Niobium loaded SBA-15 aluminosilicates with different metal loadings (0.5 and 1 wt. %), were mechanochemically synthesized as catalysts for Friedel-Crafts alkylation reactions. The physicochemical properties of these materials were investigated by means of N₂ adsorption/desorption measurements, ICP-MS, DRIFT of Py-adsorption among other characterisation techniques. Niobium-loaded materials as well as their respective support displayed a mesoporous nature and the typical structure of SBA-15 materials. The impact of the incorporation of niobium on the aluminosilicate support on the acidic properties was investigated in the alkylation of toluene using benzyl alcohol and benzyl chloride as alkylating agents. The modification of SBA-15 aluminosilicates with Nb particles incorporated a low number of active sites shown to be highly active in alkylation reactions, reaching quantitative conversion in short reaction times (> 10 min), especially for the alkylation of toluene with benzyl chloride, catalysed by Lewis acid sites. The small increase in Lewis acid sites is going to lead to enhanced catalytic activities.

用机械化学方法合成了具有不同金属负载量（0.5和1 wt。％）的负载铌的SBA-15铝硅酸盐，作为弗瑞德-克拉夫茨烷基化反应的催化剂。利用N ₂研究了这些材料的理化性质。吸附/解吸测量，ICP-MS，Py吸附的DRIFT等表征技术。负载铌的材料及其各自的载体表现出中孔性质和SBA-15材料的典型结构。在使用苄醇和苄基氯作为烷基化剂的甲苯烷基化中，研究了铌在铝硅酸盐载体上的掺入对酸性的影响。用Nb颗粒对SBA-15铝硅酸盐进行的改性结合了少量的活性位点，这些活性位点在烷基化反应中表现出很高的活性，在较短的反应时间（> 10分钟）内即可实现定量转化，尤其是在甲苯与苄基氯的催化下路易斯酸位点。