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Acylation of Anisole Catalyzed by Hierarchical Porous Hβ Zeolite Modified with Cr
- Source :
- Chemical Research in Chinese Universities. 34:877-881
- Publication Year :
- 2018
- Publisher :
- Springer Science and Business Media LLC, 2018.
-
Abstract
- Modified hierarchical porous Hβ zeolite was obtained by metal modification of Hβ zeolite, which was treated with alkaline solution, and the catalysts before and after modification were characterized by means of X-ray diffraction(XRD), nitrogen adsorption-desorption, scanning electron microscopy(SEM), X-ray fluorescence(XRF), NH3 temperature-programmed desorption and Fourier-transform infrared spectroscopy(FTIR). The activities of acylation of anisole with acetic anhydride were also investigated. The results show that the Hβ zeolite, which was treated with alkaline solution has microporous and mesoporous structures that could improve the diffusion performance of chemical reaction. The amount of acid was modulated with metal modification. The Hβ zeolite modified by 5%(mass fraction) metal chromium had the best catalytic performance. The conversion of acetic anhydride acylation was 93.01% under the optimal conditions, which was higher than that of other catalysts. The catalyst not only showed good activity, but also exhibited a stable performance in regeneration tests.
- Subjects :
- 02 engineering and technology
General Chemistry
Microporous material
010402 general chemistry
021001 nanoscience & nanotechnology
Anisole
01 natural sciences
0104 chemical sciences
Catalysis
Acylation
Acetic anhydride
chemistry.chemical_compound
chemistry
Desorption
0210 nano-technology
Mesoporous material
Zeolite
Nuclear chemistry
Subjects
Details
- ISSN :
- 22103171 and 10059040
- Volume :
- 34
- Database :
- OpenAIRE
- Journal :
- Chemical Research in Chinese Universities
- Accession number :
- edsair.doi...........044ddf082ebcd6cbea3fd9038087be80