Zeolitic imidazole framework-67 as an efficient heterogeneous catalyst for the conversion of CO₂ to cyclic carbonates

Abstract

ZIF-67 acts as a very efficient catalyst for the cycloaddition of CO2 to epoxides affording cyclic carbonates with high selectivity, without any need for a solvent or a co-catalyst.

Switching from linear to cyclic δ‐Polyvalerolactone synthesized via zeolitic imidazolate framework as a catalyst: A promising approach

“…The large diversity in structures, adsorption affinities, high surface areas, and pore sizes make MOFs attractive as advanced separation media, gas storage, and sensing catalyst . MOFs show high synthetic flexibility because of possible bridging metal clusters and organic linkers . The type of metal ions or metal cluster in MOFs design greatly affects their topology, performance and physical–chemical properties in different applications …”

“…Zeolitic imidazolate frameworks (ZIFs), a sub‐class of MOFs synthesized by metallic nodes (e.g. Zn, Co) and thermally/chemically stable imidazole linkers with a large pore size, and large zeolitic topologies can be used as a favorable catalyst for polymerization . Only a few examples of ZIFs‐8 as a heterogeneous catalyst are cited in the literature.…”

“…ZIFs‐8 has been shown to be active in transesterification reactions, and Knoevenagel reaction. ZIF‐67 also has been studied in the coupling of CO 2 with epoxides …”

Metal-Organic Framework as Catalyst in Esterification of Oleic Acid for Biodiesel Production

“…High porosity materials like metal-organic frameworks (MOFs) which constructed framework from inorganic (metals cluster/nodes) with organic (ligand/linker) offer tremendous possibilities for catalyst application since their properties in high porosity, surface area, and enable for tailor design for tuning the acidity/basicity properties [17][18][19]. Here, we proposed to use MOFs which their high stability in chemical, physical and thermal properties in reaction condition to investigate on esterification.…”

“…Some of the examples are ion-exchange resins having sulfonic acid groups [6], sulfated or mixed oxides [7], have been reported such as leaching of species in recyclability [15], high condition in term of temperature and reaction time on, the low diffusion of oil due to the small pore size, swelling tendency in solvent, low active site involve of low surface area etc [16]. On the basis of these considerations, the catalyst improvement of the esterification could represent one of the key points through which the whole process can result in being economically convenient.High porosity materials like metal-organic frameworks (MOFs) which constructed framework from inorganic (metals cluster/nodes) with organic (ligand/linker) offer tremendous possibilities for catalyst application since their properties in high porosity, surface area, and enable for tailor design for tuning the acidity/basicity properties [17][18][19]. Here, we proposed to use MOFs which their high stability in chemical, physical and thermal properties in reaction condition to investigate on esterification.…”