Co-pyrolysis of poplar wood sawdust and high-density polyethylene at a mass ratio of 1:1 (wt.%) over acid-modified ZSM-5 was studied by Py-GC/MS at catalyst to feedstock mass ratio of 1:1 (wt.%) to enhance hydrocarbon formation in the pyrolytic vapour. Catalysts were modified by wet impregnation using sulfuric acid (0.1 M, 0.3 M, 0.5 M and 0.7 M). Results showed that acid treatment affects the catalytic activity of ZSM-5 by changing the amount of acid sites. Co-pyrolysis with HDPE resulted in high olefin relative content (53.32%) than pyrolysis of poplar (16.6%) and significantly reduces the amount of oxygenates except alcohol. In catalytic co-pyrolysis over acid-modified ZSM-5, the share of olefin was between 56.20% and 59.7%, whereas the lowest amount was 49.53% over P-ZSM-5. The alkane relative content over acid-modified ZSM-5 was in the range of 23.29–25.96% and higher than that with P-ZSM-5 (21.18%). Importantly, ZSM-5 (0.5 M) was most selective for aromatic hydrocarbon (12.72%), leading to the maximum share of hydrocarbon of 93.18% when the lowest value was 76.84% over parent ZSM-5. Furthermore, ZSM-5 (0.5 M) showed better deoxygenation among catalysts used in this study. This research could be suggested as a reference for the research of co-pyrolysis of biomass and plastic.

通过Py-GC / MS研究了催化剂与原料的质量比为1：1的酸改性ZSM-5与杨木锯末和高密度聚乙烯的质量比为1：1（wt。％）的共热解（wt。％）以增强热解蒸气中的烃形成。通过使用硫酸（0.1M，0.3M，0.5M和0.7M）的湿浸渍来改性催化剂。结果表明，酸处理通过改变酸位的数量影响ZSM-5的催化活性。与HDPE的共热解比杨木的热解（16.6％）产生的烯烃相对含量高（53.32％），并且显着减少了除酒精外的含氧化合物的量。在酸改性的ZSM-5上进行催化共热解时，烯烃的含量在56.20％至59.7％之间，而最低的含量是P-ZSM-5的49.53％。酸改性的ZSM-5的烷烃相对含量在23.29-25.96％范围内，高于P-ZSM-5的烷烃相对含量（21.18％）。重要的是，ZSM-5（0.5 M）对芳烃的选择性最高（12.72％），从而导致烃的最大份额为93.18％，而最低值是ZSM-5的76.84％。此外，在本研究中使用的催化剂中，ZSM-5（0.5 M）表现出更好的脱氧性。该研究可为生物质与塑料共热解研究提供参考。