Preparation of ZrO 2 /Na-β and ZrO 2 /H-β catalysts and their catalytic performance for the Meerwein–Ponndorf–Verley reaction of cyclohexanone and isopropanol
ZrO 2 /Na-β and ZrO 2 /H-β catalysts are prepared by the reflux impregnation method and are applied to the Meerwein–Ponndorf–Verley reduction of cyclohexanone and isopropanol. The catalysts are characterized by X-ray diffraction, scanning electron microscopy-energy dispersive spectrum, temperature-p...
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Published in | Journal of chemical research Vol. 47; no. 4 |
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Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
01.07.2023
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Abstract | ZrO
2
/Na-β and ZrO
2
/H-β catalysts are prepared by the reflux impregnation method and are applied to the Meerwein–Ponndorf–Verley reduction of cyclohexanone and isopropanol. The catalysts are characterized by X-ray diffraction, scanning electron microscopy-energy dispersive spectrum, temperature-programmed desorption of ammonia, N
2
isothermal adsorption and desorption, and inductively coupled plasma mass spectrometry. The products are identified by gas chromatography‒mass spectrometry and analyzed by gas chromatography. The experimental results showed that ZrO
2
/H-β exhibits higher catalytic activity for the above Meerwein–Ponndorf–Verley reduction because ZrO
2
/H-β has both Zr
4+
and Al
3+
ion acid centers, which provide the moderately strong acid needed for the reaction. Under optimized conditions, ZrO
2
/H-β(6) is used as the catalyst, and the conversion rate of cyclohexanone was 92.0% as determined by the area-normalized calculation based on cyclohexanone. The catalyst can be regenerated by programmed heating calcination. The conversion rate of cyclohexanone decreased to 79.4% after five recycling cycles, and its service life needs further study to be improved. |
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AbstractList | ZrO
2
/Na-β and ZrO
2
/H-β catalysts are prepared by the reflux impregnation method and are applied to the Meerwein–Ponndorf–Verley reduction of cyclohexanone and isopropanol. The catalysts are characterized by X-ray diffraction, scanning electron microscopy-energy dispersive spectrum, temperature-programmed desorption of ammonia, N
2
isothermal adsorption and desorption, and inductively coupled plasma mass spectrometry. The products are identified by gas chromatography‒mass spectrometry and analyzed by gas chromatography. The experimental results showed that ZrO
2
/H-β exhibits higher catalytic activity for the above Meerwein–Ponndorf–Verley reduction because ZrO
2
/H-β has both Zr
4+
and Al
3+
ion acid centers, which provide the moderately strong acid needed for the reaction. Under optimized conditions, ZrO
2
/H-β(6) is used as the catalyst, and the conversion rate of cyclohexanone was 92.0% as determined by the area-normalized calculation based on cyclohexanone. The catalyst can be regenerated by programmed heating calcination. The conversion rate of cyclohexanone decreased to 79.4% after five recycling cycles, and its service life needs further study to be improved. |
Author | Dong, Lin-hui Qiu, Jun Meng, Fan-fei Liu, Li-ye |
Author_xml | – sequence: 1 givenname: Lin-hui surname: Dong fullname: Dong, Lin-hui organization: College of Chemical & Pharmaceutical Engineering, Jilin Institute of Chemical Technology, Jilin, People’s Republic of China – sequence: 2 givenname: Fan-fei surname: Meng fullname: Meng, Fan-fei organization: School of Materials Science and Engineering, Changchun University of Science and Technology, Changchun, People’s Republic of China – sequence: 3 givenname: Li-ye surname: Liu fullname: Liu, Li-ye organization: College of Chemical & Pharmaceutical Engineering, Jilin Institute of Chemical Technology, Jilin, People’s Republic of China – sequence: 4 givenname: Jun surname: Qiu fullname: Qiu, Jun organization: College of Chemical & Pharmaceutical Engineering, Jilin Institute of Chemical Technology, Jilin, People’s Republic of China |
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Cites_doi | 10.1006/jcis.2001.7519 10.1055/s-1994-25625 10.1016/j.jcat.2014.10.010 10.1016/j.cej.2019.122281 10.1016/j.apcata.2004.12.048 10.1039/C5RA11857C 10.1016/j.jcis.2004.08.077 10.1016/j.apcata.2005.04.002 10.1023/A:1009002921067 10.1016/S1381-1169(01)00081-4 10.1016/j.catcom.2019.105845 10.1016/S0021-9517(02)93744-9 10.1016/0021-9517(84)90106-4 10.1016/j.cattod.2005.02.027 10.1016/S0926-860X(02)00213-2 10.1039/D1NJ00936B 10.1007/s11144-021-02123-4 10.1016/S0021-9517(03)00014-9 10.3390/catal8110539 10.1006/jcat.2000.3157 10.1016/S1872-2067(21)63924-4 10.1007/s10562-008-9446-0 |
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Title | Preparation of ZrO 2 /Na-β and ZrO 2 /H-β catalysts and their catalytic performance for the Meerwein–Ponndorf–Verley reaction of cyclohexanone and isopropanol |
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