Selective Bio-butadiene production by 1,3 butanediol dehydration

MARIA EUGENIA SAD; ANDREA RODRIGUEZ; CRISTINA PADRÓ

CHICAGO

Congreso; 26 North American Catalysis Meeting; 2019

North american catalysis society

Introduction1,3-butadiene (BD) is an important industrial intermediate used for syntheticrubber, elastomers and polymeric resins manufacture [1]. BD is mainly obtained (95% ofworld production) as a by-product of steam cracking of naphtha and gas oil for ethylene andpropylene production. However, in recent years due to the increase in the exploitation ofunconventional gas (shale gas) and the decrease in the exploitation of oil, the production ofethylene by naphtha cracking has decreased and consequently also the of butadiene from nonrenewableresources. Therefore, it is highly desirable to find an alternative route starting fromrenewable raw materials. An alternative is to obtain BD from bioethanol (Lebedev). Thisreaction occurs at high temperatures (> 673K) on MgO/SiO2 catalysts in the presence ofpromoters (Zn, Zr, Cu) [2].Recently, it has been demonstrated that the isomers of butanediol (BDOL) (1,2-,1,3-, 1,4- and 2,3-BDOL) can be obtained in high yields by fermentation of glucose, sucrose,glycerol and mixtures of glucose and xylose [3] becoming an attractive raw material as analternative to bioethanol for bio-BD synthesis process. In particular, the dehydration of1,3BDOL to produce BD using solid acid catalysts has been recently studied [4] and it hasbeen suggested that the formation of BD may be feasible if a suitable catalyst is chosen thatselectively favors dehydration reactions