Hans Tropsch was a German chemist born in 1889, known for his significant contributions to the field of synthetic fuels. He is best recognized for developing the Tropsch process, a method that converts carbon monoxide and hydrogen into liquid hydrocarbons, which can be used as synthetic gasoline or diesel. This process became particularly important during times when natural oil supplies were limited. Tropsch's work gained prominence during World War II, as it provided a way for countries to produce fuel from coal or natural gas. His innovations laid the groundwork for modern Fischer-Tropsch synthesis, which is still used today in various industries to create cleaner fuels and chemicals from alternative sources.