An Efficient and Highly Stable Ruthenium‐Based Organic Polymer Catalyst for CO 2 Hydrogenation to Formate
Boyu Zhu, Xinrong Wang, Li Luo, Chenfei Yao, Xingbang HuABSTRACT
CO 2 hydrogenation to formic acid is a high‐atom‐economy and environmentally friendly process. However, the short lifespan of current catalysts necessitates frequent replacement, generating significant solid waste and increasing energy costs, which severely undermines the sustainability and economic viability of the process. In this work, the stability of a Ru‐based organic polymer catalyst (Ru/AP‐POP‐350) was dramatically improved by calcination. A 69% conversion was obtained in the hydrogenation of CO 2 to formate, and stable reactivity was maintained for at least 45 cycles using Ru/AP‐POP‐350. The calcination changed the catalyst's structure and increased the size of the ruthenium metal clusters to achieve a good balance between catalytic reactivity and stability, which provides insights into the synthesis of highly stable catalysts for CO 2 hydrogenation.