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Sustainable production of aromatics-rich gasoline stock from bio-glycerol over hierarchically porous Zn-decorated HZSM-5 catalyst

Author

Listed:
  • Singh, Vijendra
  • Arumugam, Selvamani
  • Tathod, Anup Prakash
  • Kuldeep,
  • Vempatapu, Bhanu Prasad
  • Viswanadham, Nagabhatla

Abstract

In the present study, we report an efficient vapor-phase catalytic process operating on a hierarchically porous non-noble metal decorated HZSM-5 catalyst to produce high octane aromatics-rich hydrocarbon-stock and valuable fuel gases from crude-glycerol in the presence of methanol. A novel hierarchically porous HZSM-5 catalyst (synthesized by 0.2 M alkali solution followed by 1 wt% Zn loading) exhibited 100% carbon conversion of glycerol-methanol with superior aromatics selectivity >80% with a prolonged catalyst lifetime. Here, the combination of well-preserved micropores and optimum Lewis acidity observed in the synthesized catalyst are collectively responsible for enhanced aromatics selectivity, while mesopores of the catalyst help in the ease of diffusion of bulky product molecules (including coke precursor) to facilitate improved catalyst lifetime. The liquid stock possessing aromatics-rich hydrocarbons with high octane rating (RON 92) is suitable for gasoline blending applications. The C3–C4 and H2 gases formed as byproducts also attract LPG and green fuel applications. Overall study indicates that the co-processing of glycerol with methanol facilitated higher carbon atomic efficiency for the production of gasoline stocks. The reaction environment with a higher H/Ceff also contributed to the improved product quality and catalyst life that attracts sustainable features of the process.

Suggested Citation

  • Singh, Vijendra & Arumugam, Selvamani & Tathod, Anup Prakash & Kuldeep, & Vempatapu, Bhanu Prasad & Viswanadham, Nagabhatla, 2023. "Sustainable production of aromatics-rich gasoline stock from bio-glycerol over hierarchically porous Zn-decorated HZSM-5 catalyst," Renewable Energy, Elsevier, vol. 217(C).
    • Handle: RePEc:eee:renene:v:217:y:2023:i:c:s0960148123010959
    DOI: 10.1016/j.renene.2023.119180
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    References listed on IDEAS

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    1. Jiménez, Roberto X. & Young, André F. & Fernandes, Heloisa L.S., 2020. "Propylene glycol from glycerol: Process evaluation and break-even price determination," Renewable Energy, Elsevier, vol. 158(C), pages 181-191.
    2. Sittijunda, Sureewan & Reungsang, Alissara, 2020. "Valorization of crude glycerol into hydrogen, 1,3-propanediol, and ethanol in an up-flow anaerobic sludge blanket (UASB) reactor under thermophilic conditions," Renewable Energy, Elsevier, vol. 161(C), pages 361-372.
    3. Rodrigues, Caroline Varella & Rios Alcaraz, Francisco Abraham & Nespeca, Maurílio Gustavo & Rodrigues, Aline Varella & Motteran, Fabrício & Tallarico Adorno, Maria Angela & Varesche, Maria Bernadete A, 2020. "Biohydrogen production in an integrated biosystem using crude glycerol from waste cooking oils," Renewable Energy, Elsevier, vol. 162(C), pages 701-711.
    4. de Andrade, Taynara S. & Souza, Mariana M.V.M. & Manfro, Robinson L., 2020. "Hydrogenolysis of glycerol to 1,2-propanediol without external H2 addition in alkaline medium using Ni-Cu catalysts supported on Y zeolite," Renewable Energy, Elsevier, vol. 160(C), pages 919-930.
    5. Kuljiraseth, Jirayu & Kumpradit, Thanakorn & Leungcharoenwattana, Tuangrat & Poo-arporn, Yingyot & Jitkarnka, Sirirat, 2020. "Integrated glycerol- and ethanol-based chemical synthesis routes using Cu–Mg–Al LDH-derived catalysts without external hydrogen: Intervention of bio-ethanol co-fed with glycerol," Renewable Energy, Elsevier, vol. 156(C), pages 975-985.
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