NDLI: Evolution of the bulk structure and surface species on Fe–Ce catalysts during the Fischer

Content Provider	Royal Society of Chemistry (RSC)
Author	Granados, M. López Gracia, M. Herranz, T. Terreros, P. Fierro, J. L. G. Gancedo, J. R. Pérez-Alonso, F. J. Ojeda, M. Rojas, S.
Copyright Year	2007
Abstract	Two Fe–Ce catalysts were prepared by wet impregnation of Ce onto iron oxyhydroxide (FeOOH) and hematite iron oxide (α-Fe2O3), respectively. Their performance in the Fischer–Tropsch (FT) synthesis was investigated and compared with that obtained with a Ce-free α-Fe2O3 catalyst. It was observed that the behavior of the different catalysts changed along the course of the FT reaction. The catalysts were tested for different periods of time, carefully passivated, recovered from the reactor and characterized by different techniques. The FT activity of the Ce-loaded and Ce-free catalysts decreased initially, but at a certain point the catalytic activity started to increase. The time needed to reach this inflection point depended on the catalyst composition, being shorter for the Ce-promoted catalysts. The catalytic activity of the Ce-free catalyst increased when the Fe3C species were transformed into χ-Fe2.5C, which are suggested to be the carbide phase present when polymerized carbon species (Cβ) are formed. The addition of Ce to the iron oxyhydroxide developed solids with a higher BET surface area. Besides, these samples displayed a higher FT activity at long time-on-stream (TOS). Moreover, Ce addition also facilitated the formation of the Cβ species previous to the evolution of Fe3C into χ-Fe2.5C, and therefore, promoted the FT synthesis reaction.
Starting Page	663
Ending Page	670
Page Count	8
File Format	HTM / HTML PDF
ISSN	14639262
Volume Number	9
Issue Number	6
Journal	Green Chemistry
DOI	10.1039/b614139k
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Subscribed
Subject Keyword	BET Fischer Iron(III) oxide-hydroxide Hematite Iron oxide Fischer\u2013Tropsch process Inflection point Carbon
Content Type	Text
Resource Type	Article
Subject	Environmental Chemistry Pollution

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Carbon/H-ZSM-5 composites as supports for bi-functional Fischer–Tropsch synthesis catalysts

Identification of carbon species on iron-based catalysts during Fischer-Tropsch synthesis

The role of carbon atoms of supported iron carbides in Fischer–Tropsch synthesis

Alumina-promoted cobalt and iron xerogels as catalyst for the Fischer–Tropsch synthesis

Effect of pore size on the performance of mesoporous zirconia-supported cobalt Fischer–Tropsch catalysts

Support effects on the structure and performance of ruthenium catalysts for the Fischer–Tropsch synthesis

The effect of the nanofibrous Al₂O₃ aspect ratio on Fischer–Tropsch synthesis over cobalt catalysts

Fischer-Tropsch synthesis catalysts based on Fe oxide precursors modified by Cu and K : structure and site requirements

Nitrogen-doped carbon species: a promising nonmetallic promoter for the Co/SiO₂ Fischer–Tropsch synthesis catalyst

Evolution of the bulk structure and surface species on Fe–Ce catalysts during the Fischer–Tropsch synthesis

Similar Documents

Carbon/H-ZSM-5 composites as supports for bi-functional Fischer–Tropsch synthesis catalysts

Identification of carbon species on iron-based catalysts during Fischer-Tropsch synthesis

The role of carbon atoms of supported iron carbides in Fischer–Tropsch synthesis

Alumina-promoted cobalt and iron xerogels as catalyst for the Fischer–Tropsch synthesis

Effect of pore size on the performance of mesoporous zirconia-supported cobalt Fischer–Tropsch catalysts

Support effects on the structure and performance of ruthenium catalysts for the Fischer–Tropsch synthesis

The effect of the nanofibrous Al2O3 aspect ratio on Fischer–Tropsch synthesis over cobalt catalysts

Fischer-Tropsch synthesis catalysts based on Fe oxide precursors modified by Cu and K : structure and site requirements

Nitrogen-doped carbon species: a promising nonmetallic promoter for the Co/SiO2 Fischer–Tropsch synthesis catalyst

Evolution of the bulk structure and surface species on Fe–Ce catalysts during the Fischer–Tropsch synthesis

The effect of the nanofibrous Al₂O₃ aspect ratio on Fischer–Tropsch synthesis over cobalt catalysts

Nitrogen-doped carbon species: a promising nonmetallic promoter for the Co/SiO₂ Fischer–Tropsch synthesis catalyst