Rational design of bifunctional catalyst from KF and ZnO combination on alumina for cyclic urea synthesis from CO2 and diamine
- Title
- Rational design of bifunctional catalyst from KF and ZnO combination on alumina for cyclic urea synthesis from CO2 and diamine
- Creator
- Kulal N.; John C.; Shanbhag G.V.
- Description
- This study is mainly focused on the design of stable, active and selective catalyst for direct synthesis of 2-imidazolidinone (cyclic urea) from ethylenediamine and CO2. Based on the rationale for the catalyst properties needed for this reaction, KF, ZnO and Al2O3 combination was selected to design the catalyst. ZnO/KF/Al2O3 catalyst was prepared by stepwise wet-impregnation followed by the removal of physisorbed KF from the surface. High product yield could be achieved by tuning acid-base sites by varying the composition and calcination temperature. The catalysts were characterized by various techniques like XRD, N2-sorption, NH3-TPD, CO2-TPD, TEM, XPS and FT-IR measurements. It is shown that acidic and basic properties of the solvent can influence the activity and product selectivity for this reaction. Under optimized condition; 180 C, 10 bar and 10 wt.% catalyst in batch mode, 96.3 % conversion and 89.6 % selectivity towards the 2-imidazolidinone were achieved. 2020 Elsevier B.V.
- Source
- Applied Catalysis A: General, Vol-598
- Date
- 2020-01-01
- Publisher
- Elsevier B.V.
- Subject
- 2-Imidazolidinone; Bifunctional catalyst; CO2; Cyclic urea; Ethylenediamine
- Coverage
- Kulal N., Materials Science and Catalysis Division, Poornaprajna Institute of Scientific Research (PPISR), Bidalur Post, Devanahalli, Bengaluru, 562 164, Karnataka, India, Graduate Studies, Manipal Academy of Higher Education (MAHE), Manipal, 576104, Karnataka, India; John C., Chemistry Department, Christ University, Bengaluru, 560029, Karnataka, India; Shanbhag G.V., Materials Science and Catalysis Division, Poornaprajna Institute of Scientific Research (PPISR), Bidalur Post, Devanahalli, Bengaluru, 562 164, Karnataka, India
- Rights
- Restricted Access
- Relation
- ISSN: 0926860X; CODEN: ACAGE
- Format
- Online
- Language
- English
- Type
- Article
Collection
Citation
Kulal N.; John C.; Shanbhag G.V., “Rational design of bifunctional catalyst from KF and ZnO combination on alumina for cyclic urea synthesis from CO2 and diamine,” CHRIST (Deemed To Be University) Institutional Repository, accessed February 26, 2025, https://archives.christuniversity.in/items/show/16291.