Gas-phase hydrogenation of furfural into value-added chemicals: The critical role of metal-based catalysts

Vikrant, Kumar; Kim, Ki-Hyun

doi:10.1016/j.scitotenv.2023.166882

Cited by 7 publications

(2 citation statements)

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“…The Step 1 reaction is well established and can reach >90% yield. 16,17 The process continues with THFA dehydration to 3,4−2H-dihydropyran (DHP, Step 2), followed by DHP hydration to 2-hydroxytetrahydropyran (2-HTHP,…”

Section: ■ Pyran Processmentioning

confidence: 99%

“…Pyran’s process starts with hydrogenation of furfural to tetrahydrofurfuryl alcohol (THFA) (Step 1) over Pd-, Cu-, or Ni-based catalysts. The Step 1 reaction is well established and can reach >90% yield. , The process continues with THFA dehydration to 3,4–2H-dihydropyran (DHP, Step 2), followed by DHP hydration to 2- hydroxytetrahydropyran (2-HTHP, Step 3), and finally 2-HTHP hydrogenation to 1,5-pentanediol (1,5-PDO, Step 4). The patented Pyran technology , increases the overall 1,5-PDO yield from 70 to 86% compared to traditional routes .…”

Section: Pyran Processmentioning

confidence: 99%

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A Reactor Scale-Up Methodology from Lab-Scale to Pilot-Scale Operations: Numerical Modeling of THFA Dehydration to DHP in Packed-Bed Reactors

Karakaya,

Adkins,

McClelland

et al. 2024

Ind. Eng. Chem. Res.

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This manuscript discusses developing a model-based scale-up methodology for a successful technology transfer of gas-phase catalytic reactors from a lab-scale to a pilot-scale operation. The manuscript demonstrates the methodology for gas-phase dehydration of tetrahydrofurfuryl alcohol (THFA) to dihydropyran (DHP) process over commercial Al 2 O 3 catalysts. A two-dimensional reactor model was developed using COMSOL Multiphysics 6.1 software. The model solves heat and mass transport equations in bed-scale and particle scales simultaneously. This powerful feature enables accurate prediction of the heat and mass transfer limitations in pilot-scale reactors, if any exists. The model uses isothermal lab-scale experimental data to derive and validate the reaction chemistry, flow fields and boundary conditions. The model was then scaled-up to project conversion, selectivity, yield and formation rate of DHP in a pilot-scale reactor. The results highlight the complex nature of chemistry, heat, and mass transfer effects in lab-scale and pilot-scale reactors. The model results inform the possible operational limitations of the pilot-scale reactor and design strategies to improve process efficiency. Although the scale-up approach is explained through the THFA dehydration process, the methodology is applicable to any catalytic packed-bed reactor models for a successful process scale-up.

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Section: ■ Pyran Processmentioning

confidence: 99%