石脑油
催化作用
塑料废料
循环经济
开裂
热解
催化裂化
废物管理
材料科学
环境科学
化学工程
制浆造纸工业
化学
工程类
有机化学
复合材料
生态学
生物
作者
Leilei Dai,Hailong Zhao,Nan Zhou,Kirk Cobb,Paul Chen,Yanling Cheng,Hanwu Lei,Rongge Zou,Yunpu Wang,Roger Ruan
标识
DOI:10.1016/j.resconrec.2023.107154
摘要
Catalytic cracking of plastics into naphtha as a substitute for new plastic production has the potential to contribute to the plastic circular economy. However, mitigating catalyst deactivation in large-scale processes poses a significant challenge. Here, we demonstrate a remarkable improvement (4.3 × to 12.3 ×) in catalyst lifetime by utilizing hierarchical ZSM-5 catalysts compared to conventional analogues. Increasing the Brønsted acid concentration from 0 to 302 µmol/g enhances catalyst lifetime by over 46 × and boosts cumulative aromatic selectivity from 6 to 73%. Catalyst characterization reveals the development of significant voids after modification, enhancing molecular transport within the hierarchical ZSM-5. Economic analysis shows a pilot system with a 10 ton/day capacity yielding an annual profit of $344,999 and an 11.5% return on investment. Life cycle assessment indicates a reduction of 817.6 kg CO2 eq compared to traditional plastic-to-fuels technology. These findings advance the plastic circular economy and bring us closer to commercial implementation.
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