Abstract:
CoZn embedded C N framework is prepared by the carbonization of CoZn containing MOF integrated with COF porous
architecture in Ar atmosphere. The graphitic nature of porous
carbon is confirmed from Raman analysis. The porosity and
nanostructure information are retrieved from N2-sorption and
transmission electron microscopic analysis, respectively. The
incorporation of different metals and their oxidation states and
types of nitrogen present in the C N framework are confirmed
from X-ray photoelectron spectroscopy. The basicity of the
materials is determined from a CO2-temperature programmed
desorption. ZnCo embedded C N framework exhibits excellent
activity in the selective reductive formylation using HCOOH. For
comparison, more than 15 materials are prepared, and their
activities are compared. Several control experiments are
performed to establish a structure-activity relation. The recycling experiment, hot-filtration test, and poisoning experiment
demonstrate the metal embedded porous C N framework‘s
recyclability and stability. A reaction mechanism for the
reductive N-formylation of nitroaromatics is presented based on
structure-activity relationship, control reactions, and physicochemical characterizations. The development of interesting
MOF-COF-derived metal nanoclusters embedded C N framework for selective reductive formylation of nitroaromatics using
formic acid will be highly attractive to catalysis researchers and
industria
