Collisional excitation of propyne (CH3CCH) by He atoms
status: published
Determining the fouling tendency of different feedstocks in the Fouling Assessment Setup
The use of heavier feedstocks, or even the possibility of direct conversion of crude oil into chemicals has created new challenges for the steam cracking process, as severe fouling in the different sections of steam crackers is observed then. In order to obtain a more fundamental understanding about the fouling phenomenon and its relation to feedst...
Effect of reactor alloy composition on coke formation during butane and ethane steam cracking
The use of highly specialized alloys in ethane steam cracking environments can lead to reduced coking and alloy aging. However, the fouling resistance of these materials when exposed to heavier feedstocks, such as butane, especially at higher temperatures (950 degrees C) and toward the end of a cracking run, remained unknown. To address this knowle...
Deciphering environmental forcings in the distribution of meiofauna and nematodes in mangroves of the Atlantic-Caribbean...
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Mangroves develop under environmental conditions and anthropogenic pressures whose impact on benthic meiofauna remains poorly understood. It is unclear how meiofauna communities are structured according to local sedimentary conditions. This study was designed to characterize the community structure of meiofauna and nematodes (dominant taxa) and the...
An experimental and kinetic modeling study on the low-temperature oxidation of oxymethylene ether-2 (OME-2) by means of ...
International audience
Zeolites as equilibrium-shifting agents in shuttle catalysis
status: published
Experimental and theoretical study of the low-temperature kinetics of the reaction of CN with CH2O and implications for ...
Rate coefficients for the reaction of CN with CH2O were measured for the first time below room temperature in the range 32-103 K using a pulsed Laval nozzle apparatus together with the Pulsed Laser Photolysis-Laser-Induced Fluorescence technique. The rate coefficients exhibited a strong negative temperature dependence, reaching (4.62 ± 0.84) × 10-1...
Carburization of High-Temperature Alloys during Steam Cracking: The Impact of Alloy Composition and Temperature
status: Published online
One relation for all wavelengths : the far-ultraviolet to mid-infrared Milky Way spectroscopic R(V)-dependent dust extin...
Dust extinction is one of the fundamental measurements of dust grain sizes, compositions, and shapes. Most of the wavelength-dependent variations seen in Milky Way extinction are strongly correlated with the single parameter R(V) = A(V)/E(B - V). Existing R(V)-dependent extinction relationships use a mixture of spectroscopic and photometry observat...
Carburization of high-temperature alloys during steam cracking : the impact of alloy composition and temperature
Prior studies found that the carburization tendency is negligible for technically developed materials at temperatures below 900 degrees C, especially for Al-containing alloys compared to non-Al-containing alloys applied in steam cracking reactors. However, it is unclear whether this benefit remains at higher temperatures. This work compared coke de...
