Next Article in Journal
Palm Biochar-Based Sulphated Zirconium (Zr-AC-HSO3) Catalyst for Methyl Ester Production from Palm Fatty Acid Distillate
Previous Article in Journal
Silica Nanoflowers-Stabilized Pickering Emulsion as a Robust Biocatalysis Platform for Enzymatic Production of Biodiesel
Previous Article in Special Issue
Carbozincation of Substituted 2-Alkynylamines, 1-Alkynylphosphines, 1-Alkynylphosphine Sulfides with Et2Zn in the Presence of Catalytic System of Ti(O-iPr)4 and EtMgBr
Open AccessArticle

Nickel-Modified TS-1 Catalyzed the Ammoximation of Methyl Ethyl Ketone

College of Chemistry and Material Science, Shandong Agricultural University, Tai’an 271018, China
Authors to whom correspondence should be addressed.
Catalysts 2019, 9(12), 1027;
Received: 5 November 2019 / Revised: 28 November 2019 / Accepted: 29 November 2019 / Published: 4 December 2019
(This article belongs to the Special Issue Metal-Based Catalysts in Organic Synthesis)
In this paper, five kinds of transition metal-modified titanium silicalite-1 (M-TS-1) were prepared by an ultrasonic impregnation method. We studied their catalytic performances in the ammoximation of methyl ethyl ketone (MEK). The various M-TS-1 catalysts revealed distinct differences in their MEK ammoximation activity. The nickel-modified TS-1 (Ni-TS-1), especially 3 wt % Ni-TS-1, exhibited a satisfactory conversion of MEK (99%) associated with a high selectivity of methyl ethyl ketoxime (MEKO) (99.3%), which was 6% higher than that of TS-1 under the same conditions. Moreover, the catalyst showed excellent recyclability and the reactivity could be completely recovered after regeneration. The catalysts were characterized by Powder X-ray Diffraction (XRD), Fourier Transformed Infrared Spectra (FT-IR), X-ray photoelectron spectroscopy (XPS), and so on. It was demonstrated that the skeleton structure of TS-1 was basically maintained and the electron environment of the Ti active site was changed after the nickel modification, which can optimize the adsorption capacity and the activation for H2O2. Meanwhile, the surface nickel species reduced the surface acidity of the catalyst, which provided an appropriate pH and inhibited the deep oxidation of oxime.
Keywords: TS-1; nickel-modified; methyl ethyl ketone; ammoximation; methyl ethyl ketoxime TS-1; nickel-modified; methyl ethyl ketone; ammoximation; methyl ethyl ketoxime
Show Figures

Graphical abstract

MDPI and ACS Style

Yang, D.; Wang, H.; Wang, W.; Peng, S.; Yang, X.; Xu, X.; Jia, S. Nickel-Modified TS-1 Catalyzed the Ammoximation of Methyl Ethyl Ketone. Catalysts 2019, 9, 1027.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

Back to TopTop