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:
Apr. 08, 2014
Filed:
Jun. 29, 2012
Tao Zhang, Dalian, CN;
NA Ji, Dalian, CN;
Mingyuan Zheng, Dalian, CN;
Aiqin Wang, Dalian, CN;
Yuying Shu, Dalian, CN;
Xiaodong Wang, Dalian, CN;
Jingguang Chen, Dalian, CN;
Tao Zhang, Dalian, CN;
Na Ji, Dalian, CN;
Mingyuan Zheng, Dalian, CN;
Aiqin Wang, Dalian, CN;
Yuying Shu, Dalian, CN;
Xiaodong Wang, Dalian, CN;
Jingguang Chen, Dalian, CN;
Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, Liaoning, CN;
Abstract
Tungsten carbide catalysts are used in preparation of ethylene glycol by hydrogenating degradation of cellulose. The catalyst includes tungsten carbide as main catalytic active component, added with small amount of one or more transition metals such as nickel, cobalt, iron, ruthenium, rhodium, palladium, osmium, iridium, platinum, and copper as the second metal, supported on one or more porous complex supports such as active carbon, alumina, silica, titanium dioxide, silicon carbide, zirconium oxide, for conversion of cellulose to ethylene glycol. The catalyst realizes high efficiency, high selectivity, and high yield in the conversion of cellulose to ethylene glycol at the temperature of 120-300° C., hydrogen pressure of 1-10 MPa, and hydrothermal conditions. Compared to the existing industrial synthetic method of ethylene glycol using ethylene as feedstock, the invention has the advantages of using renewable raw material resources, environment friendly process, and excellent atom economy.