文献类型：期刊文献

英文题名：NiCu Anchored on a Specific TiO2 Face Tunes Electron Density for Selective Hydrogenation of Fatty Acids into Alkanes or Alcohols

作者：Long, Feng[1,2] Cao, Xincheng[1,2] Jiang, Xia[1,2] Liu, Peng[1,2] Jiang, JianChun[1,2] Zhang, Xiaolei[3] Xu, Junming[1,2,4]

第一作者：Long, Feng

通信作者：Xu, JM[1];Xu, JM[2];Xu, JM[3]

机构：[1]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Key Lab Biomass Energy & Mat, Jiangsu Prov & Natl Engn Lab Biomass Chem Utiliza, Nanjing 210042, Peoples R China;[2]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Key Lab Chem Engn Forest Prod, Natl Forestry & Grassland Adm, Nanjing 210037, Peoples R China;[3]Univ Strathclyde, Dept Chem & Proc Engn, Glasgow G1 1XJ, Lanark, Scotland;[4]Nanjing Forestry Univ, Coinnovat Ctr Efficient Proc & Utilizat Forest Re, Nanjing 210037, Peoples R China

年份：2022

卷号：10

期号：22

起止页码：7349-7361

外文期刊名：ACS SUSTAINABLE CHEMISTRY & ENGINEERING

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000809046600014)】；

基金：This work was supported by the "National Key Research and Development Project" (Grant No. 2019YFB1504005)

语种：英文

外文关键词：hydrogenation; diesel-like alkanes; fatty alcohol; electron density; DFT calculation

摘要：Catalyst design is critical for renewable selective hydrogenation of fatty acids into alkanes or alcohols, especially for active metals and supports. We demonstrate that NiCu anchored on a TiO2 (P25) surface, prepared by the impregnation method, performed superior temperature-sensitive catalytic activities with a higher fatty alcohol yield of 78.2% (205 degrees C, 4 MPa H-2 and 12 h) and alkane yield of 85.0% (245 degrees C, 3 MPa H-2, and 6 h). X-ray photoelectron spectroscopy (XPS) and density functional theory (DFT) suggest that Ni or NiCu anchored on rutile with oxygen vacancies can achieve reversal of charge transfer between the metal and TiO(2 )support. Especially, the normal NiCu cluster loading on the rutile surface can improve the dispersion of the NiCu cluster and oxygen vacancy concentration. Thus, more NiCu clusters anchored on oxygen defects can obtain negative charges in favor of alcohol production. In contrast, the other active NiCu clusters will preferentially cleave the C-C bond to produce alkanes at a higher reaction temperature. Our work provides a new strategy for designing highly effective hydrogenation catalysts.