King Fahd University of Petroleum and Minerals

S-oil Corporation

Osong Medical Innovation Foundation, Korea University Research and Business Foundation

Sung-Gil Hong

Farrukh Shehzad

Hassam Mazhar

Mamdouh Ahmed Al-Harthi

Mamdouh A Al-harthi

Jungbae Kim

Byoungsoo Lee

A method of making an ethylene-propylene (EP) copolymer includes immobilizing a metallocene catalyst on a layered double hydroxide (LDH) to form a supported metallocene catalyst complex. The method also includes mixing the supported metallocene catalyst complex in a nonpolar solvent to form a first mixture. The method further includes degassing the first mixture and saturating with a gaseous mixture of ethylene and propylene to form a second mixture. The method further includes mixing an aluminoxane catalyst with the second mixture to initiate a polymerization reaction of the ethylene and propylene to form a reaction mixture comprising the EP copolymer and separating the EP copolymer from the reaction mixture.

Method of making an ethylene-propylene copolymer

A method of making a polyolefin nanocomposite including, mixing a zinc-aluminum layered double hydroxide (LDH), and a zirconocene complex in a non-polar solvent to form a first mixture. Prior to the mixing the zirconocene complex is not supported on the zinc-aluminum LDH. The method further includes sonicating the first mixture for at least one hour to form a homogeneous slurry. The method further includes degassing the homogenous slurry and adding at least one olefin gas to form a second mixture. The method further includes adding an aluminoxane catalyst to the second mixture and reacting for at least 10 minutes to form a reaction mixture including the polyolefin nanocomposite. The method further includes separating the polyolefin nanocomposite from the reaction mixture.

Method for making and using a supported zinc aluminum layered double hydroxide catalyst

A method of making a polyolefin including, mixing a layered double hydroxide (LDH), and a zirconocene complex in a non-polar solvent to form a first mixture. The method further includes degassing the first mixture and adding an olefin to form a second mixture. The method further includes adding an aluminoxane cocatalyst to the second mixture and reacting for at least 10 minutes to form a reaction mixture including the polyolefin. The method further includes separating the polyolefin from the reaction mixture. The polyolefin has a melting temperature of 120-130&#xb0; C. The zirconocene complex is supported on the LDH to form a supported catalyst complex in the first mixture.

Method of making a polyolefin

Method of making a polyolefin nanocomposite

A method for manufacturing single enzyme nanoparticles through silica encapsulation according to the present disclosure does not include a surface functionalization process and a polymerization process during the synthesis, and reaction conditions are mild. Thus, the method is appropriate for a large scale production.

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Seoul, South Korea

Sung-Gil Hong