Catalytic fast pyrolysis zeolite catalysts

Catalytic fast pyrolysis Re-USY, H-ZSM-5, P-zeolite Catalyst ensures further cracking of the pyrolysis intermediates and oxygen removal, resulting in the formation of hydrocarbons [61]... 

Yu YQ, Li XY, Su L, Zhang Y, Wang YJ, Zhang HZ (2012) The role of shape selectivity in catalytic fast pyrolysis of lignin with zeolite catalysts. Appl Catal A 447 115... 

CFP [Catalytic Fast Pyrolysis] A process for converting lignocellulosic biomass into a mixture of aromatic hydrocarbons, notably / -xylene. It uses a fluidized bed at 500°C-1000°C and a modified ZSM-5 zeolite catalyst. Invented by G.W. Huber and colleagues at the University of Massachusetts-Amherst and licensed through Anellotech. The first plant is scheduled for completion in 2014. 

During the in-bed catal54ic fast pyrolysis, the pyrolysis is carried out in the direct presence of the zeolite, that is the substrate and the catalyst are in physical contact during pyrolysis. Compared to cataljdic upgrading of pyrolysis vapors, the zeolite impact in catalytic fast pyrolysis is much higher due to a better contact of the substrate and intermediates with the zeoUte. A disadvantage of catalytic fast pyrolysis is the higher coke deposition on the... 

As mentioned previously zeohte catalysts have been used for the pyrolysis of plastics. A study by Ojha and Vinu converting polystyrene via catalytic fast pyrolysis using eight different zeohtes (ZSM-5, zeohte-P, and zeolite-Y families) identified that valuable chemicals, such as benzene, can be produced (Ojha and Vinu, 2015). Benzene yields depended on important zeohte properties such Si Al ratio, pore volume. 

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