Lg Chem, Ltd

Young Hyun Choe

Hyun Jong Shin

Byung Yul Choi

Duk Ki Kim

Yeon Shick Yoo

Kwang Ho Park

Ju Yeon Park

Joo Yeon Park

Young Jin Cho

Hyo Sang You

Hyun Sub Lim

Jun Seok Ko

Won Ho Lee

Jung Hwa Kang

Min Ho Kil

Junghoon Chang

Sang Hun Jeon

Yeon Park Ju

The present invention relates to a method for preparing a catalyst and a method for preparing unsaturated carboxylic acid using the catalyst prepared according to the preparation method. According to the method for preparing a catalyst, unsaturated carboxylic acid can be provided from an unsaturated aldehyde with a high conversion rate and selectivity.

Method for preparing catalyst

The present invention relates to a method for producing unsaturated aldehydes and unsaturated carboxylic acids. According to the present invention, a method for producing unsaturated aldehydes and unsaturated carboxylic acids which can impart activity and control temperature independently in fixed catalyst layer zones in a shell-and-tube reactor, thereby exhibiting improved yield and operation stability, is provided.

Method for producing unsaturated aldehyde and unsaturated carboxylic acid

The present invention relates to a high-performance polyoxometalate catalyst and a method of preparing the same. More particularly, the present invention provides a high-performance polyoxometalate catalyst, the activity and selectivity of which may be improved by controlling the content of vanadium and the like and which has superior reproducibility and may unsaturated carboxylic acid from unsaturated aldehyde in a high yield for a long time, a method of preparing the same, and the like.

High-performance polyoxometalate catalyst and method of preparing the same

Disclosed are a Mo&#x2014;Bi&#x2014;Nb&#x2014;Te based composite metal oxide; and a process for producing (meth)acrylic acid from at least one reaction material selected from the group consisting of propylene, propane, isobutylene, t-butyl alcohol and methyl-t-butyl ether, wherein the Mo&#x2014;Bi&#x2014;Nb&#x2014;Te based composite metal oxide is used as a catalyst. Also, disclosed is a process for producing (meth)acrylic acid comprising a first step of producing (meth)acrolein as a main product from at least one reaction material selected from the group consisting of propylene, propane, isobutylene, t-butyl alcohol and methyl-t-butyl ether, and a second step of producing (meth)acrylic acid from the (meth)acrolein, wherein yield of (meth)acrylic acid in the product of the first step is 20 mole % or higher.

Complex metal oxide catalyst with high (meth) acrylic acid selectivity

The present invention relates to a method for preparing a catalyst for partial oxidation of propylene, particularly a method for preparing a catalyst for preparing an acrylic acid, using an organic acid such as a citric acid, maleic acid and oxalic acid. The complex oxide catalyst according to the invention, when used in the gas phase catalytic oxidation of propylene, may produce acrolein in high yield.

Method for preparing a catalyst for partial oxidation of propylene

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Daejeon, South Korea

Young Hyun Choe