Two types of mixed oxides of B₂O₃ and Al₂O₃ were prepared. Aluminum borates (AB_x, x represents the B/(B + Al) ratio) were prepared by low-temperature thermal decomposition of aluminum nitrate and H₃BO₃ sustained by the simultaneous oxidation of an organic agent (glycerol), while B₂O₃-Al₂O₃ with B/(B + Al) ratio of 0.3 was obtained by incipient wetness impregnation of H₃BO₃ on a commercial γ-Al₂O₃ support. Tetrahedrally, pentahedrally, and octahedrally coordinated Al³⁺ cations were all present in AB_0.3 with ratios of 10.9/21.3/67.8, while no pentahedrally coordinated Al³⁺ was observed in B₂O₃-Al₂O₃. B₂O₃ was enriched in the surface of AB_0.3. The Ni₂P phase was obtained by temperature-programmed reduction of a phosphate precursor with a P/Ni ratio as low as 1.2 supported over both AB_0.3 (Ni-P(1.2)/AB_0.3) and B₂O₃-Al₂O₃ (Ni-P(1.2)/B₂O₃-Al₂O₃). This suggests that the surface B₂O₃ inhibits the reaction between nickel phosphates and Al₂O₃, and thus facilitates the formation of Ni₂P. The hydrodesulfurization (HDS) of dibenzothiophene (DBT) over the supported Ni₂P catalysts occurred mainly by the direct desulfurization pathway, and Ni-P(1.2)/B₂O₃-Al₂O₃ was much more active than Ni-P(1.2)/AB_0.3. These features make B₂O₃-Al₂O₃ a promising support for Ni₂P catalysts. The HDS of DBT followed a pseudo-first-order kinetics over Ni-P(1.2)/B₂O₃-Al₂O₃, whereas over Ni-P(1.2)/AB_0.3 it can be described by pseudo-zero-order kinetics. The pseudo-zero-order kinetics suggests a strong adsorption of DBT on Ni-P(1.2)/AB_0.3, which could be responsible for its lower activity.

制备了B ₂ O ₃和Al ₂ O _3的两种混合氧化物。硼酸铝（AB _x，x表示B /（B + Al）比）是通过硝酸铝和H ₃ BO ₃的低温热分解而制得的，而硝酸铝和H ₃ BO ₃由有机试剂（甘油）的同时氧化而维持，而B ₂ ø ₃ -Al ₂ ö ₃通过H的初湿含浸法得到B /（B + Al）的0.3比₃ BO ₃在商业的γ-Al ₂ ö ₃支持。四面体，五面体和八面体配位的Al ³⁺阳离子均以10.9 / 21.3 / 67.8的比率存在于AB _0.3中，而在B ₂ O ₃ -Al ₂ O _3中未观察到五面体配位的Al ³⁺。B ₂ O ₃在AB _0.3的表面富集。Ni ₂ P相是通过程序升温还原在AB _0.3（Ni-P（1.2）/ AB _0.3）和B ₂ O ₃ -Al _2上负载的P / Ni比低至1.2的磷酸盐前体而获得的Ø₃（Ni-P（1.2）/ B ₂ O ₃ -Al ₂ O ₃）。这表明表面B ₂ O ₃抑制了磷酸镍和Al ₂ O ₃之间的反应，从而促进了Ni ₂ P的形成。二苯并噻吩（DBT）在负载的Ni ₂ P催化剂上的加氢脱硫（HDS）主要发生通过直接脱硫途径，Ni-P（1.2）/ B ₂ O ₃ -Al ₂ O ₃比Ni-P（1.2）/ AB _0.3具有更高的活性。这些功能使B ₂ O ₃-Al ₂ O ₃是Ni ₂ P催化剂的有前途的载体。DBT的HDS在Ni-P（1.2）/ B ₂ O ₃ -Al ₂ O _3上遵循伪一级动力学，而在Ni-P（1.2）/ AB _0.3上可以通过伪零级描述。秩序动力学。拟零级动力学表明DBT在Ni-P（1.2）/ AB _0.3上的强烈吸附，可能是其较低活性的原因。