Herein, the effect of in-situ Ti modification on the physicochemical properties of the TixY zeolites and the corresponding NiW supported TixY-A catalysts, as well as on the catalytic performances for aromatic N-heterocyclic compounds hydrodenitrogenation (HDN) was investigated. The existing forms of Ti atoms in the Y zeolites and the active metal states of the corresponding catalysts were investigated by XRD, ICP-OES, SEM, FTIR, UV–Vis DRS, CP-MAS NMR, N₂ physical adsorption–desorption, Py-FTIR, H₂-TPR, HRTEM, XPS and DFT calculation. The results show that the Ti atoms can be effectively introduced into the Y zeolite framework by the in-situ hydrothermal crystallization method. With the increase of TiO₂/Al₂O₃ molar ratio in the Y zeolite, the amount of Brønsted acid sites of the zeolite tended to decrease constantly, but the reducibility of the catalyst and the stacking layer number as well as the sulfidation degree of the NiWS active phase continued to be enhanced. The highest quinoline and indole conversions of 86.5 % and 46.9 % at 320 °C, 4.0 MPa, 300 H₂/oil (v/v), and 10 h⁻¹ LHSV, as well as the highest TOFs of 2.24 h⁻¹ and 1.04 h⁻¹, the highest k_HDN values of 12.4 × 10⁻⁴ mol·g⁻¹·h⁻¹ and 3.6 × 10⁻⁴ mol·g⁻¹·h⁻¹, and the highest denitrogenated product selectivities of 46.1 % and 66.2 % under quinoline and indole conversions of about 15 % and 50 % respectively have been achieved in catalyst NiW/Ti0.1Y-A due to the perfect matching of its hydrogenation and hydrogenolysis performance, which was mainly derived from the remarkable synergistic effect between the Brønsted acid sites of the Y zeolite and the NiWS active phase of the catalyst.

在此，研究了原位Ti改性对TixY沸石和相应的NiW负载的TixY-A催化剂的物理化学性质以及对芳香N-杂环化合物加氢脱氮(HDN)催化性能的影响。_{通过XRD、ICP-OES、SEM、FTIR、UV-Vis DRS、CP-MAS NMR、N 2}物理吸附-脱附、Py等手段研究了Y沸石中Ti原子的存在形态以及相应催化剂的活性金属态。-FTIR、H ₂ -TPR、HRTEM、XPS 和 DFT 计算。结果表明，原位水热结晶方法可以有效地将Ti原子引入到Y沸石骨架中。_{随着Y型沸石中TiO 2} /Al ₂ O ₃摩尔比的增加，沸石的布朗斯台德酸位数量不断减少，但催化剂的还原性、堆积层数以及硫化度均呈下降趋势。NiWS活跃期持续增强。_{在 320 °C、4.0 MPa、300 H 2} /油 (v/v) 和 10 h ⁻¹ LHSV下，喹啉和吲哚的最高转化率分别为 86.5 % 和 46.9 % ，以及最高的TOF 2.24 h ⁻¹和1.04 h ^{-1 ，} k _HDN值最高为12.4 × 10 ^-4  mol·g ^-1 ·h ^-1和3.6 × 10 ^-4  mol·g ^-1 ·h ^-1，脱氮产物选择性最高为46.1催化剂NiW/Ti0.1Y-A由于其加氢和氢解性能的完美匹配，在喹啉和吲哚转化率分别约为15%和50%的情况下实现了15%和66.2%，这主要源于显着的协同效应Y 沸石的 Brønsted 酸位和催化剂的 NiWS 活性相之间。