Dimethyl ether-to-olefins over aluminum rich ZSM-5: The role of Ca and La as modifiers

Idris A. Bakare; Oki Muraza; Mohammed A. Sanhoob; Koji Miyake; Yuichiro Hirota; Zain H. Yamani; Norikazu Nishiyama

doi:10.1016/j.fuel.2017.08.117

Dimethyl ether-to-olefins over aluminum rich ZSM-5: The role of Ca and La as modifiers

Idris A. Bakare, Oki Muraza^*, Mohammed A. Sanhoob, Koji Miyake, Yuichiro Hirota, Zain H. Yamani, Norikazu Nishiyama

^*Corresponding author for this work

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

46 Scopus citations

Abstract

Dimethyl ether (DME) has a strategic role both as an alternative fuel and a feedstock for petrochemicals. Aluminum rich H-ZSM-5 modified with Ca and La species were investigated in the conversion of Dimethyl ether (DME) to olefins. The crystallinity and morphology of Ca-ZSM-5, La-ZSM-5 and Ca-La-ZSM-5 were similar to the parent H-ZSM-5 as observed in XRD and FE-SEM analysis. The addition of both Ca and La ions, and their co-impregnation affects the acidity of parent H-ZSM-5 zeolite. In addition, Ca and La ions also induced the formation of basic sites in the zeolite framework. DME conversion of over 97% was observed over all catalyst systems during the 2 h time on stream. Ca-ZSM-5 showed the highest selectivity to light olefins especially propylene due to the presence of weak and medium acid sites.

Original language	English
Pages (from-to)	18-26
Number of pages	9
Journal	Fuel
Volume	211
DOIs	https://doi.org/10.1016/j.fuel.2017.08.117
State	Published - 2018

Bibliographical note

Publisher Copyright:
© 2017 Elsevier Ltd

Keywords

Al rich H-ZSM-5
CaO
Dimethyl ether
LaO
Olefins

ASJC Scopus subject areas

General Chemical Engineering
Fuel Technology
Energy Engineering and Power Technology
Organic Chemistry

Access to Document

10.1016/j.fuel.2017.08.117

Cite this

@article{2195ae08ab7d4363ac9844d583cc4bb0,

title = "Dimethyl ether-to-olefins over aluminum rich ZSM-5: The role of Ca and La as modifiers",

abstract = "Dimethyl ether (DME) has a strategic role both as an alternative fuel and a feedstock for petrochemicals. Aluminum rich H-ZSM-5 modified with Ca and La species were investigated in the conversion of Dimethyl ether (DME) to olefins. The crystallinity and morphology of Ca-ZSM-5, La-ZSM-5 and Ca-La-ZSM-5 were similar to the parent H-ZSM-5 as observed in XRD and FE-SEM analysis. The addition of both Ca and La ions, and their co-impregnation affects the acidity of parent H-ZSM-5 zeolite. In addition, Ca and La ions also induced the formation of basic sites in the zeolite framework. DME conversion of over 97\% was observed over all catalyst systems during the 2 h time on stream. Ca-ZSM-5 showed the highest selectivity to light olefins especially propylene due to the presence of weak and medium acid sites.",

keywords = "Al rich H-ZSM-5, CaO, Dimethyl ether, LaO, Olefins",

author = "Bakare, \{Idris A.\} and Oki Muraza and Sanhoob, \{Mohammed A.\} and Koji Miyake and Yuichiro Hirota and Yamani, \{Zain H.\} and Norikazu Nishiyama",

note = "Publisher Copyright: {\textcopyright} 2017 Elsevier Ltd",

year = "2018",

doi = "10.1016/j.fuel.2017.08.117",

language = "English",

volume = "211",

pages = "18--26",

journal = "Fuel",

issn = "0016-2361",

}

TY - JOUR

T1 - Dimethyl ether-to-olefins over aluminum rich ZSM-5

T2 - The role of Ca and La as modifiers

AU - Bakare, Idris A.

AU - Muraza, Oki

AU - Sanhoob, Mohammed A.

AU - Miyake, Koji

AU - Hirota, Yuichiro

AU - Yamani, Zain H.

AU - Nishiyama, Norikazu

PY - 2018

Y1 - 2018

N2 - Dimethyl ether (DME) has a strategic role both as an alternative fuel and a feedstock for petrochemicals. Aluminum rich H-ZSM-5 modified with Ca and La species were investigated in the conversion of Dimethyl ether (DME) to olefins. The crystallinity and morphology of Ca-ZSM-5, La-ZSM-5 and Ca-La-ZSM-5 were similar to the parent H-ZSM-5 as observed in XRD and FE-SEM analysis. The addition of both Ca and La ions, and their co-impregnation affects the acidity of parent H-ZSM-5 zeolite. In addition, Ca and La ions also induced the formation of basic sites in the zeolite framework. DME conversion of over 97% was observed over all catalyst systems during the 2 h time on stream. Ca-ZSM-5 showed the highest selectivity to light olefins especially propylene due to the presence of weak and medium acid sites.

AB - Dimethyl ether (DME) has a strategic role both as an alternative fuel and a feedstock for petrochemicals. Aluminum rich H-ZSM-5 modified with Ca and La species were investigated in the conversion of Dimethyl ether (DME) to olefins. The crystallinity and morphology of Ca-ZSM-5, La-ZSM-5 and Ca-La-ZSM-5 were similar to the parent H-ZSM-5 as observed in XRD and FE-SEM analysis. The addition of both Ca and La ions, and their co-impregnation affects the acidity of parent H-ZSM-5 zeolite. In addition, Ca and La ions also induced the formation of basic sites in the zeolite framework. DME conversion of over 97% was observed over all catalyst systems during the 2 h time on stream. Ca-ZSM-5 showed the highest selectivity to light olefins especially propylene due to the presence of weak and medium acid sites.

KW - Al rich H-ZSM-5

KW - CaO

KW - Dimethyl ether

KW - LaO

KW - Olefins

UR - https://www.scopus.com/pages/publications/85029518106

U2 - 10.1016/j.fuel.2017.08.117

DO - 10.1016/j.fuel.2017.08.117

M3 - Article

AN - SCOPUS:85029518106

SN - 0016-2361

VL - 211

SP - 18

EP - 26

JO - Fuel

JF - Fuel

ER -

Dimethyl ether-to-olefins over aluminum rich ZSM-5: The role of Ca and La as modifiers

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

Access to Document

Fingerprint

Cite this