期刊
BIORESOURCE TECHNOLOGY
卷 349, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2022.126845
关键词
Catalytic co-pyrolysis; Biomass; ZSM-5; Biochar; Pyrolysis products
资金
- National Natural Science Foundation of China [51974123]
- Scientific Research Fund of Hunan Provincial Education Department [19C0903]
- Hunan High Level Talent Gathering Project [2019RS1077, 2020RC5007, 2020RC3051]
- Distinguished Youth Foundation of Hunan Province [2020JJ2018]
- Natural Sciences Foundation of Hunan Agricultural University, China [19QN11]
- Key R&D projects in Hunan Province [2020WK2016, 2020SK2032]
- Ministry of science and technology's key project of science supporting economy [SQ2020YFF0426324]
- Hunan Provincial Key Laboratory of Crop Germplasm Innovation and Resource Utilization Science Foundation [19KFXM12]
This study demonstrates the effectiveness of the cheap and efficient NiCu/biochar catalyst in catalytic co-pyrolysis, leading to increased yield of pyrolysis oil and higher content of valuable products such as hydrocarbons and CNTs.
It is very important to find cheap and efficient catalysts for catalytic co-pyrolysis. Catalytic co-pyrolysis of herb residue (HR) and reused polypropylene (PP) using Ni-X/biochar and ZSM-5 (X = Fe, Co, Cu) was performed to produce pyrolysis oil, pyrolysis gas and carbon nanotubes (CNTs) in a two-stage fixed bed reactor. Bimetallic biochar catalysts exhibited higher catalytic activity due to their higher specific surface area (S-BET) and more strong acid sites. NiCu/biochar significantly increased the yield of pyrolysis oil by enhancing Fischer-Tropsch synthesis. In addition, the stronger secondary cracking capacity of NiCu/biochar resulted in the highest content of hydrocarbons (80.47%) and C6-C11(61.10%), while the availability of higher content of carbon source gas also facilitated the formation of CNTs and H-2 at back-end. The cheap and efficient NiCu/biochar catalyst has great potential in the application of catalytic pyrolysis, which is conducive to the large-scale promotion of biomass pyrolysis technology.
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