Jiang et al. Sci China Chem January (2016) Vol.59 No.1
5
Table 2 Hydroamination of acetone with different catalysts over 153 °C
1
2
3
4
5
6
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Conversion
(%)
Catalyst
isopropylamine
DIPA
7.00
isopropanol
13.94
Ni/Al2O3
Raney
Ni/Al2O3
Granular
Raney Ni
Raney Ni/PA
99.38
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79.06
71.63
3.83
24.54
7
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96.49
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56.83
37.95
3.52
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Figure 6 Schematic representation of prevention process of NH3 from
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4 Conclusions
A newly-developed polyamide supported Raney Ni catalyst,
which is suitable for use in fix-bed reactions with high se-
lectivity, can make the selective hydrogenation of acetone
to isopropanol very clean. The two main byproducts (iso-
propyl ether and methyl-iso-butyl carbinol) could be elimi-
nated completely, which could be attributed to the adsorp-
tion effect of polyamide support and a model has been pro-
posed. The proposed model was further proved by hy-
droamination reaction of acetone. Based on this study, we
believe that the catalytic selectivity of Raney catalysts and
other hydrogenation catalysts in chemical industry, oil re-
fining industry, pharmaceutical industry, and food industry,
could be greatly improved by selecting appropriate polymer
support according to the features of specific reactions.
Conflict of interest The authors declare that they have no conflict of
interest.