Microwave discharge synthesis

Emeldus, H. J., Tittle, B. Synthesis of pentafluorsulphur chloride and sulphur oxide tetrafluoride in the microwave discharge. J. Chem. Soc. 1963, 1644. 

The synthesis of a rare gas fluoride ordinarily involves the use of elementary fluorine and the concomitant special equipment used in handling fluorine. However, Milligan and Sears (39) have described a fluorination technique which avoids the use of fluorine and consequently deserves serious consideration as a general method. They passed mixtures of xenon and CF4 through a microwave discharge and obtained good yields of XeF2. 

The microwave discharge operating in a magnetie field under ECR eonditions, where the experiments on complete CO2 dissociation were performed (Asisov, 1980), will be diseussed in Chapter 6 regarding NO synthesis in air. It was a pulse-periodic discharge, sustained by microwave pulses with wavelength 8 mm, power in eaeh pulse of 30 kW, pulse duration... 

Evolution of Vibrational Temperature of Nitrogen Molecules in Non-Equilibrium ECR Microwave Discharge During Plasma-Chemical NO Synthesis... 

Plasma-chemical experiments with NO synthesis in the non-equilibrium ECR microwave discharge (see Sections 6.4.1 and 6.4.2) resulted in observation of the highest energy efficiency of the process (rj 30%), which corresponds to an NO energy cost close to... 

Synthesis of Krp2 in Non-Equiiibrium Microwave Discharge in Magnetic Fieid... 

High energy efficiency of Krp2 synthesis with surface product stabilization was achieved in experiments with non-equilibrium microwave discharge in a magnetic field (Asisov,... 

This process in stoichiometric SO2-O2 mixture was investigated in strongly non-eqnilibrinm plasma conditions of a microwave discharge (Baddur and Dandus, 1970), similar to the one mentioned earlier regarding CI2 synthesis. Optimal SO3 synthesis was achieved in these experiments at a pressnre of 10 Torr and a microwave discharge power of 250 W. The high efficiency of the process (6-141) was achieved in atmospheric-pressure plasmas where SO2 was only a small admixture to air (see Section 11.7). 

Oxygen in a small concentration was found to be essential for the synthesis of diamond by hot-filament chemical vapor deposition on silicon in the presence of methane [18] and by magnetoactive microwave discharge [19]. 

Selective synthesis of acetylene (>90%) from methane was accomplished by microwave plasma reactions.568 Conversion of methane to acetylene by using direct current pulse discharge was performed under conditions of ambient temperature and atmospheric pressure.569 The selectivity of acetylene was >95% at methane conversion levels ranging from 16 to 52%. In this case oxygen was used to effectively remove deposited carbon and stabilize the state of discharge. Similar high... 

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