Cellulose Conversion to 5 Hydroxymethyl Furfural (5-HMF) Using Al-Incorporated SBA-15 as Highly Efficient Catalyst

Figure 3

TEM images of (a) SBA-15 and (b) xAl/SBA-15, (c) xAl/SBA-15, and (d) xAl/SBA-15.

(a)

(b)

(c)

(d)