نتایج جستجو برای: thermolysis method

تعداد نتایج: 1630633  

2012
Qingyu Kong Francois Baudelet Jun Han Sebastien Chagnot Laurent Barthe Jon Headspith Roger Goldsbrough Frederic E. Picca Olivier Spalla

Microsecond (μs) time-resolved extended X-ray absorption fine structure spectroscopy (EXAFS) has been developed using an energy-dispersive EXAFS (EDE) setup equipped with a silicon Quantum Detector ULTRA. The feasibility was investigated with a prototypical thermally driven redox reaction, the thermal decomposition of (NH₄)₂[PtCl₆]. EXAFS data were collected with snapshots every 60 μs during th...

2015
Mingbao Feng Ruijuan Qu Zhongbo Wei Liansheng Wang Ping Sun Zunyao Wang

The thermal decomposition of Nafion N117 membrane, a typical perfluorosulfonic acid membrane that is widely used in various chemical technologies, was investigated in this study. Structural identification of thermolysis products in water and methanol was performed using liquid chromatography-electrospray ionization-tandem mass spectrometry (LC/ESI-MS/MS). The fluoride release was studied using ...

Journal: :Journal of Applied Polymer Science 1995

Journal: : 2022

The main purpose of this study is to investigate the thermal stability and mechanism decomposition Mogoin gol coal, possibility liquefaction by pyrolysis thermolysis, enriching heavy liquids reduce mineral content coal improve its quality. Under purpose, was characterized proximate ultimate analysis, thermogravimetry, investigated (thermolysis pyrolysis). Thermogravimetric analysis performed us...

Journal: :Physical chemistry chemical physics : PCCP 2015
Xiao-Yu Wu Le Chang Mruthunjaya Uddi Patrick Kirchen Ahmed F Ghoniem

Hydrogen production from water thermolysis can be enhanced by the use of perovskite-type mixed ionic and electronic conducting (MIEC) membranes, through which oxygen permeation is driven by a chemical potential gradient. In this work, water thermolysis experiments were performed using 0.9 mm thick La0.9Ca0.1FeO3-δ (LCF-91) perovskite membranes at 990 °C in a lab-scale button-cell reactor. We ex...

2013
Åsmund Kaupang Tore Bonge-Hansen

In this work, we introduce a new class of halodiazocarbonyl compounds, α-halodiazoacetamides, which through a metal-free, ambient-temperature thermolysis perform intramolecular C-H insertions to produce α-halo-β-lactams. When carried out with α-bromodiazoacetamides bearing cyclic side chains, the thermolysis reaction affords bicyclic α-halo-β-lactams, in some cases in excellent yields, dependin...

2011
Lin-Quan Liao Qi-Long Yan Ya Zheng Zhen-Wei Song Jun-Qiang Li Peng Liu

The thermal decomposition mechanism of a newly designed composite material KClO3-HMX (KC-HMX) is investigated by combined TG-DSC-FTIR technique and T/Jump in-situ thermolysis cell/FTIR (T/Jump FTIR) technique.It is shown that KC-HMX began to decompose at about 266°C without melting, and the fast stage of mass loss at the temperature range of 268.4~290.1°C is considered to be the result of the t...

Journal: :Canadian Journal of Chemistry 1972

Journal: :Organic letters 2011
Vincent Tran Thomas G Minehan

Mild thermolysis of tert-butyl alkynyl ethers furnishes aldoketenes, which undergo facile [2 + 2] cycloaddition reactions with pendant di- and trisubstituted alkenes. A wide variety of cis-fused cyclobutanones are produced in moderate to high diastereoselectivity and good to excellent yields by this method, and free hydroxyl groups are tolerated in the ene-ynol ether starting materials. Enol-yn...

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