Currently, biomass transformation to produce high value-added chemicals and liquid biofuels is attracting more and more interest by the virtue of its importance in the sustainable development of human society. Herein, we reported the conversion of furfural (FFA) into cyclopentanone (CPO) in water over high performing and stable Cu/ZrO₂ catalysts prepared by our developed one-pot reduction-oxidation method. It was demonstrated that surface structures and catalytic performances of catalysts could be delicately adjusted by varying the calcination temperatures for catalyst precursors. Especially, an appropriate calcination temperature of 500 °C could significantly enhance the interactions between surface Cu species and the ZrO₂ support, thus greatly facilitating the formation of Cu⁺-O-Zr-like structure at the metal-support interface, and the resulting Cu/ZrO₂ catalyst showed a superior catalytic performance with a high CPO yield of 91.3% under mild reaction conditions (i.e. a low hydrogen pressure of 1.5 MPa and 150 °C) to other metal oxides supported copper catalysts prepared by the conventional impregnation. It was revealed that in addition to surface acidic sites, surface Cu⁺/(Cu°+Cu⁺) ratio also played a key role in promoting the formation of CPO in the present Cu/ZrO₂ catalytic system.

当前，由于生物质转化在人类社会的可持续发展中的重要性，生物质转化以生产高附加值的化学品和液体生物燃料正引起越来越多的兴趣。本文中，我们报道了通过我们开发的一锅还原氧化法制备的高性能，稳定的Cu / ZrO ₂催化剂在水中将糠醛（FFA）转化为环戊酮（CPO）。已经证明，可以通过改变催化剂前体的煅烧温度来精细地调节催化剂的表面结构和催化性能。特别是，适当的煅烧温度为500°C可以显着增强表面Cu物种与ZrO ₂载体之间的相互作用，从而极大地促进了Cu的形成。金属-载体界面上的⁺ -O-Zr样结构，以及所得的Cu / ZrO ₂催化剂显示出优异的催化性能，在温和的反应条件下（即1.5 MPa的低氢气压和150℃），以常规浸渍法制备的其他金属氧化物负载的铜催化剂。结果表明，在当前的Cu / ZrO ₂催化体系中，除表面酸性部位外，表面Cu ⁺ /（Cu°+ Cu ⁺）比在促进CPO形成中也起着关键作用。