fulltext.study @t Gmail

Coking resistance evaluation of tar removal catalysts

Paper ID Volume ID Publish Year Pages File Format Full-Text
49303 46733 2015 5 PDF Available
Title
Coking resistance evaluation of tar removal catalysts
Abstract

•Ni catalysts supported on hexaaluminates of La, La/Ce and Ba were evaluated.•Cyclohexane dehydrogenation indicates the tendency of coke formation.•Coking rates were calculated using thermogravimetric experiments with synthetic mixtures.•The catalysts were tested in steam reforming of toluene at 500 and 650 °C.

The tendency towards coke formation on nickel catalysts supported on hexaaluminates of barium, lanthanum and lanthanum/cerium was evaluated by two different methods: model reaction of cyclohexane dehydrogenation and thermogravimetric analysis using a synthetic gas composition. The ratio between hydrogenolysis and dehydrogenation rates provided a good indication of the potential for coke formation on the catalyst and is correlated to the nickel particle size. Thermogravimetric analysis was performed using a synthetic mixture containing H2, CO, CO2 and CH4, and also in the presence of C2H4. The catalyst supported on barium hexaaluminate presented lower coking rate and higher activity in toluene steam reforming, with preferential formation of filamentous carbon.

Keywords
Coking resistance; Nickel; Hexaaluminate; Tar; Steam reforming
First Page Preview
Coking resistance evaluation of tar removal catalysts
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us
Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 71, 5 November 2015, Pages 79–83
Authors
, , ,
Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us