The solubility of Pd(NO₃)₂ in water is moderate whereas it is completely soluble in diluted HNO₃ solution. Pd/MIL-101(Cr) and Pd/MIL-101-NH₂(Cr) were synthesized by aqueous solution of Pd(NO₃)₂ and Pd(NO₃)₂ solution in dilute HNO₃ and used for CO oxidation reaction. The catalysts synthesized with Pd(NO₃)₂ solution in dilute HNO₃ showed lower activity. The aqueous solution of Pd(NO₃)₂ was used for synthesis of mono-metal Ni, Pd and bimetallic PdNi nanoparticles with various molar ratios supported on MOF. Pd₇₀Ni₃₀/MIL-101(Cr) catalyst showed higher activity than monometallic counterparts and Pd + Ni physical mixture due to the strong synergistic effect of PdNi nanoparticles, high distribution of PdNi nanoparticles, and lower dissociation and desorption barriers. Comparison of the catalysts synthesized by MIL-101(Cr) and MIL-101-NH₂(Cr) as the supports of metals showed that Pd/MIL-101-NH₂(Cr) outperforms Pd/MIL-101-(Cr) because of the higher electron density of Pd resulting from the electron donor ability of the NH₂ functional group. However, the same activities were observed for Pd₇₀Ni₃₀/MIL-101(Cr) and Pd₇₀Ni₃₀/MIL-101-NH₂(Cr), which is due to a less uniform distribution of Pd nanoparticles in Pd₇₀Ni₃₀/MIL-101-NH₂(Cr) originated from amorphization of MIL-101-NH₂(Cr) structure during the reduction process. In contrast, Pd₇₀Ni₃₀/MIL-101(Cr) revealed the stable structure and activity during reduction and CO oxidation for a long time.

Pd(NO ₃ ) ₂在水中的溶解度适中，而在稀HNO ₃溶液中完全溶解。Pd/MIL-101(Cr)和Pd/MIL-101-NH ₂ (Cr)由Pd(NO ₃ ) ₂和Pd(NO ₃ ) ₂稀HNO ₃水溶液合成，用于CO氧化反应. 用稀HNO _{3 中的}Pd(NO ₃ ) ₂溶液合成的催化剂显示出较低的活性。Pd(NO ₃ ) ₂的水溶液用于合成单金属 Ni、Pd 和双金属 PdNi 纳米粒子，具有不同的摩尔比支持在 MOF 上。Pd ₇₀ Ni ₃₀ /MIL-101(Cr) 催化剂表现出比单金属对应物和 Pd + Ni 物理混合物更高的活性，这是由于 PdNi 纳米粒子的强协同作用、PdNi 纳米粒子的高分布以及较低的解离和解吸势垒。MIL-101(Cr)和MIL-101-NH ₂ (Cr)作为金属载体合成的催化剂的比较表明Pd/MIL-101-NH ₂ (Cr)优于Pd/MIL-101-(Cr)因为 NH ₂官能团的电子供体能力导致 Pd 的电子密度更高。然而，对 Pd 观察到相同的活性₇₀ Ni ₃₀ /MIL-101(Cr) 和 Pd ₇₀ Ni ₃₀ /MIL-101-NH ₂ (Cr)，这是由于 Pd 纳米粒子在 Pd ₇₀ Ni ₃₀ /MIL-101-NH _{2 中的}分布不太均匀（ Cr) 源于还原过程中 MIL-101-NH ₂ (Cr) 结构的非晶化。相比之下，Pd ₇₀ Ni ₃₀ /MIL-101(Cr) 在还原和 CO 氧化过程中长时间显示出稳定的结构和活性。