PREPARATION OF LIGHT AROMATIC HYDROCARBONS FROM CHINESE FIR CATALYZED BY BIMETALLIC CO-MODIFIED ZEOLITE

Wang Hantao; Liu Qian; Shen Dekui

doi:10.19912/j.0254-0096.tynxb.2021-0777

PDF(3724 KB)

Acta Energiae Solaris Sinica ›› 2023, Vol. 44 ›› Issue (1) : 346-352. DOI: 10.19912/j.0254-0096.tynxb.2021-0777

PREPARATION OF LIGHT AROMATIC HYDROCARBONS FROM CHINESE FIR CATALYZED BY BIMETALLIC CO-MODIFIED ZEOLITE

Wang Hantao, Liu Qian, Shen Dekui

Author information +

History +

Abstract

Aromatic hydrocarbons were prepared from Cunninghamia lanceolata under the action of metal modified molecular sieves. Pyrolysis and gas chromatography-mass spectrometry were used for pyrolysis. The experimental results show that 5% Zn/HZSM-5 in the modification of single metal reached the best catalytic effect, and the relative peak area of aromatic hydrocarbon reached the highest 34.17%, and the yield of benzene and xylene was the highest. Compared with single metal modification, 1% Zn-4% Co/HZSM-5 increased the yield of PAHs, so that benzene and toluene were 1.19 times and 1.21 times of the original. The yield of macromolecular aromatics such as naphthalene and methyl naphthalene decreased significantly, as well as the yield of oxides. It is verified that the combination of different metals will produce a certain synergistic effect, and the addition of bimetallic modified molecular sieves in the pyrolysis process is beneficial to the improvement of pyrolysis oil grade. The possible mechanism of the yield change of aromatic hydrocarbons and oxygen-containing organic compounds was described by using NH₃-TPD.

Key words

biomass / catalytic cracking / aromatic hydrocarbons / zeolite molecular sieve / chemical modification

Cite this article

EndNote

Ris (Procite)

Bibtex

Download Citations

Wang Hantao, Liu Qian, Shen Dekui. PREPARATION OF LIGHT AROMATIC HYDROCARBONS FROM CHINESE FIR CATALYZED BY BIMETALLIC CO-MODIFIED ZEOLITE[J]. Acta Energiae Solaris Sinica. 2023, 44(1): 346-352 https://doi.org/10.19912/j.0254-0096.tynxb.2021-0777

References

[1] FERMOSO J, HERNANDO H, JANA P, et al.Lamellar and pillared ZSM-5 zeolites modified with MgO and ZnO for catalytic fast-pyrolysis of eucalyptus woodchips[J]. Catalysis today, 2016, 277(1): 171-181.
[2] EVANS F, BUCKHAM A.Accurate temperature control is vital to tooling efficiency[J]. Preprints-American Chemical Society, division of petroleum chemistry(United States), 1987, 32(2): 41-42.
[3] TAMIYAKUL S, UBOLCHAROEN W, TUNGASMITA D, et al.Conversion of glycerol to aromatic hydrocarbons over Zn-promoted HZSM-5 catalysts[J]. Catalysis today, 2015, 256(2): 325-335.
[4] ILIOPOULOU E, STEFANIDIS S, KALOGIANNIS K, et al.Catalytic upgrading of biomass pyrolysis vapors using transition metal-modified ZSM-5 zeolites[J]. Applied catalysis B: environmental, 2012, 127(1): 281-290.
[5] SUN L Z, ZHANG X D, CHEN L.Comparision of catalytic fast pyrolysis of biomass to aromatic hydrocarbons over ZSM-5 and Fe/ZSM-5 catalystss[J]. Journal of analytical and applied pyrolysis, 2016, 121: 342-346.
[6] ZHENG Y W, WANG F, YANG X Q.Study on aromatics production via the catalytic pyrolysis vapor upgrading of biomass using metal-loaded modified H-ZSM-5[J]. Journal of analytical and applied pyrolysis, 2017, 126: 169-179.
[7] SARAÇOĞLU E, UZUN B, APAYDIN-VAROL E, et al. Upgrading of fast pyrolysis bio-oil over Fe modified ZSM-5 catalyst to enhance the formation of phenolic compoundss[J]. International journal of hydrogen energy, 2017, 42(33): 21476-21486.
[8] LI Z Y, ZHONG Z P, ZHANG B, et al.Catalytic fast co-pyrolysis of waste greenhouse plastic films and rice husk using hierarchical micro-mesoporous composite molecular siev[J]. Waste management, 2020, 102(2): 561-568.
[9] MAISANO S, URBANI F, MONDELLO N, et al.Catalytic pyrolysis of mediterranean sea plant for bio-oil production[J]. International journal of hydrogen energy, 2017, 42(1): 28082-28092.
[10] DÉPARROIS N, SINGH P, BURRA K G, et al. Syngas production from co-pyrolysis and co-gasification of polystyrene and paper with CO₂[J]. Applied energy, 2019,246(2): 1-10.
[11] CHANDLER D S, SEUFITELLI G V S, RESENDE F L P. Catalytic route for the production of alkanes from hydropyrolysis of biomass[J]. Energy & fuels, 2020, 34(10): 12573-12585.
[12] WANG K G, KIM K H, BROWN R C.Catalytic pyrolysis of individual components of lignocellulosic biomass[J]. Green chemistry, 2014, 16(2): 727-735.
[13] ZHANG H Y, SHAO S S, LUO M M, et al.The comparison of chemical liquid deposition and acid dealumination modified ZSM-5 for catalytic pyrolysis of pinewood using pyrolysis-gas chromatography/mass spectrometry[J]. Bioresource technology, 2017, 244(1): 726-732.
[14] 朱玲莉, 仲兆平, 王佳, 等. 基于PY-GC/MS的生物质组分间相互作用的热解实验[J]. 化工进展, 2016, 35(12): 3879-3884.
ZHU L L,ZHONG Z P, WANG J, et al.Pyrolysis of biomass based on PY-GC/MS[J]. Chemical industry and engineering progress, 2016, 35(12): 3879-3884.