Mesityl Oxide Reduction by Using Acid-Modified Phonolite Supported NiW, NiMo, and CoMo Catalysts
| Autor: | Héctor de Paz Carmona, José Miguel Hidalgo Herrador, Zdeněk Tišler, Jakub Frątczak, Ivana Hradecká, Jaroslav Kocík, Romana Velvarská |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Ketone
Hydrogen chemistry.chemical_element phonolite reduction TP1-1185 mesityl oxide Catalysis Autoclave chemistry.chemical_compound Mesityl oxide Physical and Theoretical Chemistry methyl isobutyl ketone QD1-999 chemistry.chemical_classification autoclave Chemistry Chemical technology Porosimetry Methyl isobutyl ketone Pentane hydrotreatment Nuclear chemistry catalyst |
| Zdroj: | Catalysts Volume 11 Issue 9 Catalysts, Vol 11, Iss 1101, p 1101 (2021) |
| ISSN: | 2073-4344 |
| DOI: | 10.3390/catal11091101 |
| Popis: | Mesityl oxide is standardly used to produce methyl iso butyl ketone but it can be also used to produce other useful compounds. Three catalysts were used for the reaction of the mesityl oxide reduction. They were NiW, NiMo, and CoMo supported on phonolite modified by HCl (metals/Ph-HCl). The fresh catalysts were characterized by XRD, XRF, BET surface, Hg porosimetry, SEM, H2-TPR, NH3-TPD, CO2-TPD. The materials were directly used, previously reduced in H2 or sulfided for the mesityl oxide reduction under H2 atmosphere. The reaction was performed in an autoclave at T = 375 °C, p = 50 bar (H2), and TOS = 1.5 h. The products were analyzed by GC/MS, GC/FID-TCD, ATR. The main products were methyl isobutyl ketone, 2-methyl pentane, and 2-methyl-2-pentene. Sulfided metal catalysts were the most active in the methyl isobutyl ketone, where the NiWSx/Ph-HCl catalyst showed the highest activity. For the non-previously-activated and hydrogen activated catalysts the most active catalyst was the NiMo/Ph-HCl for the production of methyl isobutyl ketone. The catalyst CoMo/Ph-HCl activated in hydrogen was the most active for the production of 2-methyl pentane compared to the other two hydrogen-activated materials. |
| Databáze: | OpenAIRE |
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