Silica-supported small crystals of ZSM-5 zeolite

M. V. Landau; N. Zaharur; M. Herskowitz

doi:10.1016/0926-860X(94)80374-9

Silica-supported small crystals of ZSM-5 zeolite

M. V. Landau, N. Zaharur, M. Herskowitz

Department of Chemical Engineering

Research output: Contribution to journal › Article › peer-review

22 Scopus citations

Abstract

The small crystals of the ZSM-5 zeolite were synthesized and stabilized inside pores of granulated silica gel support. The pores were filled with aqueous NaOH-Na₂Al₂O₄-TPABr. During zeolite synthesis the reactants reacted with the silica on the pores wall to form small crystals. 37 wt.-% of ZSM-5 crystals were produced. TEM measurements showed large crystals, 3-5 μm in diameter, on the outer surface of silica grains; medium crystals, 0.5-2 μm, inside the macropores and small crystals, 0.02-0.035 μm, inside the mesopores. The catalytic activity of the supported zeolite H-ZSM-5/SiO₂ measured by cracking of isobutane at 410-550°C was 2.2-7.8 times higher than for standard zeolite H-ZSM-5 with the same SiO₂/Al₂O₃ ratio and sodium content depending on the testing temperature.

Original language	English
Pages (from-to)	L7-L14
Journal	Applied Catalysis A: General
Volume	115
Issue number	1
DOIs	https://doi.org/10.1016/0926-860X(94)80374-9
State	Published - 4 Aug 1994

Keywords

Crystallization
Isobutane cracking
Silica
Support
ZSM-5

ASJC Scopus subject areas

Catalysis
Process Chemistry and Technology

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10.1016/0926-860X(94)80374-9

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title = "Silica-supported small crystals of ZSM-5 zeolite",

abstract = "The small crystals of the ZSM-5 zeolite were synthesized and stabilized inside pores of granulated silica gel support. The pores were filled with aqueous NaOH-Na2Al2O4-TPABr. During zeolite synthesis the reactants reacted with the silica on the pores wall to form small crystals. 37 wt.-\% of ZSM-5 crystals were produced. TEM measurements showed large crystals, 3-5 μm in diameter, on the outer surface of silica grains; medium crystals, 0.5-2 μm, inside the macropores and small crystals, 0.02-0.035 μm, inside the mesopores. The catalytic activity of the supported zeolite H-ZSM-5/SiO2 measured by cracking of isobutane at 410-550°C was 2.2-7.8 times higher than for standard zeolite H-ZSM-5 with the same SiO2/Al2O3 ratio and sodium content depending on the testing temperature.",

keywords = "Crystallization, Isobutane cracking, Silica, Support, ZSM-5",

author = "Landau, \{M. V.\} and N. Zaharur and M. Herskowitz",

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doi = "10.1016/0926-860X(94)80374-9",

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T1 - Silica-supported small crystals of ZSM-5 zeolite

AU - Landau, M. V.

AU - Zaharur, N.

AU - Herskowitz, M.

PY - 1994/8/4

Y1 - 1994/8/4

N2 - The small crystals of the ZSM-5 zeolite were synthesized and stabilized inside pores of granulated silica gel support. The pores were filled with aqueous NaOH-Na2Al2O4-TPABr. During zeolite synthesis the reactants reacted with the silica on the pores wall to form small crystals. 37 wt.-% of ZSM-5 crystals were produced. TEM measurements showed large crystals, 3-5 μm in diameter, on the outer surface of silica grains; medium crystals, 0.5-2 μm, inside the macropores and small crystals, 0.02-0.035 μm, inside the mesopores. The catalytic activity of the supported zeolite H-ZSM-5/SiO2 measured by cracking of isobutane at 410-550°C was 2.2-7.8 times higher than for standard zeolite H-ZSM-5 with the same SiO2/Al2O3 ratio and sodium content depending on the testing temperature.

AB - The small crystals of the ZSM-5 zeolite were synthesized and stabilized inside pores of granulated silica gel support. The pores were filled with aqueous NaOH-Na2Al2O4-TPABr. During zeolite synthesis the reactants reacted with the silica on the pores wall to form small crystals. 37 wt.-% of ZSM-5 crystals were produced. TEM measurements showed large crystals, 3-5 μm in diameter, on the outer surface of silica grains; medium crystals, 0.5-2 μm, inside the macropores and small crystals, 0.02-0.035 μm, inside the mesopores. The catalytic activity of the supported zeolite H-ZSM-5/SiO2 measured by cracking of isobutane at 410-550°C was 2.2-7.8 times higher than for standard zeolite H-ZSM-5 with the same SiO2/Al2O3 ratio and sodium content depending on the testing temperature.

KW - Crystallization

KW - Isobutane cracking

KW - Silica

KW - Support

KW - ZSM-5

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U2 - 10.1016/0926-860X(94)80374-9

DO - 10.1016/0926-860X(94)80374-9

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SN - 0926-860X

VL - 115

SP - L7-L14

JO - Applied Catalysis A: General

JF - Applied Catalysis A: General

IS - 1

ER -

Silica-supported small crystals of ZSM-5 zeolite

Abstract

Keywords

ASJC Scopus subject areas

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