AAO/SBA-15-SO3H catalyst was prepared successfully by the
co-condensing and grafting methods, and the performance of the
Fig. 3. The TEM picture of AAO/SBA-15-SO3H.
Fig. 4. FT-IR spectra of solid acid catalysts packing (a) AAO/SBA-15, (b) AAO/SBA-15-
SH, (c) AAO/SBA-15-SO3H(G), and (d) AAO/SBA-15-SO3H(C).
Table 1
Catalytic performance of the catalysts.
Catalysts Conversion (%) Selectivity (%) Yield (%)
None 17 13 2
AAO 64 45 29
AAO/SBA-15 85 47 40
AAO/SBA-15-SH 80 29 23
AAO/SBA-15-SO3H(C) 90 74 67
AAO/SBA-15-SO3H(G) 99 55 49
H2SO4 (4%) 92 71 65
SBA-15-SO3H 92 74 68
1398 D. Hua et al. / Journal of Industrial and Engineering Chemistry 19 (2013) 1395–1399
catalyst was tested in xylose to furfural. Results show that the
performance of the catalyst prepared by the co-condensing
method is better than that of the catalyst prepared by the
grafting method. The conversion of xylose was above 90%, and
the selectivity to furfural was 74%. Reaction to xylose to furfural
is related to the amount of SO3H, and SO3H is the active site.
Additionally, the cause of the deactivation of the AAO/SBA-15-
SO3H(C) catalyst is attributed to the formation of by-products
resulting from the oligomerisation/polymerization of furfural
and condensation of intermediates of the dehydration of xylose.
For the spent SBA-15-SO3H(C) catalyst, the catalytic activity is
completely recovered after treatment by H2O2. Solid acid
catalyst packing can unite catalysis and extraction in a packed
extraction column, which is a good chance for the production of
furfural.
AAO/SBA-15-SO3H catalyst was prepared successfully by theco-condensing and grafting methods, and the performance of theFig. 3. The TEM picture of AAO/SBA-15-SO3H.Fig. 4. FT-IR spectra of solid acid catalysts packing (a) AAO/SBA-15, (b) AAO/SBA-15-SH, (c) AAO/SBA-15-SO3H(G), and (d) AAO/SBA-15-SO3H(C).Table 1Catalytic performance of the catalysts.Catalysts Conversion (%) Selectivity (%) Yield (%)None 17 13 2AAO 64 45 29AAO/SBA-15 85 47 40AAO/SBA-15-SH 80 29 23AAO/SBA-15-SO3H(C) 90 74 67AAO/SBA-15-SO3H(G) 99 55 49H2SO4 (4%) 92 71 65SBA-15-SO3H 92 74 681398 D. Hua et al. / Journal of Industrial and Engineering Chemistry 19 (2013) 1395–1399catalyst was tested in xylose to furfural. Results show that theperformance of the catalyst prepared by the co-condensingmethod is better than that of the catalyst prepared by thegrafting method. The conversion of xylose was above 90%, andthe selectivity to furfural was 74%. Reaction to xylose to furfuralis related to the amount of SO3H, and SO3H is the active site.Additionally, the cause of the deactivation of the AAO/SBA-15-SO3H(C) catalyst is attributed to the formation of by-productsresulting from the oligomerisation/polymerization of furfuraland condensation of intermediates of the dehydration of xylose.For the spent SBA-15-SO3H(C) catalyst, the catalytic activity iscompletely recovered after treatment by H2O2. Solid acidcatalyst packing can unite catalysis and extraction in a packedextraction column, which is a good chance for the production offurfural.
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