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http://hdl.handle.net/10773/43706
Title: | Bulky olefin epoxidation under mild conditions over Mo-based oxide catalysts |
Author: | Gomes, Diana M. Yao, Xingyu Neves, Patrícia Pinna, Nicola Russo, Patrícia A. Valente, Anabela A. |
Keywords: | Olefin Epoxidation Molybdenum Metal oxide |
Issue Date: | 2-Jan-2024 |
Publisher: | Royal Society of Chemistry |
Abstract: | Molybdenum-based epoxidation catalysts are among the most investigated since the homogeneous Mo-based catalytic process claimed by Halcon International Inc. for liquid phase olefin epoxidation (EPO). While homogeneous Mo-based catalytic technologies reached industrial implementation for olefin EPO, the same does not apply for heterogeneous Mo-based ones, which have not reached industrial implementation (e.g., to meet catalyst productivity and stability requirements). In this work, EPO nanocatalysts consisting of oxides possessing molybdenum and M = Ta, Nb or W, were prepared via a simple, versatile methodology. The influence of the material synthesis conditions on the material properties was investigated to meet superior catalytic performances. Promising Mo-based solid catalysts were obtained which promoted the EPO of relatively bulky olefins such as fatty acid methyl esters (methyl oleate, methyl linoleate), using tert-butyl hydroperoxide as oxidant under mild conditions; e.g., the materials Mo(75D)M-0.3 with M = Nb, W (20 min synthesis using 75 at.% Mo relative to M, and MoO2Cl2 as precursor), obtained in a fast synthesis of 0.3 h, led to 92-96 % epoxide selectivity at 84-95 % methyl oleate conversion, 70 °C. To the best of our knowledge, these are the first Mo,M oxides reported for these reactions. |
Peer review: | yes |
URI: | http://hdl.handle.net/10773/43706 |
DOI: | 10.1039/D3CY01299A |
ISSN: | 2044-4753 |
Appears in Collections: | CICECO - Artigos DQ - Artigos |
Files in This Item:
File | Description | Size | Format | |
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d3cy01299a.pdf | 2.02 MB | Adobe PDF | View/Open |
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