PEMBUATAN DAN KARAKTERISASI KATALIS KARBON AKTIF TERSULFONASI SEBAGAI KATALIS RAMAH LINGKUNGAN PADA PROSES HIDROLISIS BIOMASSA
ABSTRACT: Research on a
variety of technologies that can turn biomass into ethanol is done in order to
find most efficient method. A common method used in converting cellulose to
glucose is acid hydrolysis. However, the process still has some shortcomings,
such as the process is still relatively expensive, the conversion is still low
and there is a byproduct of acid waste. These acid wastes can pollute the
environment, as well as the reaction proceeds the separation process a little
more difficult. Seeing these conditions it needed another way to resolve the
issue. There should be a modification of the method of hydrolysis which can
optimize the production of glucose were found to have a high glucose yield,
cheap and eco-friendly. The method is the hydrolysis process using
heterogeneous catalysts such as activated carbon sulfonated sulfonated
activated carbon is made from coconut shell that had been activated previously,
then sulphonated in 98% sulfuric acid in process variables: temperature (30,
50, 70 ° C), normality (4, 7, 10 N), and time (2, 4, 6 hours). And then it is
washed and dried. Characteristic morphology of the catalyst in the form of test
structures with SEM, BET surface area of the catalyst, and test functional
groups by FTIR. The results showed that the best test of a catalyst
characteristics on the process variable 40 °C, 10 N, and sulfonation time for 6
hours. In the test SEM morphological structure of activated carbon catalyst is
more overt, to test obtained BET surface area of 2219,484 m2 / g, and to test
the presence of sulphonate group FTIR vibrational wave numbers legible at 1750
cm-1 and 1379 cm-1.
Penulis: Rizki Amelia,
Harlanto Pandapotan, Purwanto
Kode Jurnal: jpkimiadd130335
