The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 04, 2012
Filed:
Oct. 31, 2010
Tao Zhang, Dalian, CN;
Mingyuan Zheng, Dalian, CN;
Aiqin Wang, Dalian, CN;
NA Ji, Dalian, CN;
Jifeng Pang, Dalian, CN;
Zhijun Tai, Dalian, CN;
Likun Zhou, Dalian, CN;
Jingguang Chen, Dalian, CN;
Xiaodong Wang, Dalian, CN;
Tao Zhang, Dalian, CN;
Mingyuan Zheng, Dalian, CN;
Aiqin Wang, Dalian, CN;
Na Ji, Dalian, CN;
Jifeng Pang, Dalian, CN;
Zhijun Tai, Dalian, CN;
Likun Zhou, Dalian, CN;
Jingguang Chen, Dalian, CN;
Xiaodong Wang, Dalian, CN;
Abstract
A method for producing ethylene glycol, including (a) adding a polyhydroxy compound and water to a sealed high-pressure reactor, (b) removing air and introducing hydrogen, and (c) allowing the polyhydroxy compound to react in the presence of a catalyst while stiffing. The catalyst includes a first active ingredient and a second active ingredient. The first active ingredient includes a transition metal of Group 8, 9, or 10 selected from iron, cobalt, nickel, ruthenium, rhodium, palladium, iridium, and platinum, and/or a mixture thereof. The second active ingredient includes a metallic state of molybdenum and/or tungsten, or a carbide, nitride, or phosphide thereof. The method is carried out at a hydrogen pressure of 1-12 MPa, at a temperature of 120-300° C. for not less than 5 min in a one-step catalytic reaction. The efficiency, selectivity, and the yield of ethylene glycol are high. The preparation process is simple and the materials used are renewable.