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. 2022 Aug 10;25(9):104903. doi: 10.1016/j.isci.2022.104903

Table 1.

Comparisons between the present study and previous review articles related to propylene glycol production from glycerol

Review title Main focus References
Conversion of glycerol to propanediol and acrolein by heterogeneous catalysis
  • Previous research studies and progress in the conversion of glycerol to propanediol and acrolein.

  • Reaction mechanism of glycerol to propanediol and acrolein.

Bozga et al.,(2011)
Recent advancements in catalytic conversion of glycerol into propylene glycol:
  • Research progress in process development, effects of catalyst preparation, and activation methods during the catalytic conversion of glycerol to propylene glycol.

  • Reviewed the economic feasibility of integrating bio-hydrogen production with hydrogenolysis reaction.

Nanda et al., (2016)
Glycerol transformation to value-added C3 diols: Reaction mechanism, kinetic, and engineering aspects.
  • Critically evaluate the reaction mechanism for the production of 1,2- and 1,3-propanediols.

  • Discuss the effect of temperature, hydrogen pressure, glycerol concentration, and the reaction kinetics on the production of 1,2- and 1,3-propanediols.

Vasiliadou and Lemonidou, (2015)
Catalytic transfer hydrogenolysis as an efficient route in cleavage of lignin and model compounds
  • The mechanism of catalytic transfer hydrogenolysis was presented as well as the catalysts required and hydrogen source.

  • Current challenges and opportunities for future research required for the improvement of catalytic transfer hydrogenolysis were discussed.

Zhang, (2018)
Insights on production mechanism and industrial applications of renewable propylene glycol
  • Review recent studies related to catalytic hydrogenolysis of glycerol to propylene glycol.

  • Briefly discuss the catalytic transfer hydrogenolysis process (use of bi-functional catalyst, pros and cons of the technology).

  • Outline different catalysts for glycerol hydrogenolysis, the reaction mechanism, and process challenges.

  • Outlines various industrial applications of renewable propylene glycol.

  • Review previous studies related to the economic and environmental impacts of propylene glycol production.

This study