In situ impregnated Ni/Al2O3 catalysts prepared by binder jet 3D printing using nickel nitrate-containing ink

被引：26

作者：

Bui, Hanh My ^{[1
,2
]}

Kratky, Tim ^{[1
,2
]}

Lee, Insu ^{[1
,2
]}

Khare, Rachit ^{[1
,2
]}

Hiller, Max ^{[1
,2
]}

Wedig, Steffen ^{[1
,2
]}

Guenther, Sebastian ^{[1
,2
]}

Hinrichsen, Olaf ^{[1
,2
]}

机构：

[1] Tech Univ Munich, TUM Sch Nat Sci, Lichtenbergstr 4, D-85748 Garching, Germany

[2] Tech Univ Munich, Catalysis Res Ctr, Ernst Otto Fischer Str 1, D-85748 Garching, Germany

来源：

CATALYSIS COMMUNICATIONS | 2023年 / 182卷

关键词：

Binder jetting; Additive manufacturing; Heterogeneous catalysis; Nickel catalyst; Supported catalyst; Wet impregnation; Nickel aluminate spinel; TEMPERATURE-PROGRAMMED-REDUCTION; ACTIVE-PHASE DISTRIBUTION; ALUMINA CATALYSTS; PARTICLE-SIZE; NIAL2O4; OXIDE; CO2; HYDROGENATION; METHANATION; SELECTIVITY;

D O I：

10.1016/j.catcom.2023.106738

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The binder jetting printing technique enables in situ impregnation of alumina using a Ni(NO3)2-containing ink (NI), facilitating omission of impregnation. NI was compared to wet impregnation (WI). Full characterization by quasi-in situ XPS, XAS and TPR revealed the presence of Ni as NiAl2O4 spinel. TPR analysis identified surface NiO and NiAl2O4 species with facilitated reduction by NI, in addition to the respective species in bulk form. Postprocessing affects active site accessibility by coverage. 3D printing limited the Ni loading, but XPS revealed higher metal dispersion by NI. CO2 hydrogenation confirmed active Ni/Al2O3 catalysts with enhanced activity by NI.

引用

页数：9

共 59 条

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