Sulfonation is a versatile method for the production of acidic materials, e. g. for applications in catalysis. In this study different sulfonation techniques for the production of acidic ordered mesoporous materials are investigated. SBA-15-like mesoporous organosilanes bearing aromatic moieties are sulfonated in the liquid phase with oleum as well as in the gas phase under significantly milder conditions with sulfur trioxide. Functionalization via liquid phase sulfonation at elevated temperatures proceeds at the expense of partial or complete collapse of the pore system. In contrast, gas phase sulfonation with sulfur trioxide at ambient temperature allows for similar sulfonation yields, while maintaining the textural properties due to the milder reaction conditions. Overall, acid functionalization of mesoporous organosilica using a gas phase sulfonation route is reported for the first time, enabling both high acid capacities and preservation of the pore structure.

磺化是一种用于生产酸性材料的通用方法，例如用于催化中。在这项研究中，研究了用于生产酸性有序介孔材料的不同磺化技术。带有芳香族部分的SBA-15状中孔有机硅烷在液相中用发烟硫酸磺化，在气相中用三氧化硫磺化，温度明显降低。在升高的温度下通过液相磺化进行的官能化以孔系统的部分或完全塌陷为代价。相反，在室温下用三氧化硫进行气相磺化可获得相似的磺化收率，同时由于较温和的反应条件而保持了质构性质。全面的，