李闯

个人信息Personal Information

副教授

博士生导师

硕士生导师

性别:男

毕业院校:大连理工大学

学位:博士

所在单位:化工学院

学科:化学工艺

办公地点:化工综合楼A406

联系方式:13591147510

电子邮箱:ChuangLi@dlut.edu.cn

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Hydrodeoxygenation of Lignin-derived Diaryl Ethers to Aromatics and Alkanes Using Nickel on Zr-doped Niobium Phosphate

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论文类型:期刊论文

发表时间:2016-09-16

发表刊物:CHEMISTRYSELECT

收录刊物:SCIE

卷号:1

期号:15

页面范围:4949-4956

ISSN号:2365-6549

关键字:aromatics; green chemistry; hydrodeoxygenation; lignin-derived 4-O-5 dimers; supported catalysts

摘要:4-O-5 diaryl ether owns the strongest aryl-aryl ether bond of the abundant C-aryl-O bonds in lignin. Selective hydrodeoxygenation (HDO) of diaryl ethers to oxygen-free aromatics and alkanes has been achieved over nickel nanoparticles supported on Zr-doped niobium phosphate solid acids in an autoclave under the mild conditions. Py-IR, NH3-TPD and TEM techniques were conducted to investigate the surface acidity and metal particle distribution of as-synthesized catalysts. Nickel on Zr-doped niobium phosphate exhibited an excellent activity for 84% conversion of diaryl ether and a better selectivity of oxygen-free aromatic about 62% and the total HDO selectivity reached up to 92% at 220 degrees C and 0.5 MPa, which is attributed to the favorable synergetic catalytic effect between acid sites and metal sites. In addition, higher reaction temperature favors the production of oxygen-free aromatics and alkanes and low H-2 pressure is benefit for formation of benzene.