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A selective synthesis of 1-phenylethanol and γ-butyrolactone through coupling processes over Cu/MgO catalysts
A novel coupling route highlighting the combination of acetophenone hydrogenation to 1-phenylethanol and 1,4-butanediol dehydrogenation to γ-butyrolactone in vapor phase over Cu/MgO catalysts, wherein, H 2 produced from 1,4-butanediol dehydrogenation is effectively utilized in acetophenone hydrogena...
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Published in: | Journal of molecular catalysis. A, Chemical Chemical, 2012-03, Vol.355, p.180-185 |
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Main Authors: | , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | A novel coupling route highlighting the combination of acetophenone hydrogenation to 1-phenylethanol and 1,4-butanediol dehydrogenation to γ-butyrolactone in vapor phase over Cu/MgO catalysts, wherein, H
2 produced from 1,4-butanediol dehydrogenation is effectively utilized in acetophenone hydrogenation rather than from external source and 100% selectivity towards desired products.
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► In situ production of hydrogen and its in situ utilization. ► Coupling of 1,4-butanediol dehydrogenation and acetophenone hydrogenation is new. ► Selective production of 1-phenylethanol is a potential application. ► The in situ produced hydrogen need not be purified and stored. ► The overall process is economic, safe and environmentally benign.
A novel coupling route highlighting the combination of hydrogenation of acetophenone and dehydrogenation of 1,4-butanediol in vapor phase conditions over Cu–MgO catalyst is highly advantageous in terms of avoiding external pumping of H
2 and maintaining the formation of 1-phenylethanol and γ-butyrolactone, the desired products, respectively, in good amounts at atmospheric pressure. Three Cu/MgO catalysts with 5, 10, and 15
wt.% Cu loadings are prepared by impregnation method and characterized by BET surface area, temperature programmed reduction, XRD, N
2O pulse chemisorption, transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS). Among the studied Cu/MgO catalysts, 10
wt.% Cu/MgO catalyst exhibited superior activity with nearly 100% selectivity of PhE and GBL. The higher yields of the products are observed on the 10
wt.% Cu/MgO in single and combined reactions compared to the other two catalysts, it may be due to the higher dispersion, smaller Cu particle size and more number of Cu
0/Cu
+ species at the surface. |
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ISSN: | 1381-1169 1873-314X |
DOI: | 10.1016/j.molcata.2011.12.014 |