Contributions of post-synthesized mesopore structures of ferrierite zeolite for gas-phase dimethyl ether carbonylation activity

Mesoporous ferrierite zeolite (FER) synthesized by a post-desilication method was applied for a gas-phase dimethyl ether (DME) carbonylation to confirm the contributions of the newly formed mesoporous structures above 10 nm in size. The distribution of surface acidic sites and extent of coke deposit...

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Published inThe Korean journal of chemical engineering Vol. 38; no. 6; pp. 1231 - 1239
Main Authors Nguyen, Thi Xuan, Moon, Ji Won, Jung, Hyun Seung, Han, Gui Young, Bae, Jong Wook
Format Journal Article
LanguageEnglish
Published New York Springer US 01.06.2021
Springer Nature B.V
한국화학공학회
Subjects
Aluminum
Biotechnology
Carbonyls
Catalysis
Catalytic activity
Chemistry
Chemistry and Materials Science
Coke
Dimethyl ether
Industrial Chemistry/Chemical Engineering
Lager
Mass transport
Materials Science
Recrystallization
Silicon
Synthesis
Transport phenomena
Zeolites
화학공학
Mesoporous Ferrierite (m-FER)
Methyl Acetate (MA)
Gas-phase Carbonylation
Post-desilication
Dimethyl Ether (DME)
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Summary:Mesoporous ferrierite zeolite (FER) synthesized by a post-desilication method was applied for a gas-phase dimethyl ether (DME) carbonylation to confirm the contributions of the newly formed mesoporous structures above 10 nm in size. The distribution of surface acidic sites and extent of coke deposition was significantly altered, resulting in showing different catalytic activity and stability, which were mainly caused by the post-synthesized larger mesopores on the FER. The newly formed mesoporous structures in the range of 5–40 nm on the pristine seed-derived FER (SFER) with a Si/Al molar ratio of 10.4 were largely changed by a desilication/recrystallization duration, and the mesopores significantly increased the surface acidic sites with similar extent of crystallinity even with a lower Si/Al ratio of 6.7–8.6. The increased strong acidic sites corresponding to Brønsted acid sites after an optimal desilication duration for ~3 h on the mesoporous SFER (m-SFER(3)) were mainly responsible for an increased DME carbonylation activity with smaller formation of coke precursors due to facile mass transport phenomena through its lager mesopores.
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ISSN:0256-1115
1975-7220
DOI:10.1007/s11814-021-0806-4