Biomass:polystyrene co-pyrolysis coupled with metal-modified zeolite catalysis for liquid fuel and chemical production
Biomass:polystyrene co-pyrolysis coupled with metal-modified zeolite catalysis for liquid fuel and chemical production
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DOI：
10.1007/s10163-021-01334-0
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发表时间：
2022-01-04
影响因子：
3.1
通讯作者：
Williams, Paul T.
中科院分区：
文献类型：
--
作者：
Dyer, Andrew C.;Nahil, Mohamad A.;Williams, Paul T.
生物质和废聚苯乙烯塑料（比例为1：1）在两级固定床反应器系统中共热解，然后催化，以生产用于生产液体燃料和芳香族化学品的升级生物油。研究的催化剂是用不同金属（Ga、Co、Cu、Fe和Ni）浸渍的ZSM-5，以确定它们对生物油改质的影响。结果表明，不同的金属添加量对产品油、气的收率和组成有不同的影响。Ni-ZSM-5和Co-ZSM-5催化剂对生物油的脱氧主要是通过脱羧和脱羰基生成CO2和CO，而ZSM-5、Ga-ZSM-5、Cu-ZSM-5和Fe-ZSM-5催化剂则具有较高的水产率和较低的CO2和CO，表明加氢脱氧占主导地位。与未改性的ZSM-5相比，Co-ZSM-5、Cu-ZSM-5、Fe-ZSM-5和Ni-ZSM-5催化剂的产物油中单环芳烃的产率增加。而Ga-ZSM-5催化剂则使单环芳烃化合物还原，但多环芳烃产率最高。较高的生物质与聚苯乙烯的比例（4：1）导致油产率显著降低，从而导致气体产率增加。
Biomass and waste polystyrene plastic (ratio 1:1) were co-pyrolysed followed by catalysis in a two-stage fixed bed reactor system to produce upgraded bio-oils for production of liquid fuel and aromatic chemicals. The catalysts investigated were ZSM-5 impregnated with different metals, Ga, Co, Cu, Fe and Ni to determine their influence on bio-oil upgrading. The results showed that the different added metals had a different impact on the yield and composition of the product oils and gases. Deoxygenation of the bio-oils was mainly via formation of CO2 and CO via decarboxylation and decarbonylation with the Ni-ZSM-5 and Co-ZSM-5 catalysts whereas higher water yield and lower CO2 and CO was obtained with the ZSM-5, Ga-ZSM-5, Cu-ZSM-5 and Fe-ZSM-5 catalysts suggesting hydrodeoxygenation was dominant. Compared to the unmodified ZSM-5, the yield of single-ring aromatic compounds in the product oil was increased for the Co-ZSM-5, Cu-ZSM-5, Fe-ZSM-5 and Ni-ZSM-5 catalysts. However, for the Ga-ZSM-5 catalyst, single-ring aromatic compounds were reduced, but the highest yield of polycyclic aromatic hydrocarbons was produced. A higher biomass to polystyrene ratio (4:1) resulted in a markedly lower oil yield with a consequent increased yield of gas.