Fischer-Tropsch Synthesis: Influence of CO conversion on selectivities, H2/CO usage ratios, and catalyst stability for a Ru promoted Co/Al2O3 catalyst using a slurry phase reactor

Wenping Ma, Gary Jacobs, Yaying Ji, Tejas Bhatelia, Dragomir Bukur, Syed Khalid, Burtron H. Davis

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

Abstract

The Co particle size effect is a topic of interest in Co-based Fischer-Tropsch synthesis catalysis. The effect of CO conversion on various parameters, i.e., CH4 and C5+ selectivities, CO2 selectivity, H2/CO usage, and olefin/paraffin, was studied. CH4 selectivity decreased and C5+ selectivity increased with increasing CO conversion. When CO conversion was over 70%, the decrease in CH4 selectivity and increase in C5+ selectivity decelerated. CO2 selectivity started to increase rapidly at ≈ 70% CO conversion for the Ru-Co/Al2O3 catalyst. Controlling CO conversion below 70% for long-term testing of Co/Al2O3 catalyst possibly minimized CH4 and CO2 selectivities and extended catalyst life. The H2/CO usage ratio decreased from 2.26:1 to 1.9:1 when CO conversion increased from 12% to 94% at a H2/CO feed ratio of 2.1:1. The decreasing H2/CO usage rate with CO conversion was ascribed to an increase in the WGS rate. This is an abstract of a paper presented at the 2011 AIChE Spring Meeting & 7th Global Congress on Process Safety (Chicago, IL 3/13-17/2011).

Original languageEnglish
Title of host publication11AIChE - 2011 AIChE Spring Meeting and 7th Global Congress on Process Safety, Conference Proceedings
PublisherAmerican Institute of Chemical Engineers
ISBN (Print)9780816910670
Publication statusPublished - 2011
Event2011 AIChE Spring Meeting and 7th Global Congress on Process Safety, 11AIChE - Chicago, IL, United States
Duration: 13 Mar 201117 Mar 2011

Other

Other2011 AIChE Spring Meeting and 7th Global Congress on Process Safety, 11AIChE
CountryUnited States
CityChicago, IL
Period13/3/1117/3/11

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ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Chemistry(all)
  • Safety, Risk, Reliability and Quality

Cite this

Ma, W., Jacobs, G., Ji, Y., Bhatelia, T., Bukur, D., Khalid, S., & Davis, B. H. (2011). Fischer-Tropsch Synthesis: Influence of CO conversion on selectivities, H2/CO usage ratios, and catalyst stability for a Ru promoted Co/Al2O3 catalyst using a slurry phase reactor. In 11AIChE - 2011 AIChE Spring Meeting and 7th Global Congress on Process Safety, Conference Proceedings American Institute of Chemical Engineers.