Sk Innovation Co., Ltd.

Sk Energy Co., Ltd.

Sk Lubricants Co., Ltd.

Tae-Jin Kim

Young-Eun Cheon

Seon-Ju Lim

SAng Hyeon Kang

Seung Hoon Oh

Sun Woong Choi

Ji Min Kim

Yong Seung Kim

Myung Ahn Ok

Deuk Soo Park

Dae Hyun Choo

Jong Sok Hahn

Hong Chan Kim

Suk Joon Kim

Tae Woo Woo

Sung-Kwan Kim

Mal-Ou Lee

Chang-Q Lee

Sung-bo Ko

The present invention relates to a method for preparing hierarchical zeolites, including the steps of preparing a first mixture solution including a structure-directing agent, an alumina precursor and a pH controller; preparing a second mixture solution by injecting a silica precursor into the first mixture solution; preparing an aqueous solution including a surfactant; preparing a third mixture solution by injecting the aqueous solution into the second mixture solution; and drying and heat-treating the third mixture solution. According to the present invention, hierarchical zeolites having a uniform morphology can be prepared, and thus hierarchical zeolites having improved activity are provided.

Hierarchical zeolites and preparation method therefor

The present invention provides a method for preparing hierarchical zeolite and hierarchical zeolite prepared thereby. The method includes the steps of: carrying out a reaction of a mixture containing water, a silica precursor, an alumina precursor, a pH adjustment material, at least one structure-inducing material, and at least one surfactant; and carrying out drying and heat treatment. The structure-inducing material and the surfactant have different carbon atoms while the surfactant has more carbon atoms than the structure-inducing material.

Hierarchical EU-2 type zeolite having both micropores and mesopores, and preparation method therefor

Disclosed is a catalytic cracking process for the production of light olefins from a hydrocarbon feedstock using fast fluidization, which is a preferred process for more efficiently increasing the production of light olefin hydrocarbons. According to this invention, a fast fluidization regime is applied to a fluidized bed catalytic cracking process of producing light olefins using zeolite, such that a volume fraction and distribution of the catalyst sufficient to induce the catalytic cracking reaction can be provided, thus effectively enhancing the production of light olefin hydrocarbons, in particular, ethylene and propylene, at high selectivity.

Catalytic cracking process using fast fluidization for the production of light olefins from hydrocarbon feedstock

The present invention relates to an arylphenoxy catalyst system producing an ethylene homopolymer or copolymers of ethylene and &#x3b1;-olefins, and a method of producing an ethylene homopolymer or copolymers of ethylene and &#x3b1;-olefins having a high molecular weight under a high temperature solution polymerization condition using the same. The catalyst system includes a group IV arylphenoxy-based transition metal catalyst and an aluminoxane cocatalyst or a boron compound cocatalyst. In the transition metal catalyst, a cyclopentadiene derivative and arylphenoxide as fixed ligands are located around the group IV transition metal, arylphenoxide is substituted with at least one aryl derivative and is located at the ortho position thereof, and the ligands are not crosslinked to each other. The catalyst includes an environmentally-friendly raw material, synthesis of the catalyst is economical, and thermal stability of the catalyst is excellent. It is useful for producing an ethylene homopolymer or copolymers of ethylene and &#x3b1;-olefins having various physical properties in commercial polymerization processes.

Arylphenoxy catalyst system for producing ethylene homopolymer or copolymers of ethylene and &#x3b1;-olefins

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Daejeon, South Korea

Tae-Jin Kim