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Structured ZSM-5 coated SiC foam catalysts for process intensification in catalytic cracking of n-hexane
- Source :
- Jiao, Y, Ou, X, Zhang, J & Fan, X 2019, ' Structured ZSM-5 Coated SiC Foam Catalysts for Process Intensification in Catalytic Cracking of n-Hexane ', Reaction Chemistry & Engineering, vol. 4, pp. 427-435 . https://doi.org/10.1039/C8RE00215K
- Publication Year :
- 2019
- Publisher :
- Royal Society of Chemistry (RSC), 2019.
-
Abstract
- Structured foam catalysts are technologies which address challenges in catalytic processes due to the mass and heat transfer limitations. In this work, ZSM-5 coated silicon carbide (SiC) foams were prepared by a dispersion-based method, resulting in a thin and uniform zeolite layer on the foam support (i.e. ZSM-5/SiC foam catalysts). A comparative study of catalytic cracking of n-hexane was studied over ZSM-5/SiC foam and ZSM-5 pellets catalysts at space velocities of 4–40 h−1, showing the improved n-hexane conversion, total selectivity to C2–C4 olefins and anti-deactivation performance, especially at the relatively high space velocities (>10 h−1), achieved by the ZSM-5/SiC foam catalysts. The light olefin yield obtained by the ZSM-5/SiC foam catalyst (with 45 ppi cell density) was almost five times higher than that by the conventional ZSM-5 pellets. A detailed analysis reveals that the specific surface area of SiC foams has the significant effect on the coating quality, and hence the catalytic performance in the cracking reaction.
- Subjects :
- Fluid Flow and Transfer Processes
Yield (engineering)
Materials science
Process Chemistry and Technology
02 engineering and technology
engineering.material
010402 general chemistry
021001 nanoscience & nanotechnology
Fluid catalytic cracking
01 natural sciences
Catalysis
0104 chemical sciences
chemistry.chemical_compound
Coating
chemistry
Chemical engineering
Chemistry (miscellaneous)
Specific surface area
engineering
Silicon carbide
Chemical Engineering (miscellaneous)
ZSM-5
0210 nano-technology
Zeolite
Subjects
Details
- ISSN :
- 20589883
- Volume :
- 4
- Database :
- OpenAIRE
- Journal :
- Reaction Chemistry & Engineering
- Accession number :
- edsair.doi.dedup.....a2f7290a61031cbb24b14bce9ae10567