In:
Green Chemistry, Royal Society of Chemistry (RSC), Vol. 24, No. 21 ( 2022), p. 8270-8279
Abstract:
CO 2 oxidative dehydrogenation of propane (CO 2 -ODHP) is a strategy of “two birds with one stone” to synthesize propylene and utilize CO 2 . However, the reaction is always conducted at high temperatures ( 〉 550 °C). In the present work, we have for the first time conducted the reaction at 270 °C under photothermal conditions over several BiOX (X = Cl, Br, I) nanocatalysts. Among them, the BiOI nanosheet catalyst exhibited the highest C 3 H 6 formation activity of 282.6 μmol g cat −1 h −1 with 89% selectivity. The lattice oxygen species on the catalyst could catalyze propane dehydrogenation to propylene, and simultaneously, oxygen vacancies were formed. The oxygen vacancies are responsible for CO 2 reduction to CO. In addition, the catalyst is facet-dependent, and the (001) facets are more active than the (110) facets. The present work successfully verifies the feasibility of photothermal catalytic CO 2 -ODHP over BiOI nanosheets and also provides a new insight to construct other facet-dependent dual-functional redox catalysts.
Type of Medium:
Online Resource
ISSN:
1463-9262
,
1463-9270
Language:
English
Publisher:
Royal Society of Chemistry (RSC)
Publication Date:
2022
detail.hit.zdb_id:
1485110-6
detail.hit.zdb_id:
2006274-6
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