scholarly journals Quantifying Effects of Active Site Proximity on Rates of Methanol Dehydration to Dimethyl Ether over Chabazite Zeolites through Microkinetic Modeling

2021 ◽  
Author(s):  
Grant Marsden ◽  
Pavlo Kostetskyy ◽  
Ryoh-Suke Sekiya ◽  
Alexander Hoffman ◽  
Songhyun Lee ◽  
...  
Keyword(s):  
Dimethyl Ether ◽  
Active Site ◽  
Methanol Dehydration ◽  
Microkinetic Modeling

Experimental Study and Modeling of an Adiabatic Fixed-bed Reactor for Methanol Dehydration to Dimethyl Ether

2009 ◽  
Vol 17 (4) ◽  
pp. 630-634 ◽  
Author(s):  
M. Fazlollahnejad ◽  
M. Taghizadeh ◽  
A. Eliassi ◽  
G. Bakeri
Keyword(s):  
Experimental Study ◽  
Dimethyl Ether ◽  
Fixed Bed ◽  
Fixed Bed Reactor ◽  
Methanol Dehydration

Synthesis and Characterization of Different γ-Al2O3 Nanocatalysts for Methanol Dehydration to Dimethyl Ether

2012 ◽  
Vol 10 (1) ◽  
Author(s):  
Seyyed Ya'ghoob Hosseini ◽  
Mohammad Reza Khosravi Nikou
Keyword(s):  
Dimethyl Ether ◽  
Solid Acid Catalyst ◽  
Fixed Bed ◽  
Operating Parameter ◽  
Textural Properties ◽  
Ammonia Solution ◽  
Precipitation Method ◽  
High Yield ◽  
Methanol Dehydration ◽  
Adsorption Desorption

Abstract A simple co-precipitation method was utilized to synthesize γ-Al2O3 catalysts using aluminum nitrate nonahydrate as the source of aluminum cations for methanol dehydration to dimethyl ether (DME). Different precipitating agents comprising ammonium carbonate, ammonium bicarbonate and ammonia solutions were used for preparation of the samples. The catalysts were characterized by XRD, FTIR, SEM, NH3-TPD and N2 adsorption-desorption techniques. The sample prepared by ammonia solution had the highest acidity among the synthesized catalysts. Also, N2 adsorption-desorption results showed suitable textural properties for all of the synthesized samples. Vapor phase dehydration of methanol to DME was performed in the fixed bed micro reactor over the synthesized catalysts and commercial one for comparison purposes. The effects of different characteristics of catalysts such as surface area, acidity, sintering factor and temperature as an operating parameter on performance of catalysts were investigated. The catalyst prepared by ammonia solution showed best catalytic activity due to the suitable textural properties and high amount of acidic sites. Also, the results showed that only high acid strength can’t result high yield of DME for a solid acid catalyst.

scholarly journals Deactivation of a Biomass-Derived Zirconium-Doped Phosphorus-Containing Carbon Catalyst in the Production of Dimethyl Ether from Methanol Dehydration

2021 ◽  
Author(s):  
Javier Torres-Liñán ◽  
Miguel García-Rollán ◽  
Juana M. Rosas ◽  
José Rodríguez-Mirasol ◽  
Tomás Cordero
Keyword(s):  
Dimethyl Ether ◽  
Methanol Dehydration ◽  
Carbon Catalyst ◽  
Phosphorus Containing

Catalytic performance of hierarchical H-ZSM-5/MCM-41 for methanol dehydration to dimethyl ether

2013 ◽  
Vol 22 (5) ◽  
pp. 769-777 ◽  
Author(s):  
Yu Sang ◽  
Hongxiao Liu ◽  
Shichao He ◽  
Hansheng Li ◽  
Qingze Jiao ◽  
...  
Keyword(s):  
Dimethyl Ether ◽  
Catalytic Performance ◽  
Methanol Dehydration ◽  
Mcm 41

Sulfonated catalysts for methanol dehydration to dimethyl ether (DME)

2019 ◽  
Vol 113 ◽  
pp. 64-69 ◽  
Author(s):  
Vincenzo Barbarossa ◽  
Rosanna Viscardi ◽  
Giovanni Maestri ◽  
Raimondo Maggi ◽  
Daniele Mirabile Gattia ◽  
...  
Keyword(s):  
Dimethyl Ether ◽  
Methanol Dehydration
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