Optimal conditions in converting methanol to dimethyl ether, methyl formate, and hydrogen utilizing a double membrane heat exchanger reactor

Molecular cloud cores are often found to contain regions with high abundances of organic molecules such as formaldehyde, methanol, ethanol, dimethyl ether, and methyl formate. First we will review the status of observations of these molecules in a number of sources and discuss some of the limitations of present techniques. Then we will discuss systematic factors involved in the conversion of column densities into fractional abundances and introduce an independent method of calibrating that conversion. Finally we will present recent results from high spatial resolution observations of W3(OH).

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Tropospheric Oxidation Mechanism of Dimethyl Ether and Methyl Formate

The Journal of Physical Chemistry A ◽

10.1021/jp9919718 ◽

2000 ◽

Vol 104 (6) ◽

pp. 1171-1185 ◽

Cited By ~ 47

Author(s):

David A. Good ◽

Joseph S. Francisco

Keyword(s):

Dimethyl Ether ◽

Methyl Formate ◽

Oxidation Mechanism

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Methyl formate and Dimethyl Ether Electro-oxidation on Pt-Pd-Sn Catalyst Supported on Carbon Nanotube Decorated with Carbon Dots

Materials Today Sustainability ◽

10.1016/j.mtsust.2021.100095 ◽

2021 ◽

pp. 100095

Author(s):

Vijay Bhooshan Kumar ◽

Diwakar Kashyap ◽

Hanan Teller ◽

Medhanie Gebremedhin Gebru ◽

Aharon Gedanken ◽

...

Keyword(s):

Carbon Nanotube ◽

Dimethyl Ether ◽

Carbon Dots ◽

Methyl Formate ◽

Electro Oxidation

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Risk Assessment of Hydrogen Production System by Dimethyl Ether Steam Reforming With the Use of Nuclear Power

Volume 1: Plant Operations, Maintenance, Engineering, Modifications and Life Cycle; Component Reliability and Materials Issues; Next Generation Systems ◽

10.1115/icone17-75216 ◽

2009 ◽

Author(s):

Kazuo Koguchi ◽

Shigeo Kasai ◽

Makoto Takahashi ◽

Toshio Wakabayashi

Keyword(s):

Risk Assessment ◽

Heat Exchanger ◽

Hydrogen Production ◽

Dimethyl Ether ◽

Steam Reforming ◽

Nuclear Power ◽

Average Frequency ◽

Event Tree ◽

Event Tree Analysis ◽

Tree Analysis

Hydrogen is regarded as a clean fuel because it does not pollute when burned with air. In the case of commercial use, there is a need to research how to produce hydrogen more efficiency and large scale. Although there are some methods of hydrogen production, it can be considered that the heat of the nuclear reactor is promising method. In the recent studies on the hydrogen production with nuclear power, there has focused on the technical issues. Therefore, the object in this paper is to perform the risk assessment for a system of hydrogen production plant by Dimethyl Ether (DME) steam reforming with the use of nuclear power. First, one of the suitable systems with the DME steam reforming plant was selected PWR. A FMEA (Failure Mode and Effects analysis) was performed to identify initiating events. After identifying initiating events, event tree analysis (ETA) was performed to quantify the average frequency of an accident at this system. The result of the PSA, the safety of DME steam reforming plant with nuclear power depends on a rupture of reformer and heat exchanger between hydrogen and DME by the result of FMEA. Event tree analysis shows that the average frequency of hydrogen or DME explosion is 7.7×10−7 year−1 in the case of the rupture of the reformer and 1.9×10−8 year−1 in the case of the break of the heat exchanger.

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Optimal conditions for hydrogen production from coupling of dimethyl ether and benzene synthesis

International Journal of Hydrogen Energy ◽

10.1016/j.ijhydene.2010.10.049 ◽

2011 ◽

Vol 36 (1) ◽

pp. 299-310 ◽

Cited By ~ 14

Author(s):

M. Farsi ◽

M.H. Khademi ◽

A. Jahanmiri ◽

M.R. Rahimpour

Keyword(s):

Hydrogen Production ◽

Dimethyl Ether ◽

Optimal Conditions

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Determination of Dimethyl Ether in Air by Cataluminescence-Based Gas Sensor

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.739.537 ◽

2013 ◽

Vol 739 ◽

pp. 537-542 ◽

Cited By ~ 2

Author(s):

Chun Xiu Gu ◽

Zheng Xing ◽

Xin Cai ◽

Jie Zhang ◽

Bin Juan Gao ◽

...

Keyword(s):

Carbon Monoxide ◽

Gas Sensor ◽

Dimethyl Ether ◽

High Selectivity ◽

Optimal Conditions ◽

Optimized Conditions ◽

Luminescence Characteristics ◽

Versus Concentration ◽

Weak Interference

A rapid and sensitive cataluminescence-based gas sensor utilizing nanosized Y2MnO5as the sensing materials for determining dimethyl ether in air was proposed. The luminescence characteristics and the optimal conditions were investigated in detail. The gas sensor showed high selectivity for dimethyl ether at 620 nm and satisfying activity at 210°C under the optimized conditions. The linear range of cataluminescence intensity versus concentration of dimethyl ether was 5~120 mg/m3, and the detection limit (3σ) was 3 mg/m3. No or weak interference was observed while the foreign substances, such as formaldehyde, ammonia, ethanol, benzene, carbon monoxide and sulfur dioxide, were passing through the sensor under selected conditions. The gas sensor displayed good stability for continuously introducing dimethyl ether over 100 h, and allowed real-time monitoring of dimethyl ether in air.

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