Disclosed are compositions and methods for preventing or reducing polymer formation and polymer deposition in equipment used in petrochemical processes. An antifoulant composition includes a combination of one or more antioxidants; one or more antipolymerants; one or more dispersants; and one or more solvents. A method of preventing or reducing fouling of process equipment used in an industrial process is also described. The method includes introducing into the process equipment an antifoulant composition, the antifoulant composition comprising a combination of one or more antioxidants; one or more antipolymerants; one or more dispersants; and one or more solvents.

Disclosed are compositions and methods for preventing or reducing polymer formation and polymer deposition in equipment used in petrochemical processes. An antifoulant composition includes a combination of one or more antioxidants; one or more antipolymerants; one or more dispersants; and one or more solvents. A method of preventing or reducing fouling of process equipment used in an industrial process is also described. The method includes introducing into the process equipment an antifoulant composition, the antifoulant composition comprising a combination of one or more antioxidants; one or more antipolymerants; one or more dispersants; and one or more solvents.

The present disclosure describes methods for silylating aromatic organic substrates, and associated chemical systems, said methods comprising or consisting essentially of contacting the aromatic organic substrate with a mixture of (a) at least one organosilane and (b) at least one strong base, under conditions sufficient to silylate the aromatic substrate.

The present disclosure describes methods for silylating aromatic organic substrates, and associated chemical systems, said methods comprising or consisting essentially of contacting the aromatic organic substrate with a mixture of (a) at least one organosilane and (b) at least one strong base, under conditions sufficient to silylate the aromatic substrate.

Provided is a method for producing a deuterated aromatic compound and a deuterated reaction composition. The method includes performing a deuterated reaction of an aromatic compound comprising one or more aromatic rings using a solution comprising the aromatic compound, heavy water, and an organic compound which can be hydrolyzed by the heavy water. The method produces a high-purity deuterated compound under relatively low temperature and pressure conditions.

Provided is a method for producing a deuterated aromatic compound and a deuterated reaction composition. The method includes performing a deuterated reaction of an aromatic compound comprising one or more aromatic rings using a solution comprising the aromatic compound, heavy water, and an organic compound which can be hydrolyzed by the heavy water. The method produces a high-purity deuterated compound under relatively low temperature and pressure conditions.

Provided is an organic electroluminescence device provided with a light absorber represented by Formula 1 below, and a light absorbing layer including the same. In Formula 1, Ar is pyrene, chrysene, or anthracene, and Y is a hydrogen atom or a substituent, and X is represented by any one of Formula 2-1 to 2-3 below. ##STR00001##

Provided is an organic electroluminescence device provided with a light absorber represented by Formula 1 below, and a light absorbing layer including the same. In Formula 1, Ar is pyrene, chrysene, or anthracene, and Y is a hydrogen atom or a substituent, and X is represented by any one of Formula 2-1 to 2-3 below. ##STR00001##

Disclosed herein are methane conversion devices that achieve autothermal conditions and related methods using the methane conversion devices.

Disclosed herein are methane conversion devices that achieve autothermal conditions and related methods using the methane conversion devices.