The adsorbate interactions of furans as probe molecules in H-ZSM-5 and H-USY with and without metal ion modification have been revealed by synchrotron X-ray powder diffraction (SXRD). The Rietveld refinements give both qualitatively and quantitatively the spatial arrangements and adsorption geometries of furan and 2,5-dimethylfuran (DMF) on the Brønsted acid sites (BAS) and metal Lewis acid sites (LAS). The bonding information between the adsorbate-framework can also be correlated with thermogravimetric findings. The use of probe molecule-SXRD can be used as a new characterisation tool which can spatially interrogate the acidity of crystalline porous catalysts, leading to molecular engineering of new catalytic systems.

通过同步加速器X射线粉末衍射（SXRD）揭示了H-ZSM-5和H-USY中具有和不具有金属离子修饰的呋喃作为探针分子的吸附作用。Rietveld改进方案从质和量上给出了布朗斯台德酸位点（BAS）和金属路易斯酸位点（LAS）上呋喃和2,5-二甲基呋喃（DMF）的空间排列和吸附几何形状。被吸附物框架之间的键合信息也可以与热重分析结果相关联。探针分子SXRD的使用可用作一种新的表征工具，可以在空间上询问结晶多孔催化剂的酸度，从而导致新催化系统的分子工程化。