Deng Qiao, Jiang Lihong, Yang Yu, Yu Yan
Faculty of Chemical Engineering, Kunming University of Science and Technology No. 727 Jingming South Road China
RSC Adv. 2022 Oct 6;12(44):28560-28571. doi: 10.1039/d2ra05632a. eCollection 2022 Oct 4.
In the choice of catalysts for the hydrogenation of pinene, nickel-based catalysts show intriguing activity. Here, a Ni-B catalyst supported on activated carbon with Ni as an active component was synthesized by the titration reduction co-impregnation method. The mechanism of such heterogeneous systems has not yet been articulated, and the industrial applications of the potassium borohydride reduction of nickel-based catalysts are limited by their easy agglomeration and poor stability. The materials were analyzed by hierarchical and DFT studies, XPS, BET, XRD, and SEM, which provided insights into the kind of signals in Ni reduction to Ni. The hierarchical analysis indicated that Ni/AC (0.4876) and reaction pressure (0.6066) influenced the catalyst preparation and process efficiency changes, respectively. Activated carbon was shown to provide a favorable basis for the stability of the Ni-B activity. In addition, the hierarchical analysis method provides new insights into the data analysis for chemical experiments.
在蒎烯氢化反应的催化剂选择中，镍基催化剂表现出引人注目的活性。在此，采用滴定还原共浸渍法合成了以镍为活性组分、负载于活性炭上的Ni-B催化剂。此类多相体系的机理尚未阐明，硼氢化钾还原镍基催化剂的工业应用受到其易团聚和稳定性差的限制。通过分级和密度泛函理论（DFT）研究、X射线光电子能谱（XPS）、比表面积测定（BET）、X射线衍射（XRD）和扫描电子显微镜（SEM）对材料进行了分析，这些分析为镍还原为镍的信号类型提供了见解。分级分析表明，Ni/AC（0.4876）和反应压力（0.6066）分别影响催化剂的制备和过程效率变化。结果表明，活性炭为Ni-B活性的稳定性提供了有利基础。此外，分级分析方法为化学实验的数据分析提供了新的见解。
