**4. Conclusions**

La0.9K0.1Co0.65Ga0.35O3 with a perovskite structure was prepared by using the citrate complexation method. Due to all the components being derived from the perovskite structure, after reduction Co is firmly confined to the K-modified La-Ga-O composite oxides, resulting in excellent anti-sintering performance. The addition of K can modulate the composition of La-Ga-O, forming more La2O3, favoring the improvement of anti-carbon deposition performance. In addition, the addition of K also increases the dispersion of cobalt, which can generate a greater Co-Ga interface. What is more important is that the doping of K can provide more electron donors for metallic Co, which enhances the selectivity to higher alcohols. Therefore, the catalysts show excellent catalytic activity, high selectivity to higher alcohol, and outstanding stability for the HAS.

**Author Contributions:** Formal analysis, S.G.; Investigation, S.G., T.H. and Z.Z.; Project administration, G.L. and Y.L.; Resources, Y.L.; Supervision, G.L. and Y.L.; Visualization, S.G.; Writing–original draft, S.G.; Writing–review and editing, G.L.

**Funding:** This research was funded by National Natural Science Foundation of China [Nos. 21576192 and 21872101] and The APC was funded by Key Science and Technology Program of Henan Province [Nos. 182102210432].

**Acknowledgments:** The financial support of this work by the National Natural Science Foundation of China (NSFC) (Nos. 21576192 and 21872101), Key Science and Technology Program of Henan Province (Nos. 182102210432) are gratefully acknowledged.

**Conflicts of Interest:** The authors declare no conflict of interest.

## **References**


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