The nature of medium acidity in [CuO/ZnO/ZrO2]SAPO-34 hybrid catalyst for CO2 hydrogenation: study of the interactions between metal oxides and acid sites in zeolite

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This chapter presents the study of a direct synthesis of hydrocarbons through carbon dioxide hydrogenation over hybrid catalysts composed of methanol synthesis catalysts (copper (II) oxide or zinc oxide) and zeolites (HZSM-5, SAPO-34). New peak around 350°C due to the medium acidity appear during the ammonia (NH3)-temperature-programmed desorption (TPD) of hybrid catalyst, and the areas of these new peaks are well correlated with the hydrocarbon yields in CO2 hydrogenation. The appearance of the new NH3-TPD peak is ascribed to the interaction between copper (II) oxide or zinc oxide and SAPO-34, which leads to the mutual changes in the acidity of zeolite and the reducibility of metal oxides.
Publisher
Elsevier Science
Issue Date
2001-06
Language
English
Citation

STUDIES IN SURFACE SCIENCE AND CATALYSIS, v.135, pp.277

ISSN
0167-2991
DOI
10.1016/S0167-2991(01)81608-6
URI
http://hdl.handle.net/10203/24111
Appears in Collection
CBE-Journal Papers(저널논문)
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