Preface: special issue dedicated to the "International Conference on Energy Sustainability and Advanced Materials – 2022 (ICESAM-2022)" part of the Energy Summit-2022 UPES, Dehradun, India.

This document is a preface to a special issue of the International Journal of Chemical Reactor Engineering (IJCRE) dedicated to the "International Conference on Energy Sustainability and Advanced Materials - 2022 (ICESAM-2022)" held at UPES, Dehradun, India. The conference brought together renowned academicians and industrialists from around the world to discuss topics related to energy security, sustainability, and advanced materials for energy applications. The special issue includes peer-reviewed manuscripts derived from oral presentations at the conference, covering a wide range of topics in energy and chemical engineering. The document expresses appreciation for the contributions of the speakers, reviewers, and authors, and looks forward to future collaborations with IJCRE. [Extracted from the article]