  "publication_year" : 2001,
  "subject_list_commas" : "03 NATURAL GAS, SULFUR, POISONING, CATALYSTS, NATURAL GAS, COMBUSTION, LANTHANUM COMPOUNDS, MANGANESE OXIDES, MAGNESIUM OXIDES, AGING, METHANE, DEACTIVATION, POLYCYCLIC SULFUR HETEROCYCLES, ODORANTS, SULFUR DIOXIDE, THERMODYNAMIC ACTIVITY, REGENERATION, PEROVSKITES, WATER, AMMONIA, LEACHING, ACTIVATION ENERGY",
  "publisher" : "",
  "identifier_other" : "Journal ID: ISSN 0926-3373; ACBEE3; TRN: NL01E0690",
  "publisher_research" : "",
  "creators_list" : [ "Rosso, I", "Garrone, E", "Geobaldo, F", "Onida, B", "Saracco, G", "Specchia, V [Dipartimento di Scienza dei Materiali e Ingegneria Chimica, Politecnico di Torino, Corso Duca degli Abruzzi, 24-10129 Turin (Italy)]" ],
  "doi" : "https://doi.org/10.1016/S0926-3373(00)00222-8"
}