Acid-base properties of silica-alumina oxides derived from NaX zeolites. Part III. Catalytic activity in dehydration of alcohols and in isomerization of but-1-ene

H. Vinek; J. A. Lercher; H. Noller

doi:10.1016/0304-5102(85)85045-8

Acid-base properties of silica-alumina oxides derived from NaX zeolites. Part III. Catalytic activity in dehydration of alcohols and in isomerization of but-1-ene

H. Vinek
, J. A. Lercher
, H. Noller

Technical University of Vienna

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

13 Scopus citations

Abstract

NaHX zeolites and amorphous SiO₂/Al₂O₃ oxides (prepared from these zeolites) are compared for their catalytic activity in the dehydration of butan-1-ol and butan-2-ol, conversion of methanol and in the isomerization of but-1-ene. The activity for dehydration (formation of butene and dimethyl ether) was highest for ASX3 (amorphous, 67.1% SiO₂), and was significantly lower for ASX1 (NaHX zeolite) and for ASX5 (amorphous, 92.3% SiO₂). This suggests a maximum of the total number of acid sites per surface area with ASX3. The double bond isomerization proceeded much faster over ASX3, ASX4 and ASX5 (amorphous, 67.1-92.3% SiO₂) than over ASX1 and ASX2 (NaHX zeolites) indicating significantly higher acid strength of the former samples. The similar activities of ASX3 - ASX5 for the isomerization of but-1-ene suggest similar densities and strengths of the strong acid sites.

Original language	English
Pages (from-to)	353-359
Number of pages	7
Journal	Journal of Molecular Catalysis
Volume	30
Issue number	3
DOIs	https://doi.org/10.1016/0304-5102(85)85045-8
State	Published - Jun 1985
Externally published	Yes

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title = "Acid-base properties of silica-alumina oxides derived from NaX zeolites. Part III. Catalytic activity in dehydration of alcohols and in isomerization of but-1-ene",

abstract = "NaHX zeolites and amorphous SiO2/Al2O3 oxides (prepared from these zeolites) are compared for their catalytic activity in the dehydration of butan-1-ol and butan-2-ol, conversion of methanol and in the isomerization of but-1-ene. The activity for dehydration (formation of butene and dimethyl ether) was highest for ASX3 (amorphous, 67.1\% SiO2), and was significantly lower for ASX1 (NaHX zeolite) and for ASX5 (amorphous, 92.3\% SiO2). This suggests a maximum of the total number of acid sites per surface area with ASX3. The double bond isomerization proceeded much faster over ASX3, ASX4 and ASX5 (amorphous, 67.1-92.3\% SiO2) than over ASX1 and ASX2 (NaHX zeolites) indicating significantly higher acid strength of the former samples. The similar activities of ASX3 - ASX5 for the isomerization of but-1-ene suggest similar densities and strengths of the strong acid sites.",

author = "H. Vinek and Lercher, \{J. A.\} and H. Noller",

year = "1985",

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doi = "10.1016/0304-5102(85)85045-8",

language = "English",

volume = "30",

pages = "353--359",

journal = "Journal of Molecular Catalysis",

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T1 - Acid-base properties of silica-alumina oxides derived from NaX zeolites. Part III. Catalytic activity in dehydration of alcohols and in isomerization of but-1-ene

AU - Vinek, H.

AU - Lercher, J. A.

AU - Noller, H.

PY - 1985/6

Y1 - 1985/6

N2 - NaHX zeolites and amorphous SiO2/Al2O3 oxides (prepared from these zeolites) are compared for their catalytic activity in the dehydration of butan-1-ol and butan-2-ol, conversion of methanol and in the isomerization of but-1-ene. The activity for dehydration (formation of butene and dimethyl ether) was highest for ASX3 (amorphous, 67.1% SiO2), and was significantly lower for ASX1 (NaHX zeolite) and for ASX5 (amorphous, 92.3% SiO2). This suggests a maximum of the total number of acid sites per surface area with ASX3. The double bond isomerization proceeded much faster over ASX3, ASX4 and ASX5 (amorphous, 67.1-92.3% SiO2) than over ASX1 and ASX2 (NaHX zeolites) indicating significantly higher acid strength of the former samples. The similar activities of ASX3 - ASX5 for the isomerization of but-1-ene suggest similar densities and strengths of the strong acid sites.

AB - NaHX zeolites and amorphous SiO2/Al2O3 oxides (prepared from these zeolites) are compared for their catalytic activity in the dehydration of butan-1-ol and butan-2-ol, conversion of methanol and in the isomerization of but-1-ene. The activity for dehydration (formation of butene and dimethyl ether) was highest for ASX3 (amorphous, 67.1% SiO2), and was significantly lower for ASX1 (NaHX zeolite) and for ASX5 (amorphous, 92.3% SiO2). This suggests a maximum of the total number of acid sites per surface area with ASX3. The double bond isomerization proceeded much faster over ASX3, ASX4 and ASX5 (amorphous, 67.1-92.3% SiO2) than over ASX1 and ASX2 (NaHX zeolites) indicating significantly higher acid strength of the former samples. The similar activities of ASX3 - ASX5 for the isomerization of but-1-ene suggest similar densities and strengths of the strong acid sites.

UR - https://www.scopus.com/pages/publications/0022076885

U2 - 10.1016/0304-5102(85)85045-8

DO - 10.1016/0304-5102(85)85045-8

M3 - Article

AN - SCOPUS:0022076885

SN - 0304-5102

VL - 30

SP - 353

EP - 359

JO - Journal of Molecular Catalysis

JF - Journal of Molecular Catalysis

IS - 3

ER -

Acid-base properties of silica-alumina oxides derived from NaX zeolites. Part III. Catalytic activity in dehydration of alcohols and in isomerization of but-1-ene

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