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Titolo:
Partial oxidation of ethane to syngas over nickel-based catalysts modifiedby alkali metal oxide and rare earth metal oxide
Autore:
Liu, SL; Xiong, GX; Yang, WS; Xu, LY; Xiong, G; Li, C;
Indirizzi:
Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China Chinese Acad Sci Dalian Peoples R China 116023 n 116023, Peoples R China
Titolo Testata:
CATALYSIS LETTERS
fascicolo: 3-4, volume: 63, anno: 1999,
pagine: 167 - 171
SICI:
1011-372X(1999)63:3-4<167:POOETS>2.0.ZU;2-L
Fonte:
ISI
Lingua:
ENG
Soggetto:
SHORT-CONTACT TIMES; CARBON-DEPOSITION; METHANE; MONOLITHS; STABILIZATION; ETHYLENE; SUPPORTS; ALUMINA;
Keywords:
partial oxidation of ethane; syngas; nickel-based catalysts; modification; alkali metal oxide; rare earth metal oxide; thermal stability; carbon deposition;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Engineering, Computing & Technology
Citazioni:
22
Recensione:
Indirizzi per estratti:
Indirizzo: Xiong, GX Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, POB 110,Dalian 116023, Peoples R China Chinese Acad Sci POB 110 Dalian Peoples R China 116023 R China
Citazione:
S.L. Liu et al., "Partial oxidation of ethane to syngas over nickel-based catalysts modifiedby alkali metal oxide and rare earth metal oxide", CATAL LETT, 63(3-4), 1999, pp. 167-171

Abstract

The catalytic activity, thermal stability and carbon deposition of variousmodified NiO/gamma-Al2O3 and unmodified NiO/gamma-Al2O3 catalysts were investigated with a flow reactor, XRD, TG and UVRRS analysis. The activity andselectivity of the NiO/gamma-Al2O3 catalyst showed little difference from those of the modified nickel-based catalysts. However, modification with alkali metal oxide (Li, Na, K) and rare earth metal oxide (La, Ce, Y, Sm) canimprove the thermal stability of the NiO/gamma-Al2O3 and enhance its ability to suppress carbon deposition during the partial oxidation of ethane (POE). The carbon deposition contains graphite-like species that were detectedby UVRRS. The nickel-based catalysts modified by alkali metal oxide and rare earth metal oxide have excellent catalytic activities (C2H6 conversion of similar to 100%, CO selectivity of similar to 94%, 7x 10(4) l/(kg h), 1123 K), good thermal stability and carbon-deposition resistance.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 05/12/20 alle ore 19:13:21