NMR study of intrinsic diffusion and reaction in CsNaX type zeolites

H. B. Schwarz; H. Ernst; S. Ernst; J. Kärger; T. Röser; R. Q. Snurr; J. Weitkamp

doi:10.1016/0926-860X(95)00113-1

NMR study of intrinsic diffusion and reaction in CsNaX type zeolites

H. B. Schwarz, H. Ernst, S. Ernst, J. Kärger^*, T. Röser, R. Q. Snurr, J. Weitkamp

^*Corresponding author for this work

Chemical and Biological Engineering

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

16 Scopus citations

Abstract

In this contribution the catalytic behaviour of the zeolites CsNaX-60 and CsNaX-60·8CsOH (impregnated with eight CsOH per unit cell) was studied. As a model reaction, the conversion of isopropanol to acetone as the product of basic catalysis or to propene as the product of acid catalysis was chosen. The intracrystalline self-diffusivities of isopropanol, acetone and propene in these zeolites and in NaX were measured with the pulsed field gradient (PFG) NMR technique. Self-diffusivity measurements of propane and water were performed to characterize these three zeolites. ¹³C MAS NMR studies with proton decoupling were used to test the cesium containing zeolites for acid or basic catalytic activity.

Original language	English (US)
Pages (from-to)	227-241
Number of pages	15
Journal	Applied Catalysis A, General
Volume	130
Issue number	2
DOIs	https://doi.org/10.1016/0926-860X(95)00113-1
State	Published - Sep 28 1995

Keywords

Acetone
Basic catalysis
C MAS NMR
CsNaX-60
CsNaX-60·8CsOH
H PFG NMR
Intrinsic diffusion
Isopropanol
NaX
Propene
Zeolites

ASJC Scopus subject areas

Catalysis
Process Chemistry and Technology

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10.1016/0926-860X(95)00113-1

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title = "NMR study of intrinsic diffusion and reaction in CsNaX type zeolites",

abstract = "In this contribution the catalytic behaviour of the zeolites CsNaX-60 and CsNaX-60·8CsOH (impregnated with eight CsOH per unit cell) was studied. As a model reaction, the conversion of isopropanol to acetone as the product of basic catalysis or to propene as the product of acid catalysis was chosen. The intracrystalline self-diffusivities of isopropanol, acetone and propene in these zeolites and in NaX were measured with the pulsed field gradient (PFG) NMR technique. Self-diffusivity measurements of propane and water were performed to characterize these three zeolites. 13C MAS NMR studies with proton decoupling were used to test the cesium containing zeolites for acid or basic catalytic activity.",

keywords = "Acetone, Basic catalysis, C MAS NMR, CsNaX-60, CsNaX-60·8CsOH, H PFG NMR, Intrinsic diffusion, Isopropanol, NaX, Propene, Zeolites",

author = "Schwarz, {H. B.} and H. Ernst and S. Ernst and J. K{\"a}rger and T. R{\"o}ser and Snurr, {R. Q.} and J. Weitkamp",

year = "1995",

month = sep,

day = "28",

doi = "10.1016/0926-860X(95)00113-1",

language = "English (US)",

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TY - JOUR

T1 - NMR study of intrinsic diffusion and reaction in CsNaX type zeolites

AU - Schwarz, H. B.

AU - Ernst, H.

AU - Ernst, S.

AU - Kärger, J.

AU - Röser, T.

AU - Snurr, R. Q.

AU - Weitkamp, J.

PY - 1995/9/28

Y1 - 1995/9/28

N2 - In this contribution the catalytic behaviour of the zeolites CsNaX-60 and CsNaX-60·8CsOH (impregnated with eight CsOH per unit cell) was studied. As a model reaction, the conversion of isopropanol to acetone as the product of basic catalysis or to propene as the product of acid catalysis was chosen. The intracrystalline self-diffusivities of isopropanol, acetone and propene in these zeolites and in NaX were measured with the pulsed field gradient (PFG) NMR technique. Self-diffusivity measurements of propane and water were performed to characterize these three zeolites. 13C MAS NMR studies with proton decoupling were used to test the cesium containing zeolites for acid or basic catalytic activity.

AB - In this contribution the catalytic behaviour of the zeolites CsNaX-60 and CsNaX-60·8CsOH (impregnated with eight CsOH per unit cell) was studied. As a model reaction, the conversion of isopropanol to acetone as the product of basic catalysis or to propene as the product of acid catalysis was chosen. The intracrystalline self-diffusivities of isopropanol, acetone and propene in these zeolites and in NaX were measured with the pulsed field gradient (PFG) NMR technique. Self-diffusivity measurements of propane and water were performed to characterize these three zeolites. 13C MAS NMR studies with proton decoupling were used to test the cesium containing zeolites for acid or basic catalytic activity.

KW - Acetone

KW - Basic catalysis

KW - C MAS NMR

KW - CsNaX-60

KW - CsNaX-60·8CsOH

KW - H PFG NMR

KW - Intrinsic diffusion

KW - Isopropanol

KW - NaX

KW - Propene

KW - Zeolites

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U2 - 10.1016/0926-860X(95)00113-1

DO - 10.1016/0926-860X(95)00113-1

M3 - Article

AN - SCOPUS:26044452770

SN - 0926-860X

VL - 130

SP - 227

EP - 241

JO - Applied Catalysis A, General

JF - Applied Catalysis A, General

IS - 2

ER -

NMR study of intrinsic diffusion and reaction in CsNaX type zeolites

Abstract

Keywords

ASJC Scopus subject areas

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