作者：Yanlong Qi, Shijun Liu, Long Cui, Quanquan Dai, Jianyun He, Wei Dong and Chenxi Bai
关键字：1
论文来源：期刊
发表时间：2019年
The synthesis of functionalized 1,3–dienes has received increasing attention due to their importance in the practical development of high–performance elastomers. In the present work, furfural and acetone, acting as renewable feedstocks, are first employed to produce a functionalized 1,3–diene containing a furan group (F–Diene). After selective hydrogenation of the C=O group, the aldol adduct (FAH) shows a nearly complete conversion, with an excellent selectivity (as high as 92%) towards F–Diene over the ceria–based catalysts in a fixed bed. BET, TEM, XRD, XPS, Raman, TPD, TPR and TGA were conducted to identify the relationship between the catalytic performance and catalyst structure. A plausible reaction pathway for the dehydration of FAH over ceria–based catalysts was proposed using a radical mechanism, which suggested the importance of the Ce4+–Ce3+ redox cycle for the dehydration of FAH to F–Diene. Furthermore, the ceria–based catalysts exhibited a notable carbon resistance.