Alkane/alkene mixture diffusion in silicalite-1 studied by MAS PFG NMR

Nina Dvoyashkina; Dieter Freude; Alexander G. Stepanov; Winfried Böhlmann; Rajamani Krishna; Jörg Kärger; Jürgen Haase

doi:10.1016/j.micromeso.2017.08.015

Alkane/alkene mixture diffusion in silicalite-1 studied by MAS PFG NMR

Nina Dvoyashkina, Dieter Freude, Alexander G. Stepanov, Winfried Böhlmann, Rajamani Krishna, Jörg Kärger, Jürgen Haase

Кафедра физической химии ФЕН

Результат исследования: Научные публикации в периодических изданиях › статья

13 Цитирования (Scopus)

Аннотация

The diffusivity of n-alkanes and n-alkenes (C2 to C6) and their mixtures in silicalite-1 was studied by magic-angle spinning pulsed field-gradient nuclear magnetic resonance (MAS PFG NMR) at the temperatures of 273 K, 313 K and 373 K. It could be proved that there is no significant difference between the diffusivities of alkanes, alkenes and their mixtures for equal carbon numbers and equal total loading. The diffusivities of the alkanes, alkenes and their mixtures are found to monotonically decrease with increasing carbon number, in agreement with the results obtained in MD simulations with n-alkanes in silicalite-1.

Язык оригинала	английский
Страницы (с-по)	128-134
Число страниц	7
Журнал	Microporous and Mesoporous Materials
Том	257
DOI	https://doi.org/10.1016/j.micromeso.2017.08.015
Состояние	Опубликовано - 1 фев 2018

Доступ к документу

10.1016/j.micromeso.2017.08.015

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title = "Alkane/alkene mixture diffusion in silicalite-1 studied by MAS PFG NMR",

abstract = "The diffusivity of n-alkanes and n-alkenes (C2 to C6) and their mixtures in silicalite-1 was studied by magic-angle spinning pulsed field-gradient nuclear magnetic resonance (MAS PFG NMR) at the temperatures of 273 K, 313 K and 373 K. It could be proved that there is no significant difference between the diffusivities of alkanes, alkenes and their mixtures for equal carbon numbers and equal total loading. The diffusivities of the alkanes, alkenes and their mixtures are found to monotonically decrease with increasing carbon number, in agreement with the results obtained in MD simulations with n-alkanes in silicalite-1.",

keywords = "MFI-TYPE ZEOLITES, ELASTIC NEUTRON-SCATTERING, SELF-DIFFUSION, N-ALKANES, CRYSTALLINE MATERIALS, LOADING DEPENDENCE, DIFFUSIVITIES, SIMULATIONS, DYNAMICS, TRANSPORT",

author = "Nina Dvoyashkina and Dieter Freude and Stepanov, {Alexander G.} and Winfried B{\"o}hlmann and Rajamani Krishna and J{\"o}rg K{\"a}rger and J{\"u}rgen Haase",

year = "2018",

month = feb,

day = "1",

doi = "10.1016/j.micromeso.2017.08.015",

language = "English",

volume = "257",

pages = "128--134",

journal = "Microporous and Mesoporous Materials",

issn = "1387-1811",

publisher = "Elsevier",

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Alkane/alkene mixture diffusion in silicalite-1 studied by MAS PFG NMR. / Dvoyashkina, Nina; Freude, Dieter; Stepanov, Alexander G.; Böhlmann, Winfried; Krishna, Rajamani; Kärger, Jörg; Haase, Jürgen.

В: Microporous and Mesoporous Materials, Том 257, 01.02.2018, стр. 128-134.

Результат исследования: Научные публикации в периодических изданиях › статья

TY - JOUR

T1 - Alkane/alkene mixture diffusion in silicalite-1 studied by MAS PFG NMR

AU - Dvoyashkina, Nina

AU - Freude, Dieter

AU - Stepanov, Alexander G.

AU - Böhlmann, Winfried

AU - Krishna, Rajamani

AU - Kärger, Jörg

AU - Haase, Jürgen

PY - 2018/2/1

Y1 - 2018/2/1

N2 - The diffusivity of n-alkanes and n-alkenes (C2 to C6) and their mixtures in silicalite-1 was studied by magic-angle spinning pulsed field-gradient nuclear magnetic resonance (MAS PFG NMR) at the temperatures of 273 K, 313 K and 373 K. It could be proved that there is no significant difference between the diffusivities of alkanes, alkenes and their mixtures for equal carbon numbers and equal total loading. The diffusivities of the alkanes, alkenes and their mixtures are found to monotonically decrease with increasing carbon number, in agreement with the results obtained in MD simulations with n-alkanes in silicalite-1.

AB - The diffusivity of n-alkanes and n-alkenes (C2 to C6) and their mixtures in silicalite-1 was studied by magic-angle spinning pulsed field-gradient nuclear magnetic resonance (MAS PFG NMR) at the temperatures of 273 K, 313 K and 373 K. It could be proved that there is no significant difference between the diffusivities of alkanes, alkenes and their mixtures for equal carbon numbers and equal total loading. The diffusivities of the alkanes, alkenes and their mixtures are found to monotonically decrease with increasing carbon number, in agreement with the results obtained in MD simulations with n-alkanes in silicalite-1.

KW - MFI-TYPE ZEOLITES

KW - ELASTIC NEUTRON-SCATTERING

KW - SELF-DIFFUSION

KW - N-ALKANES

KW - CRYSTALLINE MATERIALS

KW - LOADING DEPENDENCE

KW - DIFFUSIVITIES

KW - SIMULATIONS

KW - DYNAMICS

KW - TRANSPORT

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U2 - 10.1016/j.micromeso.2017.08.015

DO - 10.1016/j.micromeso.2017.08.015

M3 - Article

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VL - 257

SP - 128

EP - 134

JO - Microporous and Mesoporous Materials

JF - Microporous and Mesoporous Materials

SN - 1387-1811

ER -