This book is a brief summary of my conducted research, which had lasted for several years in the field of polymer chemistry. It aims at preparing polymer materials containing the element of nitrogen, its treatment and activating them to be used as adsorbents for carbon dioxide, which has increased in recent years due to environmental pollution causing global warming. Despite the fact that there are several books published in this field, this book, however, is characterized by its distinct contents that aid the readers to grasp the notion of gases adsorption by chemical adsorbents which feature surface areas in a simple way. Finally, I would like to express my sincere gratitude to LAP LAMBERT Academic Publishing for printing this book provided with a wonderful cover, which makes it attractive and interesting.