Angewandte Chemie International Edition
10.1002/anie.202107264
RESEARCH ARTICLE
two functional sites was profitable.[3b,4a,15] Sometimes, this
phenomenon was superficially attributed to the speculative
proximity effect. However, this might be problematic because the
negative effect of close contact is caused by the interaction
between the two components, not the spatial distance. The direct
effect of element migration on bifunctional systems is that the
integration manners of two components should be varied,
depending on the oxide type. For instance, the granule-stacking
manner with several hundred micrometers between zeolite and
This work was supported by the National Key Research and
Development Program of Ministry of Science and Technology (No.
2019YFE0104400), the National Natural Science Foundation of
China (Nos. 91945301, 22072120, 22002125, 21972116), the
China Postdoctoral Science Foundation (Nos. 2019M662231,
2019TQ0178).
Keywords: Bifunctional catalysis; catalyst deactivation; CO
2
utilization; heterogeneous catalysis; zeolites
mobile In
2
O
3
has been frequently used in CO
2
hydrogenation,
3
O would lead to
while the close contact with the H-ZSM-5 and In
2
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2 3
as the formation of C5+ hydrocarbons over Cr O /H-ZSM-5. The
7
oxide function employed in this work is unitary oxide, while the
migration of metals in the frequently used binary or ternary oxides
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element migration, especially the neutralization of BAS, is often
irreversible. Thus, the replacement of mobile elements, spatial
separation of two functional sites, or immobilization of active
elements by compounding can be considered to stabilize the
performance of bifunctional catalysts. Our findings in this work
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bifunctional oxide-zeolite catalysts for C1 chemistry and provide
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Acknowledgements
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