Influence of gas impurities on the hydrogenation of CO2to methanol using indium-based catalysts

Schühle P, Schmidt M, Schill L, Riisager A, Wasserscheid P, Albert J (2020)


Publication Type: Journal article

Publication year: 2020

Journal

Book Volume: 10

Pages Range: 7309-7322

Journal Issue: 21

DOI: 10.1039/d0cy00946f

Abstract

In this study, the performance of an In2O3/ZrO2 catalyst for hydrogenation of CO2 to methanol is reported in the presence of typical impurities of industrial CO2 feed gas streams. Experiments were performed with defined amounts of SO2, H2S, NO2, NH3 and hydrocarbons purposely added to the reaction mixture under industrially relevant conditions (225-275 °C, 50 bar total pressure, H2 : CO2 = 3 : 1). Comparative studies-with and without added impurities-further relate the observed effects to the behaviour of the commercial Cu/ZnO/Al2O3 methanol catalyst under identical treatments. Elemental analysis was used to determine the amount of sulphur, nitrogen and carbon residing on the catalyst after poisoning and after methanol synthesis. Moreover, temperature programmed desorption (TPD), temperature programmed reduction (TPR) and X-ray photoelectron spectroscopy (XPS) allowed identifying potential catalyst poisons formed on the catalyst surface. This work discloses that H2S and SO2 impurities led to drastic deactivation of the In2O3/ZrO2 catalyst (due to indium sulfide and -sulphate formation), while NH3, NO2 and hydrocarbon impurities have no major effect on the methanol production.

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APA:

Schühle, P., Schmidt, M., Schill, L., Riisager, A., Wasserscheid, P., & Albert, J. (2020). Influence of gas impurities on the hydrogenation of CO2to methanol using indium-based catalysts. Catalysis: Science and Technology, 10(21), 7309-7322. https://dx.doi.org/10.1039/d0cy00946f

MLA:

Schühle, Patrick, et al. "Influence of gas impurities on the hydrogenation of CO2to methanol using indium-based catalysts." Catalysis: Science and Technology 10.21 (2020): 7309-7322.

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