Preface: 4th International Conference on Chemistry, Chemical Process and Engineering.

The 4th International Conference on Chemistry, Chemical Process and Engineering was successfully held in Yogyakarta, Indonesia on September 27th, 2022. The conference aimed to disseminate research results and promote synergy between research and industry. Topics covered included materials, electrochemistry, catalysis, renewable energy, environmental chemistry, organic synthesis, reaction engineering, computational modeling, chemical education, and society. Keynote and invited speakers from various countries delivered interesting talks. The proceedings of the conference are available for further exploration. [Extracted from the article]