ChemComm
Page 4 of 4
Journal Name
DOI: 10.1039/C4CC09872B
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55%, respectively. The composition of FAME is determined from
the GCꢀMS analysis of the reaction mixture (ESI: Fig S23),
suggesting that soybean oil is composed of 16% stearic, 38% cisꢀ
linoleic, 42% octadecynoic and 4% heptanoic acid.
2
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Table 1. Biofuel synthesis over HMPꢀ1ꢀSO3H
Fatty acid
Acid:MeOH Time, Temp.
(mmol)
Lauric acid 1:50
Product
Yielda
(%)
99
h
K
10 298
3
4
CO2Me
Myristic
acid
1:50
1:50
10 298
10 298
99
98
CO2Me
CO2Me
Palmitic
acid
5
6
R. Z. Chen, J. F. Yao, Q. F. Gu, S. Smeets, C. Baerlocher, H. X. Gu, D.
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9543.
Stearic acid 1:50
12 298
93
94
CO2Me
Oleic acid 1:50
12 298
CO2Me
7
8
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Adipic acid 1:100
12 298
95
CO2Me
CO2Me
Sebacic
acid
1:100
1:50
12 298
24 323
97
9
CO2Me
CO2Me
Lauric
acidb
9
M. J. Ramos, A. Casas, L. Rodríguez , R. Romero and Á. Pérez,
Appl. Catal., A, 2008, 346, 79.
CO2Me
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Adipic
acidb
1:100
24 323
11
CO2Me
CO2Me
a Isolated and purified yield using HMPꢀ1ꢀSO3H as catalyst, H and
13C NMR for all products are given in ESI: Figure S7ꢀS21. bHMPꢀ1
is used as catalyst.
1
Conclusions
We can conclude that a new hypercrosslinked microporous organic
polymer HMPꢀ1 can be synthesized via the FriedelꢀCraft alkylation
between carbazole and α,α′ꢀDibromoꢀpꢀxylene. HMPꢀ1 upon
sulfonation yields a cost effective, highly acidic carbocatalyst HMP
1ꢀSO3H, which showed excellent catalytic activity for biodiesel
production at room temperature. As biodiesel is major alternative to
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SO3H showed very high yields of the biodiesel products under very
mild reactionconditions, sulfonated porous polymer reported herein
may find huge potential as a solid acid catalyst in future.
Acknowledgements.
SB and BB wish to thank CSIR, New Delhi for their respective
Junior Research Fellowship and SPM fellowship. AB wishes to
thank DST, New Delhi for DSTꢀSERB project grant.
Notes and references
Department of Materials Science, Indian Association for the Cultivation of
Science, Jadavpur 700 032, India,
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Electronic Supplementary Information (ESI) available: Experimental and
1
characterization of the catalyst and H and 13C NMR data are reported here.
For details please see DOI: 10.1039/c000000x/
1
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