Deactivation of Cu/ZnO/Al2O3 catalysts by sintering in liquid phase assisted methanol synthesis from CO2/H2 and a way to counteract it

被引：2

作者：

Walter, Dominic ^{[1
]}

Hackebeil, Jonathan ^{[1
]}

Schumann, Erik ^{[1
]}

Lissner, Andreas ^{[1
]}

Stoerr, Bianca

Motylenko, Mykhaylo ^{[2
]}

Rafaja, David ^{[2
]}

Mertens, Florian ^{[1
]}

机构：

[1] TU Bergakad Freiberg, Inst Phys Chem, Leipziger Str 29, D-09599 Freiberg, Germany

[2] TU Bergakad Freiberg, Inst Werkstoffwissenschaft, Gustav Zeuner Str 5, D-09599 Freiberg, Germany

来源：

JOURNAL OF CATALYSIS | 2024年 / 440卷

关键词：

Methanol synthesis; Liquid phase catalysis; Sintering mechanism; Counteract deactivation; LOW-TEMPERATURE SYNTHESIS; CU-ZNO SYSTEM; BASIS-SETS; VAPOR-PRESSURE; OXIDE CARRIERS; CRITICAL-POINT; HYBRID DFT; HYDROGENATION; DENSITY; FUNCTIONALITY;

D O I：

10.1016/j.jcat.2024.115829

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 sintering process on Cu/ZnO/Al2O3 catalysts in the heterogeneous liquid phase assisted methanol synthesis from CO2/H2 was investigated. In order to better understand the sintering event, in addition to standard methods (XRD, XPS, BET, ICP-OES) microscopic techniques with different magnifications such as SEM-EDX, AFM, and TEM were used. Water has been identified as the sintering agent. In addition to eliminating water with CO, another way was found to remove water from the catalyst surface and therefore to counteract the sintering during catalysis. This goal can be achieved by using highly polar solvents allowing to synthesize MeOH solely from carbon dioxide and hydrogen, without deactivating the catalyst or using carbon monoxide.

引用

页数：10

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