摘要
综述了近年来Ru基费托催化的研究进展,并展望了其应用前景。Ru基催化剂在成本上高于当前普遍应用的Co、Fe基催化剂,但其在催化活性等方面具有优势。研究表明,Ru基费托催化剂的活性、选择性受到Ru源物质、载体、催化剂助剂等多种因素的影响。其中SiO_2、Al_2O_3、ZrO_2等氧化物以及分子筛、活性炭、碳纳米管等载体能赋予催化剂高机械强度、高比表面积,大幅度增加Ru的利用效率从而提高催化效能。一些碱金属、碱土金属以及过渡金属助剂可与载体共同调变活性相的结构并产生电子效应,有望提高催化剂的活性和对目标烃类产物的选择性。除此以外,通过对Ru来源物质的选择以及整体制备工艺的优化,均可增强Ru基费托催化剂的性能。
This article reviewed the recent progress of ruthenium-based catalysts for Fischer-Tropsch （FT） synthesis, and discussed the prospects of its application. In spite of the highcost, Ru-based catalyst possesses higher catalytic activity than currently widely used Co, Febased catalysts. Studies showed that performance of Ru catalysts is influenced by factors such asRu precursors, catalyst supports, promoters, and so on. Zeolites, activated carbon, carbonnanotube, and oxides such as SiO2, A1203 and ZrO2 could work as supports, giving the catalysthigh mechanical strength, high surface area, and significantly increasing the utilization efficiencyof Ru. Alkali metals, alkaline earth metals and transition metals could be selected as promoters,which modify the catalyst＇s microstructure and provide electronic effects, together with thesupports. In addition, screening of Ru precursors, as well as optimization of the preparationprocess, could enhance the performance of Ru catalysts.
出处
《化工进展》
EI
CAS
CSCD
北大核心
2017年第B11期228-234,共7页
Chemical Industry and Engineering Progress
关键词
费托合成
催化剂
钌
催化剂载体
催化剂助剂
Fischer-Tropsch synthesis
catalyst
ruthenium
catalyst support
catalyst promoter
