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Coupling conversion of methanol and 1-butylene to propylene on HZSM-5 molecular sieve catalysts prepared by different methods
- Source :
- Korean Journal of Chemical Engineering. 33:2097-2106
- Publication Year :
- 2016
- Publisher :
- Springer Science and Business Media LLC, 2016.
-
Abstract
- A series of HZSM-5 catalysts were synthesized by different methods. The physicochemical properties of the HZSM-5 catalysts were characterized by XRD, SEM, N2 isothermal adsorption-desorption, NH3-TPD, Py-IR and TGA, respectively. The results indicated that different preparation conditions lead to different morphologies, textures and the distribution of acid sites. The nanosized HZSM-5 catalysts exhibited better catalytic reactivity and coke capacity than the micro-sized HZSM-5 because nanosized HZSM-5 had larger specific surface area, higher pore volume, more exposed channels and more accessible acid sites. The large particles of NZ-3 in a reasonable range and the smooth surface were conducive to product diffusion; therefore, NZ-3 exhibited higher specific propylene yield and stability than the other nanosized catalysts. The moderate density and distribution of acid sites on NZ-3 also favored the formation of propylene.
- Subjects :
- Materials science
General Chemical Engineering
Diffusion
Inorganic chemistry
02 engineering and technology
General Chemistry
Coke
010402 general chemistry
021001 nanoscience & nanotechnology
Molecular sieve
01 natural sciences
0104 chemical sciences
Catalysis
chemistry.chemical_compound
chemistry
Yield (chemistry)
Specific surface area
Reactivity (chemistry)
Methanol
0210 nano-technology
Subjects
Details
- ISSN :
- 19757220 and 02561115
- Volume :
- 33
- Database :
- OpenAIRE
- Journal :
- Korean Journal of Chemical Engineering
- Accession number :
- edsair.doi...........6c8592ef6aaeb530ce912ffc6969ed2e