A continuous process for the preparation of propylene oxide, comprising providing a liquid feed stream comprising propene, hydrogen peroxide, methanol, water, at least one dissolved potassium salt of hydroxyethylidenediphosphonic acid, and optionally propane; passing the liquid feed stream provided in (i) into an epoxidation reactor comprising a catalyst comprising a titanium zeolite of structure type MFI, and subjecting the liquid feed stream to epoxidation reaction conditions in the epoxidation reactor, obtaining a reaction mixture comprising propylene oxide, methanol, water, and the at least one dissolved potassium salt of hydroxyethylidenediphosphonic acid, and optionally propane; removing an effluent stream from the epoxidation reactor, the effluent stream comprising propylene oxide, methanol, water, at least a portion of the at least one potassium salt of hydroxyethylidenediphosphonic acid, and optionally propane.

A catalyst composition comprising (a) a manganese-containing compound and (b) a carboxylic acid functionalized metal organic framework (MOF) compound; and a process for preparing an olefin oxide compound product including reacting (a) at least one olefin compound with (b) at least one oxidant in the presence of (c) the above catalyst composition.

Disclosed herein is a simple process for functionalization/grafting of carbon microspheres obtained from bagasse with various active functional groups onto it and use of the same as catalyst for various organic reactions, having very high selectivity and conversion rate.

The present disclosure relates to a method for effecting catalytic selective oxidation in liquid phase comprising a perfluorinated solvent and an olefinic compound with molecular oxygen to produce an epoxide. The method may provide enhanced selectivity to the epoxide of greater than 60%. The olefinic compound may be ethylene, propylene, butenes, 1-octene, butadiene, allyl chloride, allyl alcohol, styrene, and the like. The perfluorinated solvent may be perfluoro methyldecalin, perfluorodecalin, perfluoroperhydrophenanthrene, perfluoro (butyltetrahydrofuran), isomers thereof, or a combination thereof. In some embodiments, the method includes catalytically epoxidizing, in a liquid phase comprising a perfluorinated solvent, propylene with molecular oxygen to produce propylene oxide. A system for carrying out the method is also provided, the system comprising a source of a perfluorinated solvent, and a liquid phase reactor fluidly connected with the source, and configured for effecting catalytic selective oxidation, in a liquid phase comprising the perfluorinated solvent, of an olefinic compound with molecular oxygen to produce an epoxide.

Disclosed herein is a simple process for functionalization/grafting of carbon microspheres obtained from bagasse with various active functional groups onto it and use of the same as catalyst for various organic reactions, having very high selectivity and conversion rate.

This invention relates to molecular catalysts and chemical reactions utilizing the same, and particularly to molecular catalysts for efficient catalytic oxidation of hydrocarbons, such as hydrocarbons from natural gas. The molecular catalytic platform provided herein is capable of the facile oxidation of hydrocarbons, for example, under ambient conditions such as near room temperature and atmospheric pressure.

A compound with formula (V) ##STR00001##
the synthesis method for compound (V), and its use for the preparation of 1,4,7-triazacyclononane (tacn) and N- and/or C-functionalized derivatives thereof, particularly compounds with formula (I) ##STR00002##
Also, metallic complexes comprising a ligand with formula (I) and a metal and their use for imaging.

The present invention embodiments relate to a compound with formula (V) ##STR00001## The invention also relates in certain embodiments to the synthesis method for compound (V) and its use for the preparation of 1,4,7-triazacyclononane (tacn) and N- and/or C-functionalized derivatives thereof, particularly compounds with formula (I) ##STR00002## The invention also relates in certain embodiments to metallic complexes comprising a ligand with formula (I) and a metal and their use for imaging.

Methods and compositions of catalysts for sulfoxidation reaction processes are disclosed. The sulfoxidation reaction process can be performed in an aqueous medium, and the catalysts can be recycled for further use. In some embodiments, a method of making a catalyst may include contacting a transition metal compound with an oxidizing agent to form a first solution, contacting a carboxylic acid compound with a cationic surfactant to form a second solution, mixing the first solution and the second solution to form a precipitate, and isolating the precipitate.

A catalyst composition comprising (a) a manganese-containing compound and (b) a carboxylic acid functionalized metal organic framework (MOF) compound; and a process for preparing an olefin oxide compound product including reacting (a) at least one olefin compound with (b) at least one oxidant in the presence of (c) the above catalyst composition.