Modeling diffusional limitations in Fischer Tropsch synthesis catalyst at near critical and supercritical solvent conditions

Aswani K. Mogalicherla, Elfatih E. Elmalik, Nimir O. Elbashir

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Conducting Fischer-Tropsch synthesis (FTS) reaction in near critical and supercritical fluid (SCF) media has been demonstrated to have certain advantages over the traditional routes because of the unique characteristics of the supercritical phase. It combines the desirable properties of gas-like diffusion along with liquid-like heat transfer and solubility to overcome many of the limitations of the current industrial FTS reactors.1 In the process of tuning transport properties, there is a possibility that the reaction moves from a kinetic control regime to diffusion control regime. Therefore, analyzing only the variations in transport properties (diffusivity, density and viscosity) with operating conditions is not a sufficient task for optimal reactor design. The relative change in the diffusion rate with respect to the rate of reaction has to be determined for identifying the controlling regime.2 Very few studies have been reported on diffusional limitations in FTS catalysts at supercritical conditions.3 Those studies were not accounting the details of reaction kinetics, product distribution and density dependency of diffusivities. In most of the cases first order reaction kinetics were assumed, which is not a valid assumption. Even though a large number of kinetic models for FTS have been developed, these models were not used in estimating diffusional effects in FTS catalysts.

Original languageEnglish
Title of host publication11th Topical Conference on Gas Utilization 2011 - Topical Conference at the 2011 AIChE Spring Meeting and 7th Global Congress on Process Safety
PublisherAIChE
Pages210-211
Number of pages2
ISBN (Print)9781617828942
Publication statusPublished - 2011
Event11th Topical Conference on Gas Utilization 2011 - Topical Conference at the 2011 AIChE Spring Meeting and 7th Global Congress on Process Safety - Chicago, IL, United States
Duration: 13 Mar 201117 Mar 2011

Other

Other11th Topical Conference on Gas Utilization 2011 - Topical Conference at the 2011 AIChE Spring Meeting and 7th Global Congress on Process Safety
CountryUnited States
CityChicago, IL
Period13/3/1117/3/11

Fingerprint

Fischer-Tropsch synthesis
catalyst
reaction kinetics
diffusivity
Catalysts
modeling
kinetics
Reaction kinetics
Transport properties
heat transfer
solubility
viscosity
Kinetics
Supercritical fluids
liquid
fluid
gas
Solubility
Tuning
Gases

ASJC Scopus subject areas

  • Geochemistry and Petrology

Cite this

Mogalicherla, A. K., Elmalik, E. E., & Elbashir, N. O. (2011). Modeling diffusional limitations in Fischer Tropsch synthesis catalyst at near critical and supercritical solvent conditions. In 11th Topical Conference on Gas Utilization 2011 - Topical Conference at the 2011 AIChE Spring Meeting and 7th Global Congress on Process Safety (pp. 210-211). AIChE.

Modeling diffusional limitations in Fischer Tropsch synthesis catalyst at near critical and supercritical solvent conditions. / Mogalicherla, Aswani K.; Elmalik, Elfatih E.; Elbashir, Nimir O.

11th Topical Conference on Gas Utilization 2011 - Topical Conference at the 2011 AIChE Spring Meeting and 7th Global Congress on Process Safety. AIChE, 2011. p. 210-211.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Mogalicherla, AK, Elmalik, EE & Elbashir, NO 2011, Modeling diffusional limitations in Fischer Tropsch synthesis catalyst at near critical and supercritical solvent conditions. in 11th Topical Conference on Gas Utilization 2011 - Topical Conference at the 2011 AIChE Spring Meeting and 7th Global Congress on Process Safety. AIChE, pp. 210-211, 11th Topical Conference on Gas Utilization 2011 - Topical Conference at the 2011 AIChE Spring Meeting and 7th Global Congress on Process Safety, Chicago, IL, United States, 13/3/11.
Mogalicherla AK, Elmalik EE, Elbashir NO. Modeling diffusional limitations in Fischer Tropsch synthesis catalyst at near critical and supercritical solvent conditions. In 11th Topical Conference on Gas Utilization 2011 - Topical Conference at the 2011 AIChE Spring Meeting and 7th Global Congress on Process Safety. AIChE. 2011. p. 210-211
Mogalicherla, Aswani K. ; Elmalik, Elfatih E. ; Elbashir, Nimir O. / Modeling diffusional limitations in Fischer Tropsch synthesis catalyst at near critical and supercritical solvent conditions. 11th Topical Conference on Gas Utilization 2011 - Topical Conference at the 2011 AIChE Spring Meeting and 7th Global Congress on Process Safety. AIChE, 2011. pp. 210-211
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