Abstract: Methods of removing target impurities from a crude lithium bis(fluorosulfonyl)imide (LiFSI) to make a purified LiFSI product. In some embodiments, a purification method includes contacting crude LiFSI with a first anhydrous organic solvent to create a solution containing LiFSI and the target impurity(ies), wherein the LiFSI is soluble and the impurity(ies) is/are substantially insoluble. In some embodiments, a second anhydrous organic solvent is added to the solution to precipitate the target impurity(ies), which is then filtered to obtain a filtrate. In some embodiments, solvent is removed from the filtrate to obtain a solid mass containing LiFSI, which may then be contacted with a third anhydrous organic solvent in which the LiFSI is insoluble. The LiFSI may then be isolated from the third anhydrous organic solvent to obtain the purified LiFSI product. Also disclosed are purified LiFSI products and electrochemical devices utilizing purified LiFSI products, among other things.

Abstract: for Processes for converting a methane or a methane containing natural gas to a monohalogenated methane and other downstream basic commodity chemicals going through methanesulfonyl halide as a key intermediate, whereby following its formation, the methanesulfonyl halide is allowed to decompose under a substantially anhydrous condition, preferably in the presence of a catalyst complex, and whereby in addition to the monohalogenated halide, a hydrogen halide and a sulfur dioxide are also formed in the overall conversion, both of which may be recycled back to the beginning of the processes. Additionally, compositions utilizing such a key intermediate for the same purposes are also disclosed.

Abstract: Produce a sulfo-chlorinated hydrocarbon using liquid sulfur dioxide, a chlorinating agent such as chlorine or sulfuryl chloride, and a metal complex catalyst, the catalyst being represented as LnM where L is at least one of an amine, phosphine, chloride or oxide, n is an integer within a range of from 1 to 6, and M is a metal selected from a group consisting of copper (Cu), ruthenium (Ru), iron (Fe), chromium (Cr), lanthanum (La), nickel (Ni), palladium (Pd), rhodium (Rh), rhenium (Re), molybdenum (Mo) and manganese (Mn).

Abstract: Novel methods for preparing perfluoroalkanedi(sulfonyl chloride) are disclosed as are uses for these compounds. In one aspect, a method comprising reacting dibromoperfluoroalkane with Na2S2O4 followed by treating with chlorine, an organic compound, and then chlorine to form perfluoroalkanedi(sulfonyl chloride) is provided. Novel perfluoroalkanedi(sulfonyl bromide) compounds are also disclosed.

Abstract: Novel methods for preparing perfluoroalkanedi(sulfonyl chloride) are disclosed as are uses for these compounds. In one aspect, a method comprising reacting dibromoperfluoroalkane with Na2S2O4 followed by treating with chlorine, an organic compound, and then chlorine to form perfluoroalkanedi(sulfonyl chloride) is provided. Novel perfluoroalkanedi(sulfonyl bromide) compounds are also disclosed.

Abstract: In the process according to the invention for the manufacture of an alkanesulphonyl chloride RCH2—SO2Cl by oxidative chlorolysis of the corresponding mercaptan RCH2—SH, the mercaptan and water are introduced into the reaction mixture in the form of a dispersion of water in the mercaptan. This makes it possible to obtain both an alkanesulphonyl chloride of very good quality and a hydrochloric acid of commercial grade.

Abstract: Higher-alkane sulfonyl halides are prepared by contacting a sulfur-containing compound, a halogen-containing compound, and a phase transfer agent within a reaction zone under reaction conditions.

Abstract: The present invention provides a method for producing trifluoromethanesulfonyl chloride. This method includes the step of reacting trifluoromethanesulfonic acid with phosphorous trichloride and chlorine. With this method, trifluoromethanesulfonyl chloride can be easily and highly selectively produced at high yield. The reaction may be carried out at about atmospheric pressure. Furthermore, the reaction may be carried out in the presence of phosphorus oxychloride either under a pressurized condition or at about atmospheric pressure.

Abstract: A process for preparing alkane sulfonic acids and sulfonyl chlorides by oxidation of alkanethiols or dialkyl disulfides in the presence of nitric acid or nitric oxides as a catalyst and in the presence of bromide as a cocatalyst.

Abstract: A process is disclosed for the efficient production of high purity alkane sulfonic acid and/or alkane sulfonyl chloride product wherein a compound of the formula RSX, where X is hydrogen or --SR.sup.1 and R and R.sup.1 are alkyl radicals is continuously reacted with chlorine in aqueous hydrochloric acid to produce a turbulent evolution of hydrochloride gas, passing the reactants through stationary mixing elements to promote plug-flow, and separately withdrawing a product. Apparatus for this process is also disclosed.

Abstract: A formylated alkylbenzenesulfonyl halide compound represented by the following general formula (I): ##STR1## wherein R.sub.1 is an alkyl group having 1 to 5 carbon atoms; R.sub.2 and R.sub.3 are each a member selected from the group consisting of a hydrogen atom and alkyl groups having 1 to 5 carbon atoms; X is a halogen atom; the sulfonyl halide group is present at the ortho or para position while the formyl group at the para or ortho position relative to the group R.sub.1 when R.sub.2 and R.sub.3 are both a hydrogen atom, while the sulfonyl halide group and the formyl group are present at the para positions relative to the groups R.sub.1 and R.sub.2, respectively, when R.sub.2 is an alkyl group and R.sub.3 is a hydrogen atom, or the sulfonylhalide group and the formyl group are present at the para positions relative to the groups R.sub.1 and R.sub.2, respectively, when R.sub.2 and R.sub.

Abstract: Trifluoromethanesulphonyl chloride is prepared by reacting bis-(trifluoromethyl)-disulphane with chlorine and water in the liquid phase.

Abstract: A process for the preparation of perhaloalkanesulfinic and -sulfonic acids and derivatives of these acids. A perhaloalkanesulfinic acid salt is prepared by contacting a metal hydroxymethanesulfinate (preferably, a sodium, zinc or copper hydroxymethanesulfinate) with a perhaloalkyl halide group, in a polar solvent. Optionally, the perhaloalkanesulfinic acid salt is then converted to a perhaloalkanesulfinic or -sulfonic acid or a derivative of either of these acids.