Abstract Alumina supports were synthesized from aluminum hydroxide produced by the hydrolysis of secondary aluminum butoxide in the presence of the triblock copolymer Pluronic P123 (m-AlOOH) and from the commercial AlOOH pseudoboehmite powder (TH-AlOOH), as well as by mixing of m-AlOOH and TH-AlOOH gel in a ratio of 5:95 (m-TH-AlOOH sample). NiW/Al2O3 catalysts were prepared by impregnation of the synthesized supports with H3PW12O40 heteropolyacid and nickel citrate. Physicochemical properties of the supports and catalysts were investigated by low-temperature nitrogen adsorption, X-ray diffraction, NH3 thermo-programmed desorption, X-ray photoelectron spectroscopy, and high-resolution transmission electron microscopy. Catalytic properties were tested in hydrotreatment of straight-run gas oil and vacuum gasoil on a flow unit. The resulting hybrid support had a non-additively higher average pore radius (75 A) and surface area (307 m2/g) than a conventional alumina support and hence preferred morphology of NiWS active phase (3.8 nm against 6.6 nm with the same stacking number) and an increase in the W sulfidation degree (68% against 54%) and Ni content in NiWS phase (44% against 26%). Therefore, the catalyst on the hybrid support exhibits higher activity in hydrodesulfurization, hydrodenitrogenation and hydrogenation of petroleum feeds, and a lower degree of deactivation and coke formation.

中文翻译：

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介孔结构氧化铝对 NiWS/Al2O3 催化剂活性相形态的影响及其在 SRGO 和 VGO 加氢处理中的活性

摘要 氧化铝载体由丁醇仲铝在三嵌段共聚物 Pluronic P123 (m-AlOOH) 存在下水解产生的氢氧化铝和商业 AlOOH 假勃姆石粉末 (TH-AlOOH) 以及 m -AlOOH 和 TH-AlOOH 凝胶的比例为 5:95（m-TH-AlOOH 样品）。NiW/Al2O3 催化剂是通过用 H3PW12O40 杂多酸和柠檬酸镍浸渍合成的载体来制备的。通过低温氮吸附、X 射线衍射、NH3 热程序解吸、X 射线光电子能谱和高分辨率透射电子显微镜研究了载体和催化剂的物理化学性质。在流动装置上对直馏瓦斯油和减压瓦斯油的加氢处理中测试了催化性能。与传统氧化铝载体相比，所得混合载体的平均孔半径 (75 A) 和表面积 (307 m2/g) 非加成更高，因此具有优选的 NiWS 活性相形态（3.8 nm 对 6.6 nm，具有相同的堆积数） ) 和提高 W 硫化度（68% 对 54%）和 NiWS 相中的 Ni 含量（44% 对 26%）。因此，混合载体上的催化剂在石油原料的加氢脱硫、加氢脱氮和加氢中表现出较高的活性，以及​​较低的失活和焦炭形成程度。6 nm 与相同的堆叠数）和增加 W 硫化度（68% 对 54%）和 NiWS 相中的 Ni 含量（44% 对 26%）。因此，混合载体上的催化剂在石油原料的加氢脱硫、加氢脱氮和加氢中表现出较高的活性，以及​​较低的失活和焦炭形成程度。6 nm 与相同的堆叠数）和增加 W 硫化度（68% 对 54%）和 NiWS 相中的 Ni 含量（44% 对 26%）。因此，混合载体上的催化剂在石油原料的加氢脱硫、加氢脱氮和加氢中表现出较高的活性，以及​​较低的失活和焦炭形成程度。