Astrochemistry of dimethyl ether
نویسندگان
چکیده
منابع مشابه
A short synthesis of (±)-cherylline dimethyl ether
A synthesis of ±-cherylline dimethyl ether is reported. The key steps involved are Michael-type addition, radical azidonation of an aldehyde, Curtius rearrangement, and reduction of an isocyanate intermediate followed by Pictet-Spengler cyclization.
متن کاملEffects of Buffer Gas Composition on Autoignition of Dimethyl Ether
Experimental and numerical studies are conducted on the thermal, chemical and dilution effects of buffer gas composition on autoignition of dimethyl ether (DME). The buffer gases considered are nitrogen (N2), a mixture of N2 and argon (Ar) at a mole ratio of 50%/50% and a mixture of Ar and carbon dioxide (CO2) at a mole ratio of 61.2%/38.8%. Experiments are performed using a rapid compression m...
متن کاملApplication of Novel Gamma Alumina Nano Structure for Preparation of Dimethyl ether from Methanol
In this study, preparation of nano-sized gamma alumina with high specific surface area and high yield by thereaction between aluminum nitrate and sodium carbonate, without using any surfactant is reported. Bohemite (Aluminum oxyhydroxide) was prepared as a precursor by strict control of pH and reaction temperature. The gel produced was purified by washing fol...
متن کاملLow-Temperature Oxidation of Dimethyl Ether to Polyoxymethylene Dimethyl Ethers over CNT-Supported Rhenium Catalyst
Due to its excellent conductivity, good thermal stability and large specific surface area, carbon nano-tubes (CNTs) were selected as support to prepare a Re-based catalyst for dimethyl ether (DME) direct oxidation to polyoxymethylene dimethyl ethers (DMMx). The catalyst performance was tested in a continuous flow type fixed-bed reactor. H3PW12O40 (PW12) was used to modify Re/CNTs to improve its...
متن کاملStudy of Dimethyl Ether for Limited Streamer Tubes*
Position resolution and lifetime have been studied for one-atmosphere D\IE in half-inch diameter aluminum tube chambers operated in the limited streamer mode. The radial resolution was measured by timing to be CT, = 73 pm. The longitudinal resolution was measured by charge division to be < 0.3% of the wire length. No significant gain changes were seen after 12 C/cm. Submitted to Nuclear Instrum...
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ژورنال
عنوان ژورنال: Astronomy & Astrophysics
سال: 2005
ISSN: 0004-6361,1432-0746
DOI: 10.1051/0004-6361:20053651