In
the industry, designing synergetic functional nanocatalysts
is a desirable strategy to achieve both high activity and selectivity
for CO2 hydrogenation. Herein, we fabricate the bicomponent
tandem catalysts ZnZrO
x
/SAPO-34@UIO-n (n = 66, 66-NH2, and 67)
to catalyze CO2 conversion into light olefins. Monodispersed
SAPO-34 zeolites are used as the core for the growth of the UIO-n shell to obtain its membrane-encapsulated nanocrystal,
SAPO-34@UIO-n, which is mixed by grinding with ZnZrO
x
to obtain the ZnZrO
x
/SAPO-34@UIO-n catalyst. CO2 hydrogenation
yielded highly selective C2–C4 olefins
(80%) for the catalyst ZnZrO
x
/SAPO-34@UIO-66,
whereas 57% C2–C4 paraffins were obtained
for the catalyst ZnZrO
x
/SAPO-34 without
a UIO-n membrane. The stable UIO-n membrane in the bifunctional catalyst ZnZrO
x
/SAPO-34@UIO-n adjusted the conversion of
CO2 hydrogenation products from paraffins to olefins.