Supported Co₃O₄ nanoparticles on SBA-15 aluminosilicates (Al-SBA-15) with different cobalt loadings (0.5, 1, 5, 10 wt %) were synthesized by ball-milling. The synthesized materials were characterized by different techniques including, N₂ adsorption measurements, XRD, TEM, EDX, ICP-MS, DRIFTs of pyridine among others. The catalysts were studied in the microwave assisted benzyl alcohol oxidation as well as in the akylation of toluene with benzyl chloride. Co₃O₄ catalysts exhibited moderate conversions in the selective oxidation of benzyl alcohol, with a high selectivity towards benzaldehyde. Lewis acidity increases upon the incorporation of cobalt nanoparticles onto the surface of the support which was found to significantly influence the materials in the alkylation of toluene with benzyl chloride. The high active sites accessibility of ball-milling prepared materials leads to high conversions to alkylated derivatives in short periods of time (>99 mol %, 30 min). A direct correlation acidity/activity could not be obtained in the systems, for which nanoparticle sizes and distribution could influence the observed activities.

通过球磨法合成了钴含量不同（0.5、1、5、10、10 wt％）的SBA-15铝硅酸盐（Al-SBA-15）上负载的Co ₃ O ₄纳米颗粒。合成的材料通过不同的技术进行表征，包括N ₂吸附测量，XRD，TEM，EDX，ICP-MS，吡啶的DRIFT。在微波辅助的苄醇氧化以及甲苯与苄基氯的烷基化中研究了催化剂。钴₃ O ₄催化剂在苄醇的选择性氧化中表现出中等的转化率，对苯甲醛具有高选择性。当钴纳米颗粒掺入到载体表面上时，路易斯酸度增加，这发现显着影响甲苯与苄基氯烷基化中的材料。球磨制备的材料的高活性位点可及性导致在短时间内（> 99 mol％，30分钟）的高转化为烷基化衍生物。在系统中无法获得直接相关的酸度/活性，对于该系统而言，纳米颗粒的大小和分布可能会影响所观察到的活性。