Patent number: 7429682
Abstract: A catalyst for gas phase oxidation of methylbenzenes in the presence of molecular oxygen to produce corresponding aromatic aldehydes, a method for preparing the catalyst, and a method for producing aromatic aldehydes from methylbenzenes by using the catalyst. The catalyst comprises a compound represented by the following formula (1): WaXbYcOx ??(1) wherein W represents a tungsten atom, X represents one or more alkali metals selected from the group consisting of Li, Na, K, Rb, and Cs, Y represents one or more elements selected from the group consisting of Fe, Co, Ni, Cu, Mn, Re, Cr, V, Nb, Ti, Zr, Zn, Cd, Y, La, Ce, B, Al, Sn, Mg, Ca, Sr, and Ba, O stands for an oxygen atom, and the ratio of a:b:c is 12:0.001˜1:0˜5.
Type:
Grant
Filed:
November 22, 2006
Date of Patent:
September 30, 2008
Assignee:
LG Chem, Ltd.
Inventors:
Won Ho Lee, Hyun Kyung Yoon, Dong Il Lee, Jong Hyun Chae, Ji Hyang Son, In Kyu Park, Won Jae Lee
Publication number: 20080021248
Abstract: A catalyst for gas phase oxidation of methylbenzenes in the presence of molecular oxygen to produce corresponding aromatic aldehydes, a method for preparing the catalyst, and a method for producing aromatic aldehydes from methylbenzenes by using the catalyst. The catalyst comprises a compound represented by the following formula (1): WaXbYcOx ??(1) wherein W represents a tungsten atom, X represents one or more alkali metals selected from the group consisting of Li, Na, K, Rb, and Cs, Y represents one or more elements selected from the group consisting of Fe, Co, Ni, Cu, Mn, Re, Cr, V, Nb, Ti, Zr, Zn, Cd, Y, La, Ce, B, Al, Sn, Mg, Ca, Sr, and Ba, O stands for an oxygen atom, and the ratio of a:b:c is 12:0.001˜1:0˜5.
Type:
Application
Filed:
November 22, 2006
Publication date:
January 24, 2008
Inventors:
Won Ho Lee, Hyun Kyung Yoon, Dong Il Lee, Jong Hyun Chae, Ji Hyang Son, In Kyu Park, Won Jae Lee