Reactions of dimethylether in single crystals of the silicoaluminophosphate STA-7 studied via Operando synchrotron infrared microspectroscopy

Russell F. Howe; null Suwardiyanto; David J. Price; Maria Castro; Paul A. Wright; Alex Greenaway; Mark D. Frogley; Gianfelice Cinque

doi:10.1007/s11244-018-0890-9

Reactions of dimethylether in single crystals of the silicoaluminophosphate STA-7 studied via Operando synchrotron infrared microspectroscopy

Russell F. Howe^*, Suwardiyanto, David J. Price, Maria Castro, Paul A. Wright, Alex Greenaway, Mark D. Frogley, Gianfelice Cinque

^*Corresponding author for this work

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

Abstract

Synchrotron infrared micro-spectroscopy has been applied to measure in situ the reaction of dimethylether in single crystals of the silicoaluminophosphate STA-7. The crystals are found to contain a uniform and homogeneous distribution of acidic hydroxyl groups. Dimethylether is hydrogen bonded to the hydroxyl groups at low temperatures, but evidence is found for dissociation to form surface methoxy groups above 473 K, and aromatic hydrocarbon pool species above 573 K. From time resolved infrared measurements coupled with MS analysis of evolved products it is concluded that alkene formation occurs via a direct mechanism from reaction of dimethylether with surface methoxy groups.

Original language	English
Pages (from-to)	199-212
Number of pages	14
Journal	Topics in Catalysis
Volume	61
Issue number	3-4
Early online date	16 Jan 2018
DOIs	https://doi.org/10.1007/s11244-018-0890-9
Publication status	Published - Apr 2018

Keywords

Dimethylether
Hydrocarbon pool
Infrared microspectroscopy
STA-7

Access to Document

10.1007/s11244-018-0890-9Licence: CC BY

Wright_2018_TC_Dimethylether_CC
© The Author(s) 2018. Open Access. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
Final published version, 3.25 MBLicence: CC BY

Cite this

@article{ae96bdadd67245e78f759bdff6eb057b,

title = "Reactions of dimethylether in single crystals of the silicoaluminophosphate STA-7 studied via Operando synchrotron infrared microspectroscopy",

abstract = "Synchrotron infrared micro-spectroscopy has been applied to measure in situ the reaction of dimethylether in single crystals of the silicoaluminophosphate STA-7. The crystals are found to contain a uniform and homogeneous distribution of acidic hydroxyl groups. Dimethylether is hydrogen bonded to the hydroxyl groups at low temperatures, but evidence is found for dissociation to form surface methoxy groups above 473 K, and aromatic hydrocarbon pool species above 573 K. From time resolved infrared measurements coupled with MS analysis of evolved products it is concluded that alkene formation occurs via a direct mechanism from reaction of dimethylether with surface methoxy groups.",

keywords = "Dimethylether, Hydrocarbon pool, Infrared microspectroscopy, STA-7",

author = "Howe, {Russell F.} and Suwardiyanto and Price, {David J.} and Maria Castro and Wright, {Paul A.} and Alex Greenaway and Frogley, {Mark D.} and Gianfelice Cinque",

note = "Financial support from the EPSRC Catalysis Hub (Suwardiyanto) and an Industrial CASE Award (EPSRC/BP Chemicals) (Price) are also acknowledged.",

year = "2018",

month = apr,

doi = "10.1007/s11244-018-0890-9",

language = "English",

volume = "61",

pages = "199--212",

journal = "Topics in Catalysis",

issn = "1022-5528",

publisher = "Springer",

number = "3-4",

}

TY - JOUR

T1 - Reactions of dimethylether in single crystals of the silicoaluminophosphate STA-7 studied via Operando synchrotron infrared microspectroscopy

AU - Howe, Russell F.

AU - Suwardiyanto, null

AU - Price, David J.

AU - Castro, Maria

AU - Wright, Paul A.

AU - Greenaway, Alex

AU - Frogley, Mark D.

AU - Cinque, Gianfelice

N1 - Financial support from the EPSRC Catalysis Hub (Suwardiyanto) and an Industrial CASE Award (EPSRC/BP Chemicals) (Price) are also acknowledged.

PY - 2018/4

Y1 - 2018/4

N2 - Synchrotron infrared micro-spectroscopy has been applied to measure in situ the reaction of dimethylether in single crystals of the silicoaluminophosphate STA-7. The crystals are found to contain a uniform and homogeneous distribution of acidic hydroxyl groups. Dimethylether is hydrogen bonded to the hydroxyl groups at low temperatures, but evidence is found for dissociation to form surface methoxy groups above 473 K, and aromatic hydrocarbon pool species above 573 K. From time resolved infrared measurements coupled with MS analysis of evolved products it is concluded that alkene formation occurs via a direct mechanism from reaction of dimethylether with surface methoxy groups.

AB - Synchrotron infrared micro-spectroscopy has been applied to measure in situ the reaction of dimethylether in single crystals of the silicoaluminophosphate STA-7. The crystals are found to contain a uniform and homogeneous distribution of acidic hydroxyl groups. Dimethylether is hydrogen bonded to the hydroxyl groups at low temperatures, but evidence is found for dissociation to form surface methoxy groups above 473 K, and aromatic hydrocarbon pool species above 573 K. From time resolved infrared measurements coupled with MS analysis of evolved products it is concluded that alkene formation occurs via a direct mechanism from reaction of dimethylether with surface methoxy groups.

KW - Dimethylether

KW - Hydrocarbon pool

KW - Infrared microspectroscopy

KW - STA-7

U2 - 10.1007/s11244-018-0890-9

DO - 10.1007/s11244-018-0890-9

M3 - Article

AN - SCOPUS:85040610093

SN - 1022-5528

VL - 61

SP - 199

EP - 212

JO - Topics in Catalysis

JF - Topics in Catalysis

IS - 3-4

ER -

Reactions of dimethylether in single crystals of the silicoaluminophosphate STA-7 studied via Operando synchrotron infrared microspectroscopy

Abstract

Keywords

Access to Document

Fingerprint

Cite this