Chromium

CHAPTER 1 INTRODUCTION 1.1 BACKGROUND The catalytic converter was invented by Eugene Houdry, a French mechanical engineer and skilled in catalytic oil refining who lived in the United States around 1950. The invention of catalytic converter has a major role in controlling harmful emissions. When the paper of smog in Los Angeles was published, Houdry became anxious about the role of smoke stack and automobile exhaust in air pollution and established a company, Oxy-Catalyst. Houdry primary…

Adipic acid is mainly use as monomer in manufacture Nylon 6/6 fiber, plasticizer, grease, polyurethane etc. There are several countries in the world that manufacturing the adipic acid. But there also countries that just is a supplier for this adipic acid to any factory that need adipic acid in their countries. The main countries that produce adipic acid are United State of America and also China. Almost ninety percent of adipic acid manufactured in United State of America is used to produce…