scholarly journals The catalytic activity of Co/kaolinite catalyst for dimethyl ether synthesis via methanol dehydration

2020 ◽  
Vol 6 ◽  
pp. 469-473
Author(s):  
Imran Rosadi ◽  
Pakpoom Athikaphan ◽  
Phatchareephon Chantanachat ◽  
Arthit Neramittagapong ◽  
Sutasinee Neramittagapong
Keyword(s):  
Catalytic Activity ◽  
Dimethyl Ether ◽  
Methanol Dehydration ◽  
Dimethyl Ether Synthesis ◽  
Ether Synthesis

Dimethyl ether synthesis via methanol dehydration over Ta-supported catalysts

2019 ◽  
Vol 582 ◽  
pp. 117088 ◽  
Author(s):  
Concepción Herrera ◽  
Marina Cortés-Reyes ◽  
M. Ángeles Larrubia ◽  
M. Vanesa Domínguez-Barroso ◽  
M. Rocío Díaz-Rey ◽  
...  
Keyword(s):  
Dimethyl Ether ◽  
Supported Catalysts ◽  
Methanol Dehydration ◽  
Dimethyl Ether Synthesis ◽  
Ether Synthesis

Dimethyl ether synthesis via methanol dehydration: Effect of zeolite structure

2015 ◽  
Vol 502 ◽  
pp. 215-220 ◽  
Author(s):  
Enrico Catizzone ◽  
Alfredo Aloise ◽  
Massimo Migliori ◽  
Girolamo Giordano
Keyword(s):  
Dimethyl Ether ◽  
Methanol Dehydration ◽  
Zeolite Structure ◽  
Dimethyl Ether Synthesis ◽  
Ether Synthesis ◽  
Dehydration Effect

Dimethyl Ether Synthesis via Methanol Dehydration over Diatomite Catalyst Modified Using Hydrochloric Acid

2014 ◽  
Vol 931-932 ◽  
pp. 42-46 ◽  
Author(s):  
Watcharakorn Pranee ◽  
Pornsawan Assawasaengrat ◽  
Arthit Neramittagapong ◽  
Sutasinee Neramittagapong
Keyword(s):  
Hydrochloric Acid ◽  
Dimethyl Ether ◽  
Active Sites ◽  
Fixed Bed ◽  
Methanol Conversion ◽  
Catalytic Performance ◽  
Fixed Bed Reactor ◽  
Methanol Dehydration ◽  
Dimethyl Ether Synthesis ◽  
Ether Synthesis

The synthesis of dimethyl ether via methanol dehydration has been carried out over untreated-diatomite catalyst (DM) and hydrochloric acid modified treatment on diatomite catalyst (DMHC). The reactions were carried out in a fixed-bed reactor. The effects of hydrochloric acid modifications of diatomite on its catalytic performance were studied. The characterization such as XRD, SEM, FT-IR and FT-Raman had no deformation after HCl-modified treatment on catalysts. DMHC catalyst apparently gave the higher methanol conversion rate than DM due to the acidity while the selectivity of dimethyl ether from 250 to 350°C was slightly changed. The acidity was depended upon Al(IV) ions; nevertheless, both Al(V) and Al(VI) were affected and hence increasing the basic active sites. Not only was the competitively catalytic methanol dehydrogenation preferred with basic condition but also methanol-blocking water molecule interaction was the unwanted reaction. In this investigation, the chemical-bond arrangements of silicon and aluminium ions were proposed with solid MAS/NMR. The DMHC catalyst exhibited better DME yield than the DM catalyst, and it could be used as a selective catalyst for DME synthesis from methanol.

Sign in / Sign up

Export Citation Format

Share Document