Zeolite Upgrading of Lignin Feedstocks

Pyrolytic lignin is a major component of the bio-oil that is produced when whole biomass is pyrolyzed. Reacting pyrolytic lignin over HZSM-5 in a fixed-bed reactor 

As a nother means to decrease coke formation, zeolites with larger pore sizes have been studied. It is proposed that increased pore sizes allow larger molecules to reach the catalytic, acidic sites and possibly reduce coke formation. A recent patent uses an Ni-Mo catalyst supported on large pore zeolites (H-Beta, H-Y, H-mordenite) to 

TABLE 9.4 Product selectivity of Pt/HZSM-5 for lignin upgrading as a function of extraction solvent  

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