Molybdenum Carbonyl Grafted on Amine-Functionalized MCM-22 as Potential Catalyst for Iso -Eugenol Oxidation
- PDF / 6,004,775 Bytes
- 14 Pages / 595.276 x 790.866 pts Page_size
- 97 Downloads / 188 Views
Molybdenum Carbonyl Grafted on Amine‑Functionalized MCM‑22 as Potential Catalyst for Iso‑Eugenol Oxidation Preeti Sahu1 · Alex Tincy1 · Awadakkam Sreenavya1 · Ganapati Shanbhag2 · Ayyamperumal Sakthivel1 Received: 19 June 2020 / Accepted: 4 September 2020 © Springer Science+Business Media, LLC, part of Springer Nature 2020
Abstract Different concentrations of molybdenum carbonyl were incorporated on the surface of amine-functionalized MCM-22. The obtained samples were thoroughly characterized by Fourier-transform infrared spectroscopy (FTIR), powder X-Ray diffraction (XRD), high-resolution transition electron microscopy (HRTEM), N 2-sorption and thermo-gravimetric analysis (TGA) methods. HRTEM images confirmed the uniform distribution of active molybdenum species on the functionalized MCM-22. The resultant materials were explored for liquid-phase oxidation of iso-eugenol at ambient reaction conditions. The catalyst with 6 wt% Mo(CO)6 loaded materials showed comparable conversion (87%) with vanillin as the major product (selectivity of 61%) for the chosen reaction. The better catalytic activity of MCM-22-DA-Mo catalyst having 6 wt% loading of Mo carbonyl could be due to the uniform distribution of molybdenum species on MCM-22-DA surface. Importantly, the catalyst retained its activity even after several runs. Graphic Abstract Molybdenum carbonyl were incorporated on the surface of amine-functionalized MCM-22 by the post-synthesis method. The resultant MCM-22-DA-Mo showed promising activity on iso-eugenol oxidation with a conversion of 87%.
Keywords Zeolites · MCM-22 · Aminosilane grafting · Molybdenum carbonyl · Iso-eugenol oxidation · Vanillin Preeti Sahu and Alex Tincy have equally contributed. * Ayyamperumal Sakthivel [email protected]; [email protected] 1
Inorganic Materials & Heterogeneous Catalysis Laboratory, Department of Chemistry, School of Physical Sciences, Central University of Kerala, Kasaragod, Kerala 671320, India
Materials Science & Catalysis Division, Poornaprajna Institute of Scientific Research (PPISR), Bidalur Post, Devanahalli, Bengaluru 562164, India
2
1 Introduction The historical significance of catalysis in the industrial processes has been known over the decades [1]. Heterogeneous catalysts play a pivotal role in fine chemicals, cosmetics, biochemical, and petroleum industries [2]. In particular, heterogeneous catalysts based on inorganic oxide, such as silica, alumina, hydrotalcite, clay, zeolites and zeolite-like microporous materials, polymers, and other mesoporous
13
Vol.:(0123456789)
materials are widely used [3]. Among them, zeolites and zeolite-like molecular sieves have shown a tremendous impact on petroleum and petrochemical industries as well as environmental processes [4]. Zeolites emerge with their capability for the sustainability along with cost-effectiveness and have potential for the innumerable advance applications such as thermal energy storage, biomass conversion, CO2 capture, air purification redressal, etc. [5]. Besides, the importa
Data Loading...
