Effects of defective nanostructured alumina supports on the syngas production by tri-reforming of methane

被引：0

作者：

Bertoldo, Gabriela M. ^{[1
]}

Oliveira, Alcineia C. ^{[1
]}

Saraiva, Gilberto D. ^{[2
]}

Pinheiro, Gardenia S. ^{[3
]}

Lang, Rossano ^{[4
]}

Assaf, Elisabete M. ^{[5
]}

Lucredio, Alessandra ^{[5
]}

Ballesteros-Plata, Daniel ^{[6
]}

Rodriguez-Castellon, Enrique ^{[6
]}

机构：

[1] Univ Fed Ceara, Dept Quim Analit & Fisico Quim, BR-940 Fortaleza, Ceara, Brazil

[2] Univ Estadual Ceara, Fac Edu Ciencias & Letras Sertao Cent, BR-63902098 Quixada, Brazil

[3] Univ Fed Piaui, Dept Fis, BR-57072970 Teresina, Piaui, Brazil

[4] Univ Fed Sao Paulo, Inst Ciencia & Tecnol, BR-12231280 Sao Jose Dos Campos, SP, Brazil

[5] Univ Sao Paulo, Inst Quim, BR-13566590 Sao Carlos, SP, Brazil

[6] Univ Malaga, Fac Ciencias, Dept Quim Inorgan, Inst Interuniv Invest Biorrefinerias I3B, Malaga 29071, Spain

来源：

CATALYSIS TODAY | 2025年 / 454卷

关键词：

Methane; Tri-reforming; Nanostructure; Alumina; NiPt alloy; CO; 2; conversion; NI CATALYSTS; PARTIAL OXIDATION; NICKEL; BEHAVIOR; OXIDES; AL2O3;

D O I：

10.1016/j.cattod.2025.115280

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

This work aims to evaluate the influence of defective nanostructured alumina supports on the catalytic performance of the solids in the TRM reaction. The synergistic effects between NiPt nanoparticles on the nanostructured alumina support is also examined. Depending on the promoter added to the nanostructured alumina i. e., Zn, Mg or La, stable spinel phases or solid solutions with abundant intrinsic oxygen defects are formed. For NiPt/Al2ZnxOy and NiPt/Al2LaxOy, enriched PtOx and NiO nanoparticles microenvironments surrounding the defective support facilitate oxygen diffusion within the crystal lattice to the NiPt surface, which appeared to be the reason for the activity of the solids in the reaction. The NiPt/Al2MgxOy formed a NiO-MgO solid solution and out layer spinel phases, in which the presence of lattice oxygen species and extended defects helped by the accessible NiPt alloy on the support surface gave a strong metal-support interaction. This results in an improvement of the methane and CO2 conversions of 75 and 95 % at H2/CO ratio of 1.3.

引用

页数：15

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