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发明公开
CN106582830A 乙二醛空气氧化合成乙醛酸的催化剂Au‑Pd/PDDA‑GO及其制备方法 无效 - 撤回

乙二醛空气氧化合成乙醛酸的催化剂Au‑Pd/PDDA‑GO及其制备方法
摘要：
本发明属于化工催化剂技术领域，具体为一种乙二醛空气氧化合成乙醛酸的催化剂Au‑Pd/PDDA‑GO及其制备方法。本发明的催化剂由Au、Pd、PDDA）、GO组成，其中，GO作为载体，带正电荷的PDDA分子通过静电作用吸附到表面带负电荷的GO上，然后将Au、Pd 的前驱体静电组装到PDDA上，使金属Au、Pd高度分散于GO表面，经过乙二醇还原后得到Au‑Pd/PDDA‑GO催化剂；Au和Pd的总质量为GO和PDDA总质量的5‑10%，Au与Pd的原子比为1:5‑5:1。本发明的Au‑Pd/PDDA‑GO催化剂在乙二醛液相空气氧化合成乙醛酸反应中表现出很好的活性。
摘要（英）：

The invention belongs to the technical field of chemical engineering catalysts, and particularly relates to a catalyst Au-Pd/PDDA-GO for glyoxal air oxidation synthesis of glyoxylic acid and a preparation method of the catalyst Au-Pd/PDDA-GO. The catalyst is composed of Au, Pd, PDDA and GO, wherein GO serves as a carrier, PDDA molecules carrying positive charges are adsorbed to GO with the surface carrying negative charges under the electrostatic interaction, then Au and Pd precursors are electrostatically assembled on PDDA to make metal Au and Pd highly dispersed on the surface of GO, and after ethylene glycol reduction, the catalyst Au-Pd/PDDA-GO is obtained; the total mass of Au and Pd is 5-10% that of GO and PDDA, and the atomic ratio of Au to Pd is 1:5-5:1. The catalyst Au-Pd/PDDA-GO shows excellent activity in the reaction of glyoxal liquid-phase air oxidation synthesis of glyoxylic acid.

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