The synergistic effect of Cu<sup>0</sup> and Cu<sup>+</sup> for one-step synthesis of aviation biofuel from biomass-derived ketones
作者:Tan Li、Jing Su、Linjia Yin、Xiangkun Zhang、Cong Wang、Xinbao Li、Jing Zhang、Kaige Wang
DOI:10.1039/d3gc02671j
日期:——
A Cu-based catalyst was developed for one-step solvent-free synthesis of aviation biofuel from biomass-derived ketones, including acetone, cyclopentanone, cyclohexanone, and 2-pentanone. Under the optimal working conditions, the conversion rate of acetone, cyclopentanone, cyclohexanone and 2-pentanone of 100% can be achieved by using Cu/Al2O3. 79.7 c% maximum carbon yield of liquid hydrocarbons with
开发了一种铜基催化剂,用于从生物质衍生的酮(包括丙酮、环戊酮、环己酮和2-戊酮)一步无溶剂合成航空生物燃料。在最佳工况下,采用Cu/Al 2 O 3 ,丙酮、环戊酮、环己酮、2-戊酮的转化率均可达到100% 。在1.0 MPa H 2、280 ℃、2 h -1 WHSV条件下,液态烃最大碳收率为79.7 c%,航空生物燃料选择性为89.5% 。研究了焙烧温度对催化剂酸碱度以及Cu物种价态和分散度的影响。基于DFT计算和原位DRIFTS结果,Cu +上羰基的优先吸附和氢的有效解离增加了催化剂表面上H和原料的局部浓度,加速了Cu 0上占主导地位的速率决定步骤。Cu 0和Cu +的协同作用促进了航空生物燃料的形成。