Oligomerization vs. methylation of propene in the conversion of dimethyl ether (or methanol) to hydrocarbons

1984 ◽  
Vol 23 (3) ◽  
pp. 449-452 ◽  
Author(s):  
Rafael L. Espinoza
Keyword(s):  
Dimethyl Ether ◽  
Methanol To Hydrocarbons

scholarly journals QM/MM study of the stability of dimethyl ether in zeolites H-ZSM-5 and H-Y

2020 ◽  
Author(s):  
Stefan Adrian F Nastase ◽  
C. Richard A. Catlow ◽  
Andrew J Logsdail
Keyword(s):  
Dimethyl Ether ◽  
Carbon Sources ◽  
Carbon Bond ◽  
Methanol To Hydrocarbons ◽  
Carbon Carbon Bond ◽  
Higher Hydrocarbons ◽  
The Stability

The methanol-to-hydrocarbons (MTH) process transforms C1 carbon sources to higher hydrocarbons, but details of the mechanism that leads to the formation of the first carbon-carbon bond remain unclear. Here, we...

New insights into catalyst deactivation and product distribution of zeolites in the methanol-to-hydrocarbons (MTH) reaction with methanol and dimethyl ether feeds

2017 ◽  
Vol 7 (13) ◽  
pp. 2700-2716 ◽  
Author(s):  
Juan S. Martinez-Espin ◽  
Magnus Mortén ◽  
Ton V. W. Janssens ◽  
Stian Svelle ◽  
Pablo Beato ◽  
...  
Keyword(s):  
Dimethyl Ether ◽  
Catalyst Deactivation ◽  
Product Distribution ◽  
Zeolitic Catalyst ◽  
Methanol To Hydrocarbons

The ability of a zeolitic catalyst to dehydrate methanol to dimethyl ether affects catalyst deactivation and product distribution during the methanol-to-hydrocarbons (MTH) reaction.

Efficient Production of Light Olefin Based on Methanol Dehydration: Simulation and Design Improvement

2020 ◽  
Vol 23 ◽  
Author(s):  
S. Majid Abdoli ◽  
Mahsa Kianinia
Keyword(s):  
Dimethyl Ether ◽  
Flow Reactor ◽  
New Technology ◽  
Plug Flow ◽  
Light Olefins ◽  
Efficient Production ◽  
Actual Process ◽  
Light Olefin ◽  
Aspen Hysys ◽  
Improved Design

Background: Ethylene, propylene, and butylene as light olefins are the most important intermediates in the petrochemical industry worldwide. Methanol to olefins (MTO) process is a new technology based on catalytic cracking to produce ethylene and propylene from methanol. Aims and Objective: This study aims to simulate the process of producing ethylene from methanol by using Aspen HYSYS software from the initial design to the improved design. Methods: Ethylene is produced in a two-step reaction. In an equilibrium reactor, the methanol is converted to dimethyl ether by an equilibrium reaction. The conversion of the produced dimethyl ether to ethylene is done in a conversion reactor. Changes have been made to improve the conditions and get closer to the actual process design done in the industry. The plug flow reactor has been replaced by the equilibrium reactor, and the distillation column was employed to separate the dimethyl ether produced from the reactor. Result and Conclusion: The effect of the various parameters on the ethylene production was investigated. Eventually, ethylene is

Transformation of methanol to hydrocarbons over Y zeolites with varying Si/Al ratio

1987 ◽  
Vol 52 (7) ◽  
pp. 1701-1707 ◽  
Author(s):  
Miloslav Křivánek ◽  
Nguyen Thiet Dung ◽  
Pavel Jírů
Keyword(s):  
Catalytic Activity ◽  
Reaction Time ◽  
Coke Formation ◽  
Aliphatic Hydrocarbons ◽  
Y Zeolite ◽  
Y Zeolites ◽  
Methanol To Hydrocarbons

The catalytic activity of Na, H-Y zeolite samples with a varying Si/Al ratio (2·5 to 20) in the transformation of methanol was determined. The amounts of formed individual aliphatic hydrocarbons as function of reaction time were correlated with the amount of Bronsted and Lewis centres on the catalysts. The effect of coke formation on the over-all course of the reaction has been demonstrated.

Strategies for improving CO2 utilization in microchannel enabled production of dimethyl ether

2020 ◽  
Vol 151 ◽  
pp. 107914 ◽  
Author(s):  
Ugurcan Tozar ◽  
Ahmet K. Avci
Keyword(s):  
Dimethyl Ether ◽  
Co2 Utilization
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