Comparison of theoretical methods for the determination of the protonation and deprotonation energies of ammonia, water, hydrogen fluoride, phosphine, hydrogen sulfide, hydrogen chloride and hydrogen cyanide

1990 ◽  
Vol 94 (14) ◽  
pp. 5514-5518 ◽  
Author(s):  
Janet E. Del Bene ◽  
Isaiah. Shavitt
Keyword(s):  
Hydrogen Sulfide ◽  
Hydrogen Chloride ◽  
Hydrogen Fluoride ◽  
Hydrogen Cyanide ◽  
Ammonia Water ◽  
Theoretical Methods ◽  
Water Hydrogen

Reaction of dimethyl sulfoxide with chlorothiolformates, hydrogen chloride, hydrogen fluoride, and hexafluoroisopropanol

1978 ◽  
Vol 56 (22) ◽  
pp. 2884-2888 ◽  
Author(s):  
Alan Queen ◽  
Alberta E. Lemire ◽  
Alexander F. Janzen ◽  
Michael N. Paddon-Row
Keyword(s):  
Molecular Weight ◽  
Dimethyl Sulfoxide ◽  
Hydrogen Chloride ◽  
Hydrogen Fluoride ◽  
Elemental Analysis ◽  
Molecular Weight Determination ◽  
Tert Butyl ◽  
Low Concentrations ◽  
Chloride Adduct

Dimethyl sulfoxide reacts with phenyl chlorothiolformate according to the stoichiometry:[Formula: see text]p-Chlorophenyl and tert-butyl chlorothiolformate appeared to react in a similar manner. The 1:1 hydrogen chloride adduct Me2SO:HCl was characterized by elemental analysis and proton and carbon nmr. A cryoscopic molecular weight determination of the adduct Me2SO:HOCH(CF3)2 showed it to be monomeric at low concentrations but associated at higher concentrations, suggesting a monomer–dimer equilibrium. The 1:2 adduct Me2SO:2HF is formed by the addition of anhydrous HF to dimethyl sulfoxide.

Conductimetric Gas Separation-Flow Injection Determination of Ammonia in Gaseous Process Streams

1997 ◽  
Vol 62 (4) ◽  
pp. 609-619 ◽  
Author(s):  
Vlastimil Kubáň
Keyword(s):  
Carbon Dioxide ◽  
Carbon Monoxide ◽  
Hydrogen Sulfide ◽  
Sulfur Dioxide ◽  
Hydrogen Cyanide ◽  
Separation Flow ◽  
Ammonia Content ◽  
Process Gas ◽  
Capillary Membrane

Ammonia (up to 0.3 vol.%) can be determined (RSDs < 2%) after separation from a process gas stream containing (vol.%): carbon dioxide (0.3-20), hydrogen sulfide (< 0.4), hydrogen cyanide (< 1.5 . 10-4), sulfur dioxide (1), carbon monoxide (< 3) in 50-90 vol.% nitrogen and hydrocarbons. The ammonia content in sample is determined through changes in the conductivity of an acceptor stream (3 mM boric acid) caused by absorption of the analyte passed through a Nafion capillary membrane.

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