Aqueous-phase partial oxidation of methane over a combination of heterogeneous Fe-ZSM-5 and Pd catalysts was demonstrated in the presence of O₂ and H₂. Fe-ZSM-5 catalyst active for partial oxidation of methane with H₂O₂ was prepared by an ion-exchange method. For comparison, homogeneous Fe species (FeSO₄) were also used as a catalyst for partial oxidation of methane. Several supported Pd catalysts for the direct synthesis of hydrogen peroxide from H₂ and O₂ were prepared using activated carbon (AC), AC treated with sulfuric acid (s-AC), as-synthesized hyper-crosslinked porous polymer (HCPP), HCPP with carboxylic group (c−HCPP), and HCPP with carboxylic and sulfonic groups (c-s−HCPP). Among them, the Pd catalyst supported on c-s−HCPP was effective for generating H₂O₂ in situ, which enabled methane oxidation over Fe-ZSM-5 without any leaching.

在O ₂和H ₂的存在下，证明了在非均相Fe-ZSM-5和Pd催化剂的组合下甲烷的水相部分氧化。通过离子交换法制备了对H ₂ O ₂甲烷部分氧化具有活性的Fe-ZSM-5催化剂。为了进行比较，均相的Fe物种（FeSO ₄）也用作甲烷部分氧化的催化剂。从H ₂和O ₂直接合成过氧化氢的几种负载型Pd催化剂使用活性炭（AC），经硫酸处理的AC（s-AC），合成后的超交联多孔聚合物（HCPP），带有羧基的HCPP（c-HCPP）和带有羧基和磺酸基的HCPP制备（ cs-HCPP）。其中，负载在cs-HCPP上的Pd催化剂可有效地原位生成H ₂ O ₂ ，从而可以在Fe-ZSM-5上进行甲烷氧化而没有任何浸出。